37332A 6 2 570 0 102.00 104.07 WG I PCE 2 15 1 S RT PLAG-CPX SPARSELY MICROPHYRIC BASALT; 2 S TEX INTERGRANULAR,HOLOCRYSTALLINE* 3 P AUGITE <1 0.2-0.6EUHEDRAL 4 P % FRESH,CLEAN EXTINCTION; 5 P PLAG <1 0.2-0.6 6 P % FRESH,GOOD FOR PROBE* 7 G OL 1 0.02 8 G % FRESH; 9 G PLAG 0.02 10 G PYX 0.02 11 G MAGN 0.02 12 A CARB VEIN 13 V SMEC,CARB, 14 V CHLOROPH 15 37332A 6 2 920 940 102.00 104.43 FRJ I 37 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR,INTERSERTAL 3 S % NOT STRICTLY VARIOLITIC BUT THERE ARE RADICAL 4 S % SHEAF-SHAPED CRYSTAL GRAINS STRONGLY SUGGESTIVE 5 S % OF INITIAL VARIOLITIC GROWTH FOLLOWED BY SLOWER 6 S % MORE NORMAL CRYSTALLIZATION,PARTICULARLY EVIDENT 7 S % NEAR SOME OF THE PHENOCRYSTS* 8 P PLAG >5 >0.5 9 P % FRESH,APPROX COMP AN80,STRIKINGLY HOMOGENEOUS IN 10 P % COMPOSITION WITH SLIGHTLY MORE SIALIC RIMS(SHARP 11 P % CONTRAST-VERY THIN RIMS INTERGROWN WITH THE 12 P % GROUNDMASS)* 13 G PLAG 14 G % APPROX COMP AN70-75,HAS SMALL ROUND INCLUSIONS OF 15 G % CLAY MINS(ALTERED GLASS?); 16 G GLASS 17 G % INTERSTITIAL GLASS IS TOTALLY ALTERED AND HAS 18 G % SMALL SKELETAL MAGNETITE,DISTRIBUTED THROUGHOUT 19 G % SLIDE IN ALL INTERSTITIAL PARTS AND CONCENTRATED 20 G % ABOUT VESICLES-PARTICULARLY LARGE ONES OR CLUMPS, 21 G % ALSO IN BANDS JOINING THE VESICLES; 22 G SMEC 23 G % SMEC SPHERULITES PARTICULARLY ABUNDANT IN THE SAME 24 G % INTERSTITIAL AND VESICLE AREAS AS GLASS; 25 G PYX 26 G MAGN 27 A SMEC GLASS 28 A % SMEC SPHERULITES PARTICULARLY ABUNDANT IN AREAS 29 A % WHERE GLASS IS CONCENTRATED ABOUT VESICLES; 30 A OTHER GLASS 31 A % INCLUDES MANY FINE-GRAINED MINERALS; 32 A CARB TR GROUNDMASS 33 V SMEC,SILICA 34 V % SMEC NEXT TO WALL-THEN SILICA(?),ARE SOME VESICLES 35 V % AFFECTING COOLING RATE(?)-GLASS IS CONCENTRATED 36 V % ABOUT VESICLES-PARTICULARLY LARGE ONES OR CLUMPS* 37 37332A 6 2 920 940 102.00 104.43 ML I 27 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERGRANULAR,PORPHYRITIC* 3 P PLAG 30 >0.5 4 P % FRESH,VERY ABUNDANT PLAG PHENOCRYSTS,WEAKLY ZONED 5 P % EXCEPT AT OUTERMOST PORTIONS,QUENCH OVERGROWTH, 6 P % SIZE UP TO 1 CM ACROSS* 7 G SMEC 8 G % MESOSTASIS LARGELY REPLACED BY SMEC,ALSO THROUGH 9 G % GROUNDMASS AND PLAG PHENOS,AT LEAST TWO VARIETIES- 10 G % COLORLESS OR YELLOW-BOTH BIREFRINGENT AND PLATY,IN 11 G % VEIN FILLING + INTERSTICES; 12 G OXIDES <5 13 G % INTERSTITIAL SKELETAL OXIDE; 14 G PLAG 15 G PYX 16 G MAGN 17 A SMEC GROUNDMASS GROUNDMASS 18 A % MESOSTASIS LARGELY REPLACED BY SMEC,AT LEAST TWO 19 A % VARIETIES-COLORLESS AND YELLOW-BOTH PLATY; 20 A SILICA GROUNDMASS GROUNDMASS 21 A SMEC VEINS, 22 A INTERSTICES 23 A % IN VEINLETS AND THROUGH PLAG PHENOS,BIREFRINGENT 24 A % AND PLATY* 25 V TO 10 5 26 V % ONE VESICLE IS 25MM* 27 37332A 6 21170 0 102.00 104.67 FRJ I PCE 12D 25 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX SUBOPHITIC,INTERGRANULAR,GLASSY* 3 P PLAG >5 >0.5LATHS 4 P % APPROX COMP AN66* 5 G OL 5 0.01-0.1EQUANT 6 G % OL MICROLITES ARE RELATIVELY EQUANT,2VZ 85; 7 G PLAG 40 0.01-0.1 8 G PYX 40 0.01-0.1ANHEDRAL 9 G % INTERSTITIAL; 10 G GLASS 8 11 G % ALTERED GLASS OCCURS IN SMALL INTERSTITIAL PATCHES 12 G % THROUGHOUT THE SLIDE; 13 G MAGN 2 SKELETAL 14 G % ALL OF THE MAGNETITE IS SKELETAL AND IS CONFINED 15 G % TO THE ALTERED GLASS PATCHES* 16 A SMEC GROUNDMASS 17 A CHLOROPH GROUNDMASS 18 A OTHER GLASS 19 A % ALTERED GLASS OCCURS IN SMALL INTERSTITIAL PATCHES 20 A % THROUGHOUT THE SLIDE; 21 A SMEC VEINS 22 V 0.01 1 SMEC,CARB, 23 V CHLOROPH 24 V % SMEC + CHLOROPH IS 1%-CARB IS ONLY A TRACE* 25 37332A 6 21170 0 102.00 104.67 WG I PCE 12 25 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % SLIGHTLY ALTERED; 3 S TEX INTERGRANULAR,GLASSY* 4 P PLAG >5 5.0-10.0 5 P % FRESH,PHENOS HAVE WAVY EXTINCTION(STRAIN?), 6 P % SLIGHTLY ZONED ON MARGINS,APPROX COMP LABRADORITE; 7 P OL TR 8 P % FRESH* 9 G OL 2-3 0.01-0.1 10 G PLAG 0.1-1.0 11 G PYX 0.1-1.0 12 G % APPROX COMP AUGITE; 13 G MAGN 0.1-1.0 14 G GLASS 15 G % ALTERED* 16 A CHLOROPH TR GROUNDMASS 17 A % YELLOW-GOLD; 18 A SILICA TRVEINS, GROUNDMASS 19 A GROUNDMASS 20 A % MICROCRYSTALLINE SILICA,FOUND IN GROUNDMASS AND 21 A % TINY VEINLETS; 22 A SMEC TRINTERSTITIAL,GLASS 23 A VEINS 24 V 0.1-0.2 1 SMEC,CARB 25 37332A 7 1 80 110 111.50 111.60 FLOW I 10 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG 1-5 <0.5 4 P % FRESH* 5 G PLAG 0.1-1.0 6 G PYX 0.1-1.0 7 G MAGN 8 A SMEC <5 GROUNDMASS 9 V 0.01-1.0 10 SMEC,CARB 10 37332A 7 1 80 110 111.50 111.60 RB I 25 1 S RT PLAGIOCLASE SPARSELY PHYRIC BASALT 2 S % POORLY CRYSTALLIZED GROUNDMASS; 3 S TEX INTERGRANULAR,TRACHYTOID 4 S % INTERGRANULAR GRADING INTO INTERSERTAL,ONLY 5 S % SLIGHTLY TRACHYTOID,VERY SPARSELY PHYRIC* 6 P PLAG <1 7 P % FRESH,ZONED NEAR MARGINS* 8 G PLAG 0.01-1.0 9 G PYX 0.01-1.0 10 G % FIBROUS AND POORLY CRYSTALLIZED; 11 G MAGN 0.01-1.0 12 G % POORLY CRYSTALLIZED; 13 G MICROXLN 14 G % SOME MICROXLN MATERIAL-INDETERMINATE* 15 A SMEC INTERSTICES GROUNDMASS 16 A SILICA INTERSTICES GROUNDMASS 17 A % MICROXLN; 18 A CARB INTERSTICES GROUNDMASS 19 A CHLOROPH INTERSTICES GROUNDMASS 20 V 0.1-0.3 1-2 SMEC,CARB, 21 V CHLOROPH,SILICA 22 V % SMEC NEXT TO WALL-THEN SILICA-THEN CARB(MOSTLY), 23 V % SILICA IS MICROXLN WITH A BROWNISH-BLACK OPAQUE 24 V % MATERIAL,MANY OPEN VESICLES* 25 37332A 7 1 410 430 111.50 111.92 FRJ I PCE 5 27 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX SUBOPHITIC,INTERGRANULAR,GLASSY* 3 P PLAG >5 >0.5 4 P % FRESH,APPROX COMP AN95,THIN OUTER RIMS INTERGROWN 5 P % WITH GROUNDMASS,ZONED; 6 P PYX <1 7 P % FRESH,APPROX COMP AUGITE* 8 G PYX 49 0.1-1.0 9 G PLAG 35 0.1-1.0 10 G % APPROX COMP AN70; 11 G OL 5 12 G MAGN 1 13 G % SKELETAL MAGN OCCURS STRICTLY IN ALTERED 14 G % INTERSTITIAL GLASS PATCHES; 15 G GLASS 10 16 G % ALTERED* 17 A CHLOROPH 5 GLASS 18 A COMBINE 19 A % INCLUDES CALCITE + CARB + SMEC + HEMATITE + 20 A % ANALCIME(?),ANALCIME(?) PRECEDED CALCITE IN VEIN- 21 A % ID QUESTIONABLE-MINERAL SHOWS PRISMATIC GROWTH, 22 A % VEIN CUTS ACROSS VESICLES AND WAS FORMED AFTER 23 A % SMEC LINING OF VESICLES,SEQUENCE OF FORMATION IS 24 A % SMEC-HEMATITE-CALCITE-ANALCIME(?)-MORE CALCITE* 25 V 0.15 3 SMEC,CARB 26 V % SMEC NEXT TO WALL-THEN CARB* 27 37332A 7 1 660 690 111.50 112.18 FRJ I PCE 8 10 1 S RT PLAG PHYRIC BASALT; 2 G MAGN 1 3 G % MAGN IS PRIMARILY SKELETAL ALTHOUGH SOME OF THE 4 G % GRAINS ARE FAIRLY WELL FILLED IN,A FEW HAVE 5 G % STARTED TO ALTER TO HEMATITE* 6 A HEMATITE TR GROUNDMASS 7 A % A FEW SKELETAL MAGN STARTED TO ALTER TO HEMATITE* 8 V TR CARB 9 V % ONE FILLED VESICLE* 10 37332A 7 1 660 690 111.50 112.18 RB I PCE 8 20 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % SLIGHTLY ALTERED; 3 S TEX INTERGRANULAR* 4 P PLAG >5 1.0-12.0EUHEDRAL 5 P % FRESH,PLAG IS UNZONED LABRADORITE-NARROW MARGINAL 6 P % ZONE,MOSTLY EUHEDRAL XTLS* 7 G PLAG 0.1-1.0 8 G PYX 0.1-1.0 9 G % APPROX COMP AUGITE; 10 G MAGN 11 A SMEC TR GROUNDMASS 12 A % YELLOW; 13 A CARB TR GROUNDMASS 14 A OTHER GROUNDMASS 15 A % MICROCRYSTALLINE SILICA(?); 16 A SMEC VEINS 17 A % VERY TINY VEINLETS* 18 V 0.1-1.0 1-2 SILICA 19 V % MOSTLY MICROCRYSTALLINE SILICA W/SOME TRIDYMITE* 20 37332A 7 1 660 690 111.50 112.18 WG I PCE 8 21 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % SLIGHTLY ALTERED; 3 S TEX INTERGRANULAR,GLASSY* 4 P PLAG 20 TO 8.0EUHEDRAL 5 P % EUHEDRAL PLAG PHENOS UNZONED EXCEPT FOR THIN RIM 6 P % (QUENCH?),WELL TWINNED; 7 P PYX 8 P % APPROX COMP AUGITE,FRESH* 9 G GLASS 10 G % ALTERED; 11 G PLAG 12 G PYX 13 G ILMENITE 14 G % POORLY CRYSTALLIZED* 15 A SMEC GLASS 16 A SERICITE PLAG PHENOS 17 A % SLIGHT SERICITE ON PLAG* 18 V <0.3 <1 SMEC,CARB, 19 V SILICA 20 V % MANY OPEN VESICLES* 21 37332A 7 11250 0 111.50 112.75 WG I 15 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,TRACHYTOID,GLASSY* 3 P PLAG <1 TO 0.8 4 P % FRESH* 5 G PYX 0.01-0.1 6 G % SMALL XTLS LOOK LIKE OLIVINE BUT HAVE WAVY 7 G % EXTINCTION AND ARE THEREFORE CPX; 8 G PLAG 0.01-0.1 9 G MAGN 10 G GLASS 11 G % FRESH AND BROWN,OXIDIZED* 12 A CARB VEINS 13 A ZEOLITE VEINS 14 V SMEC,CARB 15 37332A 7 2 70 100 111.50 113.09 WG I 20 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S % GOOD SECTION TO PROBE INTERSTITIAL GLASS,GOOD FOR 3 S % CHEMISTRY; 4 S TEX INTERGRANULAR,TRACHYTOID* 5 P PLAG <1 TO 1.2 6 P % FRESH,ONE CLOT IS 0.5MM,1.2MM ONES ARE 1X1* 7 G GLASS 8 G % FRESH,GOOD SECTION TO PROBE INTERSTITIAL GLASS; 9 G PLAG 0.01-0.1 10 G PYX 11 G % GROUNDMASS PYX HAS WAVY EXTINCTION; 12 G OP.MINS 13 G % INCLUDES MAGN + ILMENITE,POORLY FORMED* 14 A SERICITE PLAG PHENOS 15 A SMEC GROUNDMASS 16 A OTHER GROUNDMASS 17 A % WHITE MICA(?)* 18 V TO 5.0 <1 SMEC,MICA 19 V % WHITE MICA(?)* 20 37332A 7 2 410 440 111.50 113.43 ML I PCE 23 14 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,APHYRIC* 3 G GLASS 4 G % INTERSTITIAL GLASS WITH OXIDES; 5 G OXIDES 6 G % WITH INTERSTITIAL GLASS* 7 A SMEC INTERSTICES 8 A % IN GROUNDMASS PORES* 9 V 5.0-10.0 5 SMEC,GOETHITE 10 V % YELLOW SMEC PARTLY FILLS VESICLES-OCCURS ONLY ON 11 V % ONE SIDE OF SECTION PRESUMABLY ALONG ALTERED ZONE, 12 V % BROWNISH-ORANGE DENSE BUT TRANSLUCENT MINERAL 13 V % FILLS CENTERS OF ZONE VESICLES IN ALTERED ZONE* 14 37332A 7 2 410 440 111.50 113.43 WG I PCE 23 16 1 S RT APHYRIC BASALT 2 S % TWO BANDS OF MATERIAL-THE LIGHT BAND IS RELATIVELY 3 S % FRESH AND THE DARK BAND IS MORE ALTERED WITH LOTS 4 S % OF SMECTITE; 5 S TEX INTERGRANULAR* 6 P PLAG 7 P % THERE IS ONE PLAG XTL OF 0.4MM BUT MOST OF THE 8 P % ROCK IS APHYRIC* 9 G PLAG 0.01-0.1 10 G PYX 0.01-0.1 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN,BOTH POORLY FORMED* 13 A SMEC INTERSTICES GROUNDMASS 14 A % DARK BANDS OF ROCK ARE MORE ALTERED-LOTS OF SMEC* 15 V SMEC,CARB 16 37332A 8 1 90 170 121.00 121.13 FLOW I PCE 2 18 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S % SECTION CROSSED BY A BAND OF ALTERATION,LOCALIZED 3 S % GROUNDMASS SMEC + CHLORPH; 4 S TEX INTERGRANULAR* 5 P PLAG <1 <0.5 6 P % PLAG PHENOS FAINTLY ZONED(NORMALLY),FRESH; 7 P OL TR 8 P % FRESH* 9 G PLAG 0.1-1.0 10 G CPX 0.1-1.0 11 G MAGN 12 A SMEC GROUNDMASS 13 A % SECTION CROSSED BY A BAND OF ALTERATION; 14 A CHLOROPH GROUNDMASS 15 A % SECTION CROSSED BY A BAND OF ALTERATION* 16 V 2.0-3.0 3 SMEC,CHLOROPH 17 V % ONLY TRACE SMEC,BOTH ONLY PARTLY FILLING VESICLES* 18 37332A 8 1 260 310 121.00 121.29 FLOW I PCE 4 17 1 S RT PLAG MODERATELY PHYRIC BASALT 2 S % TWO THICK(3-15MM) AND ONE THIN(1MM) BANDS OF 3 S % ALTERATION(AS IN CORE 8-1 #2) AS EVIDENCED IN THE 4 S % CROSS SECTION BY CHLOROPHAEITE VESICLE FILLING AND 5 S % ALSO INTERSTITIAL REPLACEMENT; 6 S TEX INTERGRANULAR; 7 P PLAG 1-5 <0.5 8 P % FRESH* 9 G PLAG 0.1-1.0 10 G PYX 0.1-1.0 11 G MAGN 12 A CHLOROPH GROUNDMASS 13 A SMECTITE GROUNDMASS 14 V 2 5 SMEC,CARB, 15 V CHLOROPH 16 V % ZEOLITE POSSIBLY A FILLING* 17 37332A 8 1 950 980 121.00 121.97 WG I PCE 11 16 1 S RT APHYRIC BASALT 2 S % SLIGHTLY ALTERED; 3 S TEX INTERGRANULAR,APHANITIC-CRYPTOCRYSTALLINE; 4 P PLAG TR 5 P % MICROPHENOS,FRESH,ONE CLOT IS 0.2MM; 6 P CPX TR 7 P % MICROPHENOS,FRESH* 8 G PLAG 0.01-0.1 9 G PYX 10 G OP.MINS 11 G % INCLUDES MAGN + ILMENITE* 12 A SMEC INTERSTITIAL GROUNDMASS 13 A % YELLOW* 14 V 4.0-10.0 1-2 SMEC,OP.MIN 15 V % OPAQUE MINERAL ON RIM* 16 37332A 8 11250 0 121.00 122.25 WG I PCE 13C 16 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,TRACHYTOID,GLASSY* 3 P PLAG <1 TO 0.3 4 P % MICROPHENOS,FRESH; 5 P CPX <1 TO 0.3 6 P % MICROPHENOS,FRESH* 7 G OL TO 0.03 8 G PLAG TO 0.03 9 G PYX TO 0.03 10 G MAGN 11 G GLASS 12 G % PART OF SLIDE HAS FRESH RESIDUAL GLASS,GOOD FOR 13 G % PROBE,VERY FRESH ROW ON THIS SIDE* 14 V CHLOROPH,SMEC 15 V % CHLOROPH NEXT TO WALL-THEN SMEC* 16 37332A 8 2 60 90 121.00 122.58 WG I PCE 15 16 1 S RT PLAG-CPX-OL SPARSELY PHYRIC BASALT 2 S % ONE GLOMEROPORPHYRITIC CLOT OF OL + AUGITE + PLAG; 3 S TEX INTERGRANULAR,INTERSERTAL* 4 P OL <1 <0.6 5 P % ONE GRAIN(?),FRESH; 6 P CPX <1 <0.6 7 P % FRESH; 8 P PLAG <1 <0.5 9 P % FRESH* 10 G PLAG 0.01-0.1 11 G PYX 0.01-0.1 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN* 14 A SMEC INTERSTITIAL GROUNDMASS 15 V 0.3-0.6 1 SMEC,CARB 16 37332A 8 2 450 0 121.00 122.95 FRJ I PCE 19 19 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL,GLASSY* 3 P PLAG <1 4 P % PLAG OCCURS RARE AND SCATTERED THROUGHOUT,ANGLE OF 5 P % EXTINCTION IS 50 DEGREES,APPROX COMP AN85-90; 6 P CPX <1 7 P % AUGITE OCCURS IN A SMALL GLOMEROPORPHYRITIC CLUMP, 8 P % FRESH, 2VZ 45* 9 G PYX 40 0.01-0.1 10 G GLASS 38 11 G % ALTERED; 12 G PLAG 20 0.01-0.1 13 G MAGN 2 14 G OL TR 15 A SMEC GROUNDMASS 16 V 0.4 6 SMEC,CARB 17 V % VERY FEW VESICLES,SOME WITH CALCITE-SOME WITH 18 V % SMEC,SMEC NEXT TO WALL-THEN CHLOROPH* 19 37332A 8 2 750 0 121.00 123.25 WG I PCE 23 17 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,GLASSY* 3 P PLAG <1 4 P % MICROPHENOS,FRESH; 5 P CPX <1 6 P % MICROPHENOS,FRESH* 7 G GLASS 8 G % SOME FRESH GLASS,OXIDIZED; 9 G OL TR 10 G % REPLACED BY CARBONATE IF PRESENT; 11 G PLAG TO 0.04 12 G PYX TO 0.04 13 G MAGN 14 A SMEC INTERSTITIAL GROUNDMASS 15 A % MINOR SMEC; 16 A CARB GROUNDMASS OLIVINE 17 37332A 8 2 920 0 121.00 123.42 WG I PCE 25 17 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,APHYRIC* 3 P PLAG <1 4 P % MICROPHENOS; 5 P CPX <1 6 P % MICROPHENOS* 7 G OL 8 G % OL IN GROUNDMASS REPLACED BY CARBONATE IN PART; 9 G GLASS 10 G % EXCELLENT GLASS FOR PROBE,ALSO FOUND IN THE 11 G % VESICLES; 12 G PLAG TO 0.03 13 G PYX TO 0.03 14 G MAGN 15 A CARB INTERSTITIAL GROUNDMASS 16 V SMEC,GLASS 17 37332A 8 210901120 121.00 123.61 WG I PCE 27 15 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,APHYRIC; 3 P PLAG <1 4 P % FRESH,MICROPHENOS; 5 P CPX TR 6 P % FRESH,MICROPHENOS* 7 G OL 8 G % ID UNCERTAIN; 9 G PLAG 0.01-0.1 10 G PYX 0.01-0.1 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN* 13 A SMEC INTERSTITIAL GROUNDMASS 14 V SMEC,CARB 15 37332A 8 212901350 121.00 123.82 RB I PCE 30 19 1 S RT APHYRIC BASALT 2 S % FINE-GRAINED MIXTURE OF PLAG + CPX + OP.MINS + 3 S % BROWN GLASS(CHIEFLY DEVITRIFIED AND SOMETIMES 4 S % REPLACED BY SMEC); 5 S TEX INTERGRANULAR,INTERSERTAL,GLASSY,APHYRIC* 6 G PLAG 40 7 G PYX 35 8 G GLASS 20 9 G % ALTERED; 10 G OP.MINS 5 11 G % INCLUDES ILMENITE + MAGN* 12 A SMEC INTERSTITIAL GROUNDMASS 13 A CHLOROPH TRINTERSTITIAL GROUNDMASS 14 A SMEC GLASS 15 V SMEC,CARB,ZEOL, 16 V CHLOROPH 17 V % RIM OF DARK CARB(?) AND FILLING OF CLEAR CARB, 18 V % ZEOLITE IS BROWNISH ISOTROPIC-ANALCITE(?)* 19 37332A 9 1 60 0 130.50 130.56 WG I PCE 1 12 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG 1-5 0.2 4 P CPX <1 0.2 5 G PLAG TO 0.03 6 G PYX TO 0.03 7 G OP.MINS 8 G % INCLUDES ILMENITE + MAGN; 9 G GLASS 10 G % OXIDIZED,SOME GLASS GOOD FOR PROBE* 11 V SMEC,CARB 12 37332A 9 1 410 0 130.50 130.91 WG I PCE 5 14 1 S RT SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG <1 0.2-0.8 4 P % MICROPHENOS,FRESH* 5 G OL 6 G % SMALL AND RARE IN GROUNDMASS; 7 G PLAG TO 0.03 8 G PYX TO 0.03 9 G MAGN 10 G GLASS 11 G % FRESH,GOOD FOR PROBE* 12 V 0 13 V % OBSERVER INDICATES NO VESICLES OR ALTERATION* 14 37332A 9 1 500 0 130.50 131.00 RB I PCE 6 22 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL, 3 S APHANITIC-CRYPTOCRYSTALLINE* 4 P PLAG <1 0.2-0.5 5 P % MICROPHENOS,FRESH* 6 G OL TR 7 G % PROBABLE OL IN GROUNDMASS BUT MOSTLY ALTERED TO 8 G % SMECTITE; 9 G PLAG 10 G PYX 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN; 13 G SMECTITE 14 A SMEC INTERSTITIAL GROUNDMASS,OL 15 A % PROBABLY GROUNDMASS OL MOSTLY ALTERED TO SMEC,SMEC 16 A % IN GROUNDMASS ONLY ALONG ONE SIDE OF SLIDE-SHARP 17 A % BOUNDARY* 18 V 0.5 3-5 SMEC,ZEOLITE 19 V % SMEC NEXT TO WALL-THEN ZEOLITE,SLIDE ALTERED ONLY 20 V % ON ONE SIDE-SHARP BOUNDARY-AND VESICLES ARE FILLED 21 V % ONLY IN ALTERED PART* 22 37332A 9 1 670 0 130.50 131.17 RB I PCE 7 23 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S % ALTERATION ON ONE SIDE AND ALONG NARROW FRACTURES; 3 S TEX INTERGRANULAR,INTERSERTAL, 4 S APHANITIC-CRYPTOCRYSTALLINE* 5 P PLAG <1 0.3-0.5 6 P % FRESH* 7 G OL TR 0.01-0.1 8 G PLAG 0.01-0.1 9 G PYX 0.01-0.1 10 G OP.MINS 11 G % INCLUDES ILMENITE + MAGN; 12 G GLASS 13 G % FRESH AND ALTERED* 14 A SMEC INTERSTITIAL GROUNDMASS 15 A % ALTERATION ON ONE SIDE AND ALONG NARROW FRACTURES; 16 A CARB INTERSTITIAL GROUNDMASS 17 A % ALTERATION ON ONE SIDE AND ALONG NARROW FRACTURES* 18 V 0.5 3-5 SMEC,CARB,ZEOL, 19 V CHLOROPHAEITE 20 V % ID UNCERTAIN FOR ZEOL,CHLOROPH NEXT TO WALL-THEN 21 V % SMEC,IN FRESH AREAS VESICLES HAVE MINOR CALCITE 22 V % AND EITHER ZEOLITE OR SILICA(CRISTOBALITE?)* 23 37332A 9 1 900 0 130.50 131.40 FLOW I PCE 10 11 1 S RT APHYRIC BASALT; 2 S TEX VARIOLITIC,GLASSY* 3 G GLASS 4 G % ALTERED; 5 G PLAG 0.01-1.0 6 G PYX 0.01-1.0 7 A SMEC GLASS 8 A SMEC INTERSTITIAL GROUNDMASS 9 V 1.0-2.0 8 SMEC,CHLOROPH 10 V % SMEC NEXT TO WALL-THEN CHLOROPH* 11 37332A 9 11310 0 130.50 131.81 RB I PCE 16 18 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S % ALTERATION AND VESICLE FILLING ONLY IN HALF OF 3 S % SLIDE WITH SHARP BOUNDARY; 4 S TEX INTERGRANULAR,INTERSERTAL,GLASSY* 5 P PLAG <1 0.2-0.3 6 P % FRESH,NARROW ZONE ON MARGIN; 7 P CPX TR 8 G PLAG 0.01-0.1 9 G PYX 0.01-0.1 10 G OP.MINS 11 G % INCLUDES ILMENITE + MAGN* 12 A SMEC INTERSTITIAL GROUNDMASS 13 A % ALTERATION ONLY IN ONE HALF OF SLIDE WITH SHARP 14 A % BOUNDARY* 15 V 0.7 3-5 SMEC,CARB 16 V % SMEC NEXT TO WALL-THEN CARB,VESICLE FILLING ONLY 17 V % IN HALF OF SLIDE WITH SHARP BOUNDARY* 18 37332A 10CC 560 670 140.00 145.12 FRJ I 22 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,TRACHYTOID,INTERSERTAL 3 S % TRACHYTOID IS CRUDE* 4 P PLAG 1-5 5 P % FRESH; 6 P CPX <1 7 P % FRESH* 8 G GLASS 5 9 G % FRESH; 10 G GLASS 20 11 G % ALTERED; 12 G PLAG 30 13 G PYX 43 14 G MAGN 2 15 A SMEC GROUNDMASS 16 A % MOST SMEC OCCURS IN BANDS-FILLING BOTH VESICLES 17 A % AND INTERSTICES; 18 A SMEC VEIN 19 V SMEC,CARB 20 V % MOST SMEC OCCURS IN BANDS-FILLING BOTH VESICLES 21 V % AND INTERSTICES* 22 37332A 10CC 750 0 140.00 145.25 WG I PCE 4 13 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG 1-5 TO 0.3 4 P % SIZE IS ALSO 1X1; 5 P CPX <1 TO 0.3 6 G PLAG TO 0.05 7 G PYX TO 0.05 8 G MAGN 9 G GLASS 10 G % GOOD RESIDUAL GLASS(SEPARATED IMMEDIATELY?) FOR 11 G % PROBE* 12 A SMEC INTERSTITIAL GROUNDMASS 13 37332A 10CC 780 810 140.00 145.30 FRJ I PCE 5 27 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL,GLASSY* 3 P PLAG 1-5 4 P % FRESH* 5 G PLAG 35 0.01-0.1 6 G % APPROX COMP AN50; 7 G PYX 45 0.01-0.1 8 G % SEVERAL AREAS IN WHICH PYX AND PLAG APPEAR TO 9 G % RADIATE FROM A GRANULAR ILL-DEFINABLE CENTER- 10 G % SUGGESTIVE OF INITIAL VARIOLITIC GROWTH(?); 11 G GLASS 15 12 G % MANY INTERSTITIAL PATCHES OF FINE-GRAINED 13 G % ALTERATION APPEAR TO HAVE BEEN FROM GLASS,SOME OF 14 G % THE PATCHES HAVE SEMI-CIRCULAR STRIATIONS WHICH IS 15 G % STRONGLY SUGGESTIVE OF SPHERULITIC DEVITRIFICATION 16 G % OF GLASS; 17 G MAGN 3 SKELETAL 18 G % HIGHLY SKELETAL AND CONFINED TO INTERSTITIAL 19 G % PATCHES OF FINE-GRAINED ALTERATION* 20 A CHLOROPH GLASS 21 A % ALL CHLOROPH NOW TOTALLY ALTERED TO SMECTITES; 22 A SMEC GLASS,CHLOROPH 23 A CARB TR GROUNDMASS 24 A OTHER GLASS 25 A % FINE-GRAINED REPLACEMENT OF GLASS* 26 V 0.3 5 27 37332A 11 1 530 600 149.50 150.07 FRJ I PCE 1 26 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR,TRACHYTOID 3 S % ONLY FAINTLY TRACHYTOID* 4 P PLAG <1 5 P % APPROX COMP AT LEAST AN65; 6 P OL <1 7 P % FRESH,FOUND ONE HIGHLY RESORBED OL REMNANT* 8 G PYX 50 9 G PLAG 20 10 G MAGN 2 SKELETAL 11 G OL TR 12 A CHLOROPH GROUNDMASS 13 A SMEC LINE VESICLESGROUNDMASS 14 A % AT LEAST THREE GENERATIONS OF SMEC-ONE ORANGE IN 15 A % THIN RINDS ON SOME VESICLES-ONE YELLOW OR GREENISH 16 A % YELLOW IN THICK RINDS OVER THE FIRST OR COMPLETELY 17 A % FILLING THE VESICLES,A THIRD ORANGE ONE APPEARS 18 A % EITHER LATER OR IN THE MIDDLE OF THE FIRST AND 19 A % ALSO FORMS THIN LAYERS* 20 V 0.15 3 SMEC,CARB 21 V % A FEW OF THE VESICLES HAVE A HALF LINING- 22 V % CONSISTENTLY TO THE SAME SIDE-GEOPETAL OF 23 V % VARIOLITIC MATERIAL,AT LEAST THREE GENERATIONS OF 24 V % SMECTITE ALTERATION LINING OR COMPLETELY FILLING 25 V % THE VESICLES* 26 37332A 11 1 800 890 149.50 150.35 FRJ I PCE 4 21 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG 1-5 4 G PYX 55 0.1-1.0 5 G PLAG 35 0.1-1.0 6 G MAGN 2 SKELETAL 7 G % MAGN IS LARGER THAN IN MANY OF THE OTHER ROCKS 8 G % ALTHOUGH STILL CONFINED TO THE GLASS-AND STILL 9 G % SKELETAL; 10 G GLASS 8 11 G % ALTERED* 12 A CHLOROPH GROUNDMASS 13 A SMEC GLASS 14 A CHLOROPH GLASS 15 A SMEC VEINS 16 V 0.4 5 SMEC 17 V % MANY OF THE VESICLES ARE QUITE CLEAR,FILLED OR 18 V % PARTIALLY FILLED VESICLES OCCUR IN ZONES,FILLED 19 V % WITH YELLOW-GREEN SMEC WITH EXCELLENT RADIAL 20 V % STRUCTURE-PSEUDO-UNIAXIAL UNDER CROSSED NICOLS* 21 37332A 11 110801150 149.50 150.62 FRJ I PCE 7 22 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR 3 S % TEX IS A LITTLE FINER-GRAINED THAN USUAL,MANY 4 S % SMALL VARIOLITIC PATCHES BUT OVER ALL TEX APPEARS 5 S % INTERGRANULAR* 6 P PLAG <1 7 P % MICROPHENOS,FRESH; 8 P CPX <1 9 P % MICROPHENOS,FRESH* 10 G PYX 53 0.01-0.1 11 G PLAG 30 0.01-0.1 12 G GLASS 15 13 G % ALTERED; 14 G MAGN 2 15 V 0.2 5 SMEC,CARB 16 V % MOST VESICLES EMPTY OR WITH SMALL BUTTONS OF 17 V % RADIAL FIBROUS CALCITE,FILLED VESICLES WITH SMEC 18 V % OCCUR IN A BAND 1.8MM WIDE CONTINUOUS ACROSS THE 19 V % SLIDE AND IN OTHER DISTRIBUTARY BANDS WHICH ARE 20 V % NARROWER,DISTINCTIVE COLORED BANDS IN THE THIN 21 V % SECTION ONLY VISIBLE MEGASCOPICALLY* 22 37332A 12 1 60 110 159.00 159.09 FRJ I PCE 1 19 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S % VERY FINE-GRAINED ROCK WITH PATCHES THAT ARE 3 S % PRACTICALLY CRYPTOCRYSTALLINE; 4 S TEX VARIOLITIC 5 S % CRUDE,LOOKS LIKE A VARIOLITIC TEX STARTED THEN WAS 6 S % BLOCKED IN BY NORMAL BUT VERY FINE-GRAINED 7 S % CRYSTALLIZATION* 8 P PLAG <1 9 P % FRESH,MICROPHENOS* 10 G PLAG 11 G PYX 12 G GLASS 13 G % ALTERED* 14 A DEVT.GLS GLASS 15 A % FINE-GRAINED DEVITRIFICATION; 16 A CHLOROPH GROUNDMASS 17 V 5 SMEC,CARB 18 V % SMEC NEXT TO WALL-THEN CARB* 19 37332A 12 1 570 0 159.00 159.57 WG I PCE 6 18 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,TRACHYTOID,GLASSY; 3 P PLAG <1 TO 0.2 4 P % FRESH,MICROPHENOS* 5 G PLAG TO 0.04 6 G PYX TO 0.04 7 G OP.MINS 8 G % INCLUDES ILMENITE + MAGN; 9 G GLASS 10 G % ALTERED; 11 G OL 12 G % ID UNCERTAIN,MINERAL WITH HIGH BIREFRINGENCE IS 13 G % PROBABLY NOT OL BASED ON EXTINCTION + SURFACE TEX* 14 A SMEC INTERSTITIAL GROUNDMASS 15 A OTHER GLASS 16 A % OXIDATION-DEVITRIFICATION* 17 V 0.2-0.4 5 SMEC 18 37332A 12 1 890 0 159.00 159.89 FLOW I PCE 10 9 1 S RT APHYRIC BASALT; 2 S TEX SUBOPHITIC,INTERGRANULAR* 3 G PLAG 0.1-1.0 4 G PYX 0.1-1.0 5 G OP.MINS 6 G % INCLUDES ILMENITE + MAGN* 7 A SMEC INTERSTITIAL GROUNDMASS 8 V 0.5 <5 SMEC 9 37332A 12 110701100 159.00 160.09 FLOW I 20 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL* 3 G PLAG 4 G PYX 5 G OP.MINS 6 G % INCLUDES ILMENITE + MAGN,MAGN OCCURS WITH SULFIDE; 7 G SULFIDES 8 G % SULFIDES(WITH SOME EXSOLUTION) OCCUR WITH MAGN AND 9 G % AS SMALL XTLS IN SOME VESICLES* 10 A SMEC GROUNDMASS 11 A CHLOROPH GLASS 12 A % ID UNCERTAIN,NOW TOTALLY ALTERED TO SMEC; 13 A SMEC GLASS 14 A % INTERSERTAL GLASS NOW TOTALLY ALTERED TO 15 A % CHLOROPH(?) FIRST-THEN THAT IS TOTALLY ALTERED TO 16 A % SMECTITE* 17 V 1.0 3 SMEC,CARB,ZEOL, 18 V SULFIDE 19 V % SULFIDE OCCURS AS SMALL XTLS IN SOME VESICLES* 20 37332A 12 2 200 0 159.00 160.70 WG I PCE 12F 17 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG <1 TO 0.3 4 P PLAG <1 TO 0.3 5 P % FRESH* 6 P % FRESH* 7 G OL TO 0.08 8 G % PSEUDOMORPHED BY SERP AND CARB; 9 G PLAG TO 0.08 10 G PYX TO 0.08 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN; 13 G GLASS 14 G % FRESH,DEVITRIFIED* 15 A SMEC INTERSTITIAL GROUNDMASS 16 V 0.4 3 SMEC 17 37332A 12 2 840 0 159.00 161.34 WG I 14 1 S RT PLAG SPARSELY PHYRIC BASALT 2 S TEX SUBOPHITIC,INTERGRANULAR* 3 P PLAG <1 4 P % FRESH,MICROPHENOS* 5 G PLAG TO 0.06 6 G PYX TO 0.06 7 G OP.MINS 8 G % INCLUDES ILMENITE + MAGN; 9 G OL 10 G % ID UNCERTAIN,ONE GRAIN OF IDDINGSITE* 11 A SMEC INTERSTITIAL GROUNDMASS 12 A IDDINGS OL 13 V 0.3 2 SMEC 14 37332A 13 11140 0 168.50 169.64 WG I PCE 1 11 1 S RT APHYRIC BASALT 2 S % FRESH ROCK; 3 S TEX INTERGRANULAR,APHANITIC-CRYPTOCRYSTALLINE* 4 P CPX <1 5 P % FRESH,MICROPHENOS,ONE VERY LARGE XTL* 6 G GLASS 7 G % FRESH ROCK,INTERSTITIAL MATERIAL(PROBABLY 8 G % ORIGINALLY GLASS) IS OXIDIZED* 9 V TO 2.0 5-7 GLASS 10 V % MOST VESICLES ARE <0.3-BUT CAN BE UP TO 2.0MM* 11 37332A 13 11440 0 168.50 169.94 WG I PCE 5 13 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG <1 4 P % FRESH,MICROPHENOS,A FEW SMALL XTLS* 5 G OL 6 G % SOME FRESH; 7 G PLAG TO 0.03 8 G PYX TO 0.03 9 G MAGN 10 A SMEC INTERSTITIAL GROUNDMASS 11 A CHLOROPH INTERSTITIAL GROUNDMASS 12 V TO 0.4 3 SMEC,CARB 13 37332A 14 11020 0 178.00 179.02 WG I PCE 9 12 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 G OL 4 G % SMECTITE ALTERATION; 5 G PLAG TO 0.03 6 G PYX TO 0.03 7 G MAGN 8 A SMEC INTERSTITIAL OLIVINE 9 A % SMEC REPLACES ONLY GROUNDMASS OL* 10 V SMEC,CHLOROPH 11 V % CHLOROPH BEGINNING TO CRYSTALLIZE* 12 37332A 14 11160 0 178.00 179.16 WG I PCE 11 12 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 G OL TO 0.05 4 G % FRESH OLIVINE IN GROUNDMASS; 5 G GLASS 6 G % SOME GOOD GLASS FOR PROBE; 7 G PLAG TO 0.05 8 G PYX TO 0.05 9 G MAGN 10 A SMEC INTERSTITIAL GROUNDMASS 11 V SMEC 12 37332A 14 112201260 178.00 179.24 FLOW I PCE 12 20 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR,INTERSERTAL 3 S % VARIOLITIC IN PLACES-NOT IMPORTANT; 4 P PLAG <1 5 P % FRESH,MICROPHENOS,PHENOS OCCUR IN PROTO- 6 P % "GLOMEROPORPHS" OF PLAG + CPX-NO OL SEEN; 7 P CPX <1 8 P % FRESH,MICROPHENOS-IN PROTOGLOMEROPORPHS WITH PLAG; 9 P OL 0 10 P % NO OL PRESENT* 11 G PLAG 0.01-0.1 12 G PYX 0.01-0.1 13 G OP.MINS 14 G % INCLUDES ILMENITE + MAGN* 15 A SMEC GLASS 16 A SMEC INTERSTITIAL GROUNDMASS 17 V TO 1.0 1 SMEC 18 V % INTERSTITIAL WITH VESICULAR SMEC-IS PROBABLY AN 19 V % ALTERATION PRODUCT OF CHLOROPH* 20 37332A 14 112201300 178.00 179.26 FRJ I PCE 12 25 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL; 3 P PLAG <1 4 P % ALL MICROPHENOS OCCUR IN ONE GLOMEROPORPHYRITIC 5 P % CLUMP,PLAG IS ZONED ON OUTER MARGIN EVEN AGAINST 6 P % PYX XTLS WITHIN THE CLUMP,FRESH; 7 P CPX <1 8 P % ALL MICROPHENOS OCCUR IN ONE GLOMEROPORPHYRITIC 9 P % CLUMP,FRESH* 10 G PLAG 30 11 G GLASS 25 12 G % ALTERED; 13 G MAGN 3 SKELETAL 14 G % CONFINED TO GLASSY AREAS,IT DOES NOT OCCUR IN 15 G % AREAS REPLACED BY SMECTITE-SUGGESTS THAT SMECTITE 16 G % IS REPLACING SOMETHING DIFFERENT FROM THE NORMAL 17 G % GLASS* 18 A SMEC INTERSTITIAL GROUNDMASS 19 A % SMECTITES ARE IN TWO BANDS-ONE REDDISH FROM 20 A % OXIDATION AND ONE YELLOW-GREEN,YELLOW-GREEN BAND 21 A % HAS DARK ALTERED GLASS AND MAGN SO APPEARS LIGHTER 22 A % COLORED OVERALL,SMEC LININGS OF VESICLES ALSO 23 A % RESTRICTED TO THESE ZONES* 24 V 3 SMEC 25 37332A 15CC 1 0 187.50 189.00 WG I PCE 1 OR 4 16 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT; 2 S LABELED 5); 3 S TEX INTERGRANULAR* 4 P PLAG 1-5 0.1-0.5 5 P CPX 1-5 0.1-0.5 6 P OL <1 0.1-0.5 7 G OL TO 0.04 8 G % FRESH; 9 G PLAG TO 0.04 10 G PYX TO 0.04 11 G MAGN 12 G GLASS 13 G % EXCELLENT FRESH LIGHT BROWN GLASS FOR PROBE* 14 A SMEC INTERSTITIAL GROUNDMASS 15 V SMEC 16 37332A 15CC 2 0 187.50 189.00 WG I PCE 1 OR 4 17 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT 2 S % SLIDE IS LABELED 14CM FOR INTERVAL; 3 S (PROBABLY PCE 4); 4 S TEX INTERGRANULAR* 5 P PLAG 1-5 0.2-0.5 6 P % ONE PLAG CLOT IS 1MM; 7 P CPX 1-5 0.2-0.5 8 P OL <1 9 G OL TO 0.03 10 G % CHLOROPH REPLACING GROUNDMASS OL(?),ALSO FRESH OL; 11 G PLAG TO 0.03 12 G PYX TO 0.03 13 G MAGN 14 A SMEC INTERSTITIAL GROUNDMASS 15 A CHLOROPH INTERSTITIAL OLIVINE 16 V SMEC 17 37332A 15CC 630 0 187.50 189.63 WG I PCE 2 12 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,GLASSY,APHANITIC-CRYPTXLN* 3 P PLAG 1-5 0.1-0.5 4 P % AUGITE-PLAG MICROPORPHYRITIC CLOTS; 5 P CPX 1-5 0.1-0.5 6 P % AUGITE-PLAG MICROPORPHYRITIC CLOTS* 7 G GLASS 8 G % ALTERED* 9 A SMEC GLASS 10 A OTHER GLASS 11 A % DEVITRIFIED* 12 37332A 15CC 710 0 187.50 189.71 WG I PCE 3 14 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE* 3 P PLAG 1-5 0.2-0.5 4 P CPX 1-5 0.2-0.5 5 P % MISIDENTIFIED AS OLIVINE IN CORE (OR ELSE THIN 6 P % SECTION IS MISLABELED); 7 P OL <1 8 P % ONE LARGE XTL* 9 G OL 10 G % ID UNCERTAIN,ALL ALTERED,IDDINGS-SMECTITE FORMS IN 11 G % THE GROUNDMASS SUGGESTIVE OF OLIVINE* 12 A SMEC INTERSTITIAL GROUNDMASS 13 V <0.3 5-7 SMEC 14 37332A 16 1 330 360 197.00 197.35 WG I PCE 1 14 1 S RT APHYRIC BASALT 2 S % VERY FRESH ROCK; 3 S TEX INTERGRANULAR; 4 P PLAG <1 0.2-0.3SUBHEDRAL 5 P % ONE PLAG MICROPHENO,FRESH; 6 P CPX <1 TO 0.3SUBHEDRAL 7 P % ONE AUGITE MICROPHENO,FRESH* 8 G PLAG TO 0.02 9 G PYX TO 0.02 10 G OP.MINS 11 G % INCLUDES ILMENITE + MAGN,POORLY FORMED* 12 A CARB TRINTERSTITIAL GROUNDMASS 13 V 0.1-0.2 5 CARB 14 37332A 17 1 430 0 206.50 206.93 WG I PCE 5 15 1 S RT APHYRIC BASALT 2 S % DARK GRAY FINE-GRAINED BASALT WITH BROWN STAINED 3 S % SURFACES; 4 S TEX INTERGRANULAR* 5 P PLAG <1 6 P % ONE MICROPHENO IS 0.4MM* 7 G PLAG TO 0.05 8 G PYX TO 0.05 9 G MAGN 10 A SMEC INTERSTITIAL GROUNDMASS 11 A OTHER GLASS 12 A % DEVITRIFIED* 13 V TO 0.8 3 GLASS 14 V % GLASS FILLING IS RARE* 15 37332A 17 1 720 0 206.50 207.22 RB I PCE 9 17 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL,GLASSY* 3 G PLAG 50 4 G PYX 40 5 G % APPROX COMP AUGITE; 6 G OP.MINS 5 7 G % INCLUDES ILMENITE + MAGN; 8 G GLASS 5 9 G % ALTERED,DEVITRIFIED,BROWN* 10 A SILICA GLASS 11 A % ID UNCERTAIN; 12 A SILICA INTERSTITIAL GROUNDMASS 13 A % ID UNCERTAIN* 14 V 0.5 <1 SILICA,GLASS 15 V % ID FOR SILICA UNCERTAIN,BROWN GLASSY(?) 16 V % MATERIAL WITH ABUNDANT ILMENITE ALSO PRESENT* 17 37332A 19 1 350 400 225.50 225.88 FRJ I PCE 1 21 1 S RT APHYRIC BASALT; 2 S TEX PILOTAXITIC,TRACHYTOID,GLASSY 3 S % TRACHYTOID IS FAINT,TEXTURE IS VARIABLE ACROSS 4 S % THE SLIDE,ONE SIDE IS VERY FINE-GRAINED WITHOUT 5 S % ORIENTED MEMBERS,SHARP HIGHLY IRREGULAR CONTACT 6 S % WITH COARSER-GRAINED MATERIAL* 7 P PLAG <1 TO 0.6 8 P % FRESH,MICROPHENOS* 9 G PYX 63 0.02-0.03 10 G GLASS 20 11 G % ALTERED; 12 G PLAG 15 0.02-0.03 13 G MAGN 2 14 A SMEC GLASS 15 A CHLOROPH GLASS 16 A % ID UNCERTAIN; 17 A SMEC VEIN 18 A % VEIN IS ONLY IN FINER GRAINED MATERIAL* 19 V 0.01 5 SMEC,FE.OXIDE 20 V % SMEC NEXT TO WALL-THEN FE.OXIDE* 21 37332A 19 1 560 0 225.50 226.06 WG I PCE 3 19 1 S RT APHYRIC BASALT 2 S % QUENCHED APHYRIC GLASS,SOME ZONES OF GROUNDMASS 3 S % CRYSTALLIZATION ASSOCIATED WITH VESICLES AT 4 S % INCIPIENT FRACTURES; 5 S TEX APHANITIC-CRYPTOCRYSTALLINE* 6 P PLAG 7 P % A FEW TINY PLAG MICROPHENOS* 8 G GLASS 9 G % DEVITRIFIED* 10 A SMEC GLASS 11 A OTHER GLASS 12 A % DEVITRIFIED; 13 A SMEC VEINS 14 A % ALTERATION ALONG VEINLETS* 15 V CHLOROPH 16 V % CHLOROPH IS DEEP ORANGE,VESICLES AT INCIPIENT 17 V % FRACTURES ASSOCIATED WITH SOME ZONES OF GROUNDMASS 18 V % CRYSTALLIZATION* 19 37332A 19 1 680 0 225.50 226.18 WG I PCE 11 12 1 S RT APHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG <1 TO 0.3 4 P % FRESH,MICROPHENOS* 5 G OL 0.01-0.03 6 G % ID UNCERTAIN,RARE; 7 G PLAG 0.01-0.03 8 G PYX 0.01-0.03 9 G MAGN 10 A SMEC INTERSTITIAL GROUNDMASS 11 V SMEC,CARB 12 37332A 19 1 870 0 225.50 226.37 WG I PCE 6 14 1 S RT APHYRIC BASALT; 2 S TEX INTERSERTAL* 3 P PLAG <1 TO 0.2 4 P % FRESH,MICROPHENOS* 5 G OL TO 0.02 6 G % OL IN GROUNDMASS IS DOUBTFUL; 7 G PLAG TO 0.02 8 G PYX TO 0.02 9 G MAGN 10 A SILICA TR GLASS 11 V SMEC,CARB, 12 V SILICA 13 V % SMEC NEXT TO WALL-THEN SILICA-THEN CARB IN CENTER* 14 37332A 20 2 910 0 235.00 237.41 WG I PCE 5 9 1 S RT APHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE 3 S % SOME ZONES OF CRYSTALLINE GROUNDMASS RELATED TO 4 S % VESICLES AND FRACTURES* 5 V TR 6 V % OBSERVER SAYS NOTHING ABOUT VESICLES EXCEPT THAT 7 V % SOME ZONES OF CRYSTALLINE GROUNDMASS RELATED TO 8 V % VESICLES AND FRACTURES* 9 37332A 20 21120 0 235.00 237.62 WG I PCE 7 12 1 S RT APHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE 3 S % SOME ZONES OF MORE COARSELY CRYSTALLIZED 4 S % GROUNDMASS(TO 0.05MM)* 5 P PLAG <1 TO 0.3 6 P % FRESH,MICROPHENOS* 7 G PLAG 0.01 8 G PYX 0.01 9 G MAGN 0.01 10 A SILICA GLASS 11 V SILICA 12 37332A 21 1 570 600 244.50 245.09 WG I PCE 4 15 1 S RT APHYRIC BASALT 2 S % DARK GRAY VERY FINE-GRAINED BASALT; 3 S TEX INTERGRANULAR* 4 P PLAG <1 TO 0.3 5 P % FRESH,MICROPHENOS; 6 P AUGITE <1 TO 0.3 7 P % FRESH,MICROPHENOS* 8 G OL 9 G % ID UNCERTAIN; 10 G PLAG 0.02 11 G PYX 0.02 12 G MAGN 13 A SMEC INTERSTITIAL GROUNDMASS 14 V SMEC,CARB 15 37332A 21 1 590 0 244.50 245.09 WG I PCE 4 15 1 S RT APHYRIC BASALT 2 S % DARK GREY VERY FINE-GRAINED BASALT; 3 S TEX INTERGRANULAR* 4 P PLAG <1 TO 0.3 5 P % FRESH,MICROPHENOS; 6 P CPX <1 TO 0.3 7 P % FRESH,MICROPHENOS* 8 G PLAG 0.03 9 G PYX 0.03 10 G MAGN 11 V SMEC,CARB,ZEOL, 12 V SILICA,FE.OXIDE 13 V % SMEC + SILICA NEXT TO WALL-THEN CARB-THEN SMEC- 14 V % THEN FE.OXIDE,ID OF ZEOLITE UNCERTAIN* 15 37332A 22 1 70 120 254.00 254.10 WG I PCE 1 16 1 S RT APHYRIC BASALT 2 S % DARK GRAY VERY FINE-GRAINED BASALT,BOUNDARY IN 3 S % SLIDE BETWEEN MORE AND LESS ALTERED CORE; 4 S TEX INTERGRANULAR,APANITIC-CRYPTOCRYSTALLINE* 5 P PLAG <1 6 P % FRESH,PYX-PLAG CLOT TO 1.0MM; 7 P CPX <1 8 P % FRESH,PYX-PLAG CLOT TO 1.0MM* 9 G PLAG 0.01-0.1 10 G PYX 0.01-0.1 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN; 13 G GLASS 14 G % ALTERED,OXIDIZED* 15 V SMEC,CARB 16 37332A 22 11360 0 254.00 255.36 WG I PCE 16 17 1 S RT APHYRIC BASALT 2 S % DARK GRAY VERY FINE-GRAINED BASALT; 3 S TEX INTERSERTAL* 4 P PLAG <1 5 P % ONE CLOT* 6 G OL 0.04 7 G PLAG 0.04 8 G PYX 0.04 9 G MAGN 10 A OTHER GLASS 11 A % DEVITRIFIED AND OXIDIZED WITH XTLS OF FE.TI.OX; 12 A FE.TI.OX 13 A % XTLS IN GLASS* 14 V SMEC,CARB, 15 V SILICA,GLASS 16 V % SMEC NEXT TO WALL-THEN SILICA-THEN CARB* 17 37332A 23 1 370 410 263.50 263.89 WG I PCE 5 24 1 S RT APHYRIC BASALT 2 S % DARK GRAY FINE-GRAINED BASALT; 3 S TEX INTERGRANULAR,TRACHYTOID 4 S % CONTACT BETWEEN MORE AND LESS TRACHYTOID 5 S % GROUNDMASS* 6 P PLAG <1 <0.2 7 P % FRESH,MICROPHENOS* 8 G OL 9 G % ID UNCERTAIN-SUGGESTION OF CARB REPLACING RARE 10 G % GROUNDMASS OLIVINE; 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN; 13 G PLAG 0.02 14 G PYX 0.02 15 A CARB GROUNDMASS 16 A % SUGGESTION OF CARB REPLACING RARE GROUNDMASS OL?; 17 A OTHER GLASS 18 A % DEVITRIFICATION AND OXIDATION; 19 A SMEC GLASS 20 V TO 0.4 5 SMEC,SILICA, 21 V CHLOROPH 22 V % SMEC NEXT TO WALL-THEN CHLOROPH,CHLOROPH ONLY IN 23 V % SOME VESICLES,MOST ARE 0.08MM IN SIZE* 24 37332A 23 1 400 0 263.50 263.90 FRJ I PCE 5 27 1 S RT APHYRIC BASALT 2 S % DARK GRAY FINE-GRAINED BASALT,OBSERVER IS 3 S % UNCERTAIN OF THE INTERVAL THIS SECTION IS FROM-IT 4 S % IS PROBABLY MISLABELED; 5 S TEX INTERGRANULAR,INTERSERTAL* 6 P PLAG <1 7 P % FRESH,MICROPHENOS* 8 G PYX 35 0.01-0.1 9 G % PRONOUNCED SECTOR ZONING IN THE PYROXENE; 10 G GLASS 27 11 G % ALTERED; 12 G PLAG 25 0.01-0.1 13 G GLASS 10 14 G % FRESH; 15 G MAGN 3 SKELETAL 16 G SULFIDES 0.5 17 G % OCCUR IN ROUND DROPLETS WITHIN THE BASALTIC GLASS, 18 G % SUSPECT SULFIDE IMMISCIBILITY,DROPLETS ARE TWO 19 G % MICROMETERS AND LESS IN DIAMETER* 20 A CHLOROPH GLASS 21 A % CHLOROPH OCCURS IN DROPLETS TO 30 MICROMETERS AND 22 A % IN INTERSTITIAL PATCHES TO 0.1MM ACROSS,ALL NOW 23 A % ALTERED TO SMEC,DROPLET OCCURRENCE IN BASALTIC 24 A % GLASS IS INDICATION OF IMMISCIBILITY* 25 V SMEC,CARB 26 V % SMEC NEXT TO WALL-THEN CARB-THEN SMEC AGAIN* 27 37332A 25 1 360 0 282.50 282.86 WG I PCE 2 20 1 S RT PLAG-OL-CPX MODERATELY PHYRIC BASALT 2 S % THREE PHENOS,OL COMMON IN GROUNDMASS; 3 S TEX INTERGRANULAR,TRACHYTOID* 4 P PLAG 1-5 0.2-0.8 5 P % SHARP MARGINAL ZONE,FRESH,IN CLOTS 1.5MM ACROSS; 6 P CPX <1 0.2-0.8 7 P % TWINNED,2VZ 45,FRESH,CLOTS 1.5MM ACROSS; 8 P OL <1 0.2-0.8 9 P % FRESH AND ALTERED-SOME SERPENTINE RIMS,IN CLOTS TO 10 P % 1.5MM ACROSS* 11 G OL 1 0.02 12 G PLAG 0.02 13 G PYX 0.02 14 G OP.MINS 15 G % INCLUDES ILMENITE + MAGN* 16 A SMEC INTERSTITIAL OLIVINE 17 V 0.2 5 SMEC,HEMATITE, 18 V CARB 19 V % SMEC NEXT TO WALL-THEN HEMATITE WITH SMEC* 20 37332A 25 1 640 0 282.50 283.14 FRJ I PCE 7 37 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL,GLASSY,SUBOPHITIC 3 S % BARELY SUBOPHITIC* 4 P PLAG <1 5 P % FRESH,IN CLOTS 2.0MM ACROSS,PLAG 6 P % + AUGITE OCCUR TOGETHER IN A GLOMEROCRYST,PLAG 7 P % ALSO OCCURS SEPARATELY; 8 P CPX <1 9 P % FRESH,IN CLOTS 2.0MM ACROSS,2VZ 45,PLAG 10 P % + AUGITE OCCUR TOGETHER IN A GLOMEROCRYST* 11 G PYX 40 0.04 12 G % 2VZ 45; 13 G PLAG 35 0.1-1.0 14 G GLASS 20 15 G % ALTERED; 16 G MAGN 5 17 G % MUCH LARGER AND MORE CLEARLY DEFINED THAN IN MOST 18 G % OF THE OTHER ROCK IN THIN SECTIONS AROUND IT* 19 A SMEC INTERSTITIAL GROUNDMASS 20 A % YELLOW SMECTITES FORM GOOD RIMS WITH RADIAL 21 A % STRUCTURE AND DISORGANIZED IN FILLINGS(IN FORMER 22 A % CAVITIES?),ORANGE SMECTITES ARE MUCH LESS UNIFORM 23 A % IN COLOR BUT APPEAR TO BE COARSER GRAINED AND HAVE 24 A % MORE OF A BOOK-LIKE FORM,REPLACING GLASS(?); 25 A SMEC GLASS 26 A % ID UNCERTAIN; 27 A SMEC VEINS 28 A % SMEC IN VEINS-ORANGE ALONG MARGINS(FORMER GLASS?) 29 A % AND YELLOW IN MIDDLE,LATER IN FILLINGS* 30 V 0.1-0.4 10 SMEC 31 V % PARTS OF THE SLIDE HAVE 40% VESICLES-IS IT 32 V % DIKTYTAXITIC(?) OR PLUCKED GLASS(?),OTHER PARTS 33 V % HAVE 25% SMECTITE-SO SUSPECT APPARENT POROSITY IS 34 V % REAL,SMEC AREAS CORRESPOND TO OXIDIZED APPEARING 35 V % PARTS OF THE ROCK-THESE CAVITIES ARE INTERSTITIAL 36 V % IN SHAPE,THERE ARE ALSO ABOUT 5% ROUND VESICLES* 37 37332A 25 1 900 0 282.50 283.40 WG I PCE 10A 22 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL,TRACHYTOID,GLASSY 3 S % POORLY FORMED INTERGRANULAR TEX* 4 P PLAG <1 TO 0.2 5 P % SMALL INDIVIDUAL XTLS(MICROPHENOS)* 6 G OL 7 G % ALTERED TO SERPENTINE,RARE AREAS WHERE OL FORM IS 8 G % PRESERVED; 9 G GLASS 10 G % FRESH AND ALTERED,LIGHT BROWN,SOME GOOD FOR PROBE; 11 G PLAG 0.01-0.1 12 G PYX 0.01-0.1 13 G OP.MINS 14 G % INCLUDES ILMENITE + MAGN* 15 A SERP GROUNDMASS OL 16 A % ID UNCERTAIN,RARE AREAS WHERE OL FORM PRESERVED; 17 A SMEC GLASS 18 A CARB VEINS 19 V 0.3 3 SMEC,SILICA 20 V % SILICA NEXT TO WALL-THEN SMEC-THEN LIMONITE(?), 21 V % ID FOR LIMONITE UNCERTAIN* 22 37332A 25 112801300 282.50 283.79 WG I PCE 15 14 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P PLAG 1-5 <0.5 4 P % FRESH,ONE PLAG CLOT IS 4.0MM,MOST ARE <0.5MM; 5 P OL <1 <0.5 6 P % FRESH* 7 G OL <0.1 8 G % MOSTLY FRESH,OL COMMON IN GROUNDMASS; 9 G PLAG <0.1 10 G PYX <0.1 11 A SMEC INTERSTITIAL OL 12 A % REPLACING GROUNDMASS OLIVINE ONLY,LOCALIZED* 13 V SMEC,GLASS 14 37332A 26 1 440 470 292.00 292.46 FLOW I 16 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S TEX INTERSERTAL* 3 P PLAG 1-5 4 P % FRESH,APPROX COMP AN55-60* 5 G OL 0.1-1.0 6 G PLAG 0.1-1.0 7 G PYX 0.1-1.0 8 G OP.MINS 9 G % INCLUDES ILMENITE + MAGN* 10 A SMEC GLASS 11 A CHLOROPH GLASS 12 A SMEC INTERSTITIAL GROUNDMASS 13 A CARB INTERSTITIAL GROUNDMASS 14 A CHLOROPH INTERSTITIAL GROUNDMASS 15 V 2.0 3 16 37332A 26 1 780 830 292.00 292.81 FLOW I PCE 7 15 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL* 3 P PLAG 1-5 4 P % FRESH* 5 G PLAG 6 G PYX 7 G OP.MINS 8 G % INCLUDES ILMENITE + MAGN* 9 A SMEC GLASS 10 A % BAND OF CHLOROPH(??)-SMEC-FE.OXIDE/HYDROXIDE 11 A % ALTERATION AFFECTING VESICLES AND GROUNDMASS* 12 V TO 2.0 20 SMEC,CARB 13 V % BAND OF CHLOROPH(??)-SMEC-FE.OXIDE/HYDROXIDE 14 V % ALTERATION AFFECTING VESICLES AND GROUNDMASS* 15 37332A 26 2 90 150 292.00 293.62 FLOW I PCE 2 27 1 S RT PLAG-CPX-OL SPARSELY PHYRIC BASALT 2 S % IGNEOUS(GLASSY) FRAGMENTS INCLUDED BY CHALK 3 S % SEDIMENTS; 4 S TEX GLASSY* 5 P PLAG <1 6 P % "MICROGLOMEROPORPHS" IN GLASS OF PLAG + CPX + OL- 7 P % ALSO ISOLATED PLAG LATHS 1-2MM LONG AND VERY FRESH 8 P % ARE INCLUDED IN GLASS AND ITS ALTERATION PRODUCTS; 9 P CPX <1 10 P % MICROGLOMEROPORPHS IN GLASS OF PLAG + CPX + OL, 11 P % FRESH; 12 P OL <1 TO 0.5 13 P % MICROGLOMEROPORPHS IN GLASS OF PLAG + CPX + OL, 14 P % FRESH,SKELETAL,2VX OF 85* 15 G GLASS 16 G % FRESH AND ALTERED,FRESH GLASS IS DARK-COLORED AND 17 G % ALTERS TO PATCHES OF RARE SMEC(ANISOTROPIC) AND 18 G % POSSIBLY DARKER BROWN FE.OXIDE OR FE.HYDRX PHASES; 19 G OL 20 G % TINY GRAINS IN GLASS* 21 A SMEC GLASS 22 A CARB GLASS 23 A OTHER GLASS 24 A % FE.OXIDE-HYDRXS(?),STIPPLE-LIKE DEVITRIFICATION 25 A % EFFECTS VISIBLE* 26 V <0.5 2 EMPTY 27 37332A 26 2 380 0 292.00 293.88 WG I PCE 5 9 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC,APHANITIC-CRYPTOCRYSTALLINE* 3 P PLAG 1-5 TO 2.0 4 G OL 5 G % ALTERED OL IN GROUNDMASS,REPLACED AND FRESH; 6 G PYX 7 A GROUNDMASS OL 8 V CARB,ZEOLITE 9 37332A 26 21460 0 292.00 294.96 WG I PCE 20 17 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC* 3 P PLAG 1-5 0.2-0.3 4 P % MICROPHENOS,APPROX COMP AT LEAST AN60,BEAUTIFUL 5 P % SKELETAL PLAG; 6 P OL <1 7 P % FRESH,SEVERAL SMALL XTLS* 8 G PLAG 9 G PYX 10 G MAGN 11 G GLASS 12 G % FRESH* 13 A SMEC GLASS 14 A % MINOR* 15 V TO 3.0 3-5 SMEC,CARB,GLASS 16 V % COALESCED* 17 37332A 27 1 350 0 301.50 301.85 WG I PCE 6 15 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S % FRESH ROCK; 3 S TEX INTERGRANULAR,VARIOLITIC* 4 P PLAG 1-5 0.2-0.8 5 P % SOME MICROPHENOS TO 1MM; 6 P OL <1 TO 0.3 7 P % FRESH,MICROPHENOS* 8 G OL 0.01-0.02 9 G % FRESH OL IN GROUNDMASS; 10 G PLAG 0.01-0.02 11 G PYX 0.01-0.02 12 G MAGN 13 A SMEC INTERSTITIAL GROUNDMASS 14 V GLASS 15 37332A 27 1 600 0 301.50 302.10 FLOW I PCE 9 30 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL* 3 P PLAG 1-5 >0.5 4 P % FRESH AND ALTERED; 5 P AUGITE <1 <0.5 6 P % FRESH AND ALTERED,CPX + OL MICROPHENOS SHOW 7 P % STRIKING DISEQUILIBRIUM EFFECTS FROM ALTERATION- 8 P % MAYBE DEUTERIC FO2 + FH2 CHANGES(?); 9 P OL <1 10 P % ALTERED,SIZE RANGE BOTH >0.5MM + <0.5MM,OL + CPX 11 P % MICROPHENOS SHOW STRIKING DISEQUILIBRIUM EFFECTS 12 P % FROM ALTERATION-MAYBE DEUTERIC FO2 + FH2 13 P % CHANGES(?) 14 G OL 0.1-1.0 15 G PLAG 0.1-1.0 16 G PYX 0.1-1.0 17 G OP.MINS 18 G % INCLUDES ILMENITE + MAGN* 19 A SMEC GLASS 20 A % BAND OF SMEC ALTERATION; 21 A OP.MINS GLASS 22 A SMEC GROUNDMASS 23 A FE.OX GROUNDMASS 24 A SMEC OL PHENOS 25 A CARB OL PHENOS 26 A OP.MINS CPX PHENOS 27 V 0.4 5 SMEC,CARB 28 V % BAND OF SMEC ALTERATION AFFECTING GLASS 29 V % REPLACEMENTS + VESICLES* 30 37332A 27 112801310 301.50 302.80 FLOW I PCE 20 18 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT 2 S % ROCK HAS SYMPLECTIC INTERGROWTH OF FE.HYDRX(?)- 3 S % SMEC ALTERATION PRODUCTS; 4 S TEX INTERGRANULAR,INTERSERTAL* 5 P PLAG 1-5 >0.5 6 P % FRESH; 7 P CPX <1 >0.5 8 P % FRESH* 9 G PLAG 0.1-1.0 10 G PYX 0.1-1.0 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN* 13 A SMEC GLASS 14 A % SYMPLECTIC INTERGROWTH OF FE.HYDRX(?)-SMEC 15 A % ALTERATION PRODUCTS; 16 A FE.HYDRX 17 V 0.3 1 SMEC 18 37332A 27 11390 0 301.50 302.89 RB I PCE 21 22 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL 3 S % SLIGHTLY VARIOLITIC; 4 P PLAG 1-5 TO 3.0LATHS 5 P % FRESH,MOST ARE LATHS 0.2-0.5MM LONG* 6 G CPX 7 G % RADIATING SHEAVES OF CPX + INTERSTITIAL GLASS WITH 8 G % NEEDLE-LIKE OPAQUES,2VZ 45; 9 G GLASS 10 G % GLASS GENERALLY FRESH BUT PERHAPS SOME REPLACEMENT 11 G % BY SILICA(?) 12 G OP.MINS 13 G % NEEDLE-LIKE OPAQUES IN INTERSTITIAL GLASS AND 14 G % RADIATING SHEAVES OF CPX* 15 A SMEC TR-2 GLASS 16 A SILICA GLASS 17 A % ID UNCERTAIN,GLASS GENERALLY FRESH BUT PERHAPS 18 A % SOME REPLACEMENT BY SILICA(?)* 19 V 0.1-0.5 CALCITE 20 V % MANY MICROVESICLES IN GLASSY ZONES(0.1MM)-A FEW UP 21 V % TO 0.5MM,LARGER ONES PARTLY FILLED WITH CALCITE* 22 37332A 28 1 150 0 311.00 311.15 FLOW I PCE 2 20 1 S RT OL SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR,INTERSERTAL* 3 P OL <1 >0.5 4 P % SKELETAL OL MICROPHENOS-EITHER CORRODED BY LIQUID 5 P % OR INTRUDED LIQUID DURING XTL GROWTH-PREMATURELY 6 P % ARRESTED REACTION PRODUCTS; 7 P PLAG <1 <0.5 8 P % FRESH* 9 G OL 10 G % MINOR; 11 G PLAG 12 G PYX 13 G OP.MINS 14 G % INCLUDES ILMENITE + MAGN; 15 G GLASS 16 G % FRESH AND SOME ALTERED GLASS* 17 A SMEC OL PHENOS 18 A CARB OL PHENOS 19 V <1.0 1-2 SMEC,CARB 20 37332A 28 1 830 860 311.00 311.85 FLOW I PCE 10 19 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL,GLASSY* 3 P PLAG 1-5 4 P % FRESH,MICROPHENOS; 5 P OL <1 6 P % ALTERED* 7 G OL 0.1-1.0 8 G PLAG 0.1-1.0 9 G PYX 0.1-1.0 10 G ILMENITE 11 G GLASS 12 G % FRESH AND ALTERED* 13 A SMEC GLASS 14 A SMEC INTERSTITIAL GROUNDMASS 15 A CARB OL PHENOS 16 A SMEC OL PHENOS 17 V SMEC,CARB, 18 V OP.MINS 19 37332A 28 1 910 960 311.00 311.93 WG I PCE 11 20 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE 3 S % AREAS OF INCIPIENT VARIOLITIC GROWTH* 4 P PLAG 1-5 0.5-1.0 5 P % FRESH,PATCHY ZONING; 6 P OL <1 0.5-1.0 7 P % SKELETAL WITH INTERGROWN PLAG* 8 G OL 9 G % RARE,FRESH; 10 G PLAG 11 G PYX 12 G % FIBROUS,WELL-CRYSTALLIZED,ABUNDANT; 13 G OP.MINS 14 G % INCLUDES ILMENITE + MAGN* 15 A SMEC INTERSTITIAL GROUNDMASS 16 A CARB INTERSTITIAL GROUNDMASS 17 A CHLOROPH INTERSTITIAL GROUNDMASS 18 V 0.3-0.7 2 SMEC,GLASS 19 V % GLASS IS DEVITRIFIED* 20 37332A 28 11100 0 311.00 312.10 FRJ I PCE 13 31 1 S RT PLAG-OL SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC 3 S % VERY COARSE-GRAINED APHYRIC TEX,PYROXENES APPEAR 4 S % OPHITIC BUT SWEEPING EXTINCTION SUGGESTS 5 S % AGGREGATES RATHER THAN SINGLE XTLS* 6 P PLAG <1 7 P % FRESH,MICROPHENOS; 8 P OL <1 9 P % FRESH,MICROPHENOS* 10 G PYX 45 0.1-1.0 11 G GLASS 25 12 G % ALTERED; 13 G PLAG 20 0.1-1.0 14 G MAGN 2 15 G OL TR 16 G % POSSIBLE TRACE OF OL- JUST A TINY REMNANT OF A 17 G % MINERAL,2 DEGREES RED-2 DEGREES BLUE WITH UNIFORM 18 G % EXTINCTION ALMOST COMPLETELY REPLACED BY SMECTITE, 19 G % MAY HAVE BEEN SEVERAL PERCENT ORIGINALLY* 20 A SMEC GLASS 21 A % THERE ARE MANY SPACES WHERE SEVERAL VARIOLITIC 22 A % AGGREGATES APPROACH EACH OTHER-PLUCKED(?) OR 23 A % DIKTYTAXITIC-MANY ARE NOW FILLED WITH SMEC; 24 A CHLOROPH GLASS 25 V 0.1-0.2 8 SMEC,SILICA, 26 V GLASS,HEMATITE 27 V % EXCELLENT EXAMPLES OF FINE-GRAINED LININGS OF 28 V % VESICLES AND SHOULD GET COMPOSITION WITH PROBE, 29 V % GLASS NEXT TO WALL-THEN SMEC-THEN HEMATITE,ID FOR 30 V % HEMATITE UNCERTAIN-COLOR IS BRIGHT RED* 31 37332A 28 11240 0 311.00 312.24 FLOW I PCE 15 11 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL* 3 P PLAG <1 4 P % FRESH,MICROPHENOS* 5 G PLAG 0.01-0.1 6 G PYX 0.01-0.1 7 G OP.MINS 8 G % INCLUDES ILMENITE + MAGN* 9 A SMEC GLASS 10 V SMEC,FE.HYDRX 11 37332A 28 2 590 620 311.00 313.11 WG I PCE 1 32 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,SUBOPHITIC,VARIOLITIC 3 S % VARIOLITIC IS RARE* 4 P PLAG 1-5 0.2-0.5 5 P % FRESH,MICROPHENOS IN CLOTS; 6 P AUGITE <1 TO 0.15 7 P % XTLS ARE 1X1 IN SIZE* 8 G OL 9 G % ID UNCERTAIN,PROBABLE OL NOW PSEUDOMORPHED BY SMEC 10 G % AND SOMETIMES WITH A RIM OF SERPENTINE(?) DEFINING 11 G % THE OL XTL FORM,RARELY THE REPLACEMENT HAS UNIFORM 12 G % PARALLEL EXTINCTION; 13 G PLAG 0.1 14 G PYX 0.1 15 G OP.MINS 16 G % INCLUDES ILMENITE + MAGN* 17 A SMEC GROUNDMASS, OL 18 A INTERSTITIAL 19 A % POSSIBLE OL NOW PSEUDOMORPHED BY SMEC-SOMETIMES 20 A % WITH A RIM OF SERP(?) DEFINING THE OL XTL FORM, 21 A % RARELY THE REPLACEMENT HAS UNIFORM PARALLEL 22 A % EXTINCTION; 23 A SERP GROUNDMASS OL 24 A % ID UNCERTAIN,SOMETIMES A RIM DEFINES OL XTL FORM; 25 A SILICA INTERSTITIAL GROUNDMASS 26 A IDDINGS INTERSTITIAL GROUNDMASS 27 A HEMATITE INTERSTITIAL GROUNDMASS 28 V TO 0.5 <1 SMEC,SILICA, 29 V GLASS 30 V % LIQUID-GAS VESICLE(?),DEVITRIFIED GLASS NEXT TO 31 V % WALL-THEN SMEC IN CENTER* 32 37332A 29 1 130 0 320.50 320.63 FRJ I PCE 2 22 1 S RT PLAG-CPX-OL SPARSELY PHYRIC BASALT; 2 S TEX VARIOLITIC 3 S % TEX IS HIGHLY VARIABLE ACROSS SLIDE-PILLOW 4 S % MARGIN(?),GRAIN SIZE UNIFORM AT APPROX 0.08MM 5 S % RANGING TO A FEW MICROMETERS* 6 P PLAG <1 7 P % FRESH,MICROPHENOS,ONE SMALL GLOMEROPORPHYRITIC 8 P % PLAG-AUGITE CLOT; 9 P AUGITE <1 10 P % FRESH,MICROPHENOS,ONE SMALL PLAG-AUGITE 11 P % GLOMEROPORPHYRITIC CLOT; 12 P OL <1 13 P % FRESH,MICROPHENOS* 14 G PYX 40 0.01-0.1 15 G PLAG 30 0.01-0.1 16 G GLASS 27 17 G % ALTERED; 18 G MAGN 3 19 V SMEC,GLASS, 20 V HEMATITE 21 V % GLASS NEXT TO WALL-THEN SMEC-THEN HEMATITE* 22 37332A 29 1 130 0 320.50 320.63 WG I PCE 2 14 1 S RT APHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE* 3 G OL 4 G % MICROPHENOS PSEUDOMORPHED BY SMEC + IDDINGS(?); 5 A SMEC GROUNDMASS OL 6 A SMEC OL PHENOS 7 A % OL MICROPHENOS PSEUDOMORPHED BY OXIDIZED SMEC + 8 A % IDDINGS(?); 9 A IDDINGS OL PHENOS 10 A % ID UNCERTAIN,OL MICROPHENOS PSEUDOMORPHED BY 11 A % OXIDIZED SMEC + IDDINGS(?); 12 A CARB VEINS 13 V CARB 14 37332A 29 1 330 360 320.50 320.85 WG I PCE 5 24 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERSERTAL,VARIOLITIC* 3 P PLAG 15-20 0.8-2.0EUHEDRAL-SUBHEDRAL 4 P % FRESH,BROWN GLASS INCLUSIONS OF 0.1-0.2MM,NARROW 5 P % RIM OF SODIC COMP,SOME OTHER ZONING BUT WEAK, 6 P % AT LEAST AN68,USUALLY SINGLE XTLS BUT SOME CLOTS* 7 G GLASS 8 G % FRESH AND ALTERED,BROWN,AS INCLUSIONS IN THE PLAG 9 G % XTLS,GOOD FOR PROBE; 10 G OL 11 G % ALTERED,PSEUDOMORPHED BY SMEC + SERPENTINE(?) + 12 G % CARB* 13 A SMEC INTERSTITIAL,OL 14 A GROUNDMASS 15 A % PSEUDOMORPH OF OL; 16 A CARB INTERSTITIAL,OL 17 A GROUNDMASS 18 A % PSEUDOMORPH OF OL; 19 A SERP INTERSTITIAL,OL 20 A GROUNDMASS 21 A % ID UNCERTAIN,PSEUDOMORPH OF OL* 22 V 0.8 3 SMEC,GLASS 23 V % GLASS IS DEVITRIFIED* 24 37332A 29 1 710 770 320.50 321.24 WG I PCE 10 25 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX SUBOPHITIC* 3 P PLAG 20 TO 3.0 4 P % FRESH; 5 P OL <1 6 P % ALTERED* 7 G OL 0.2-0.3 8 G % GROUNDMASS OL ALTERED TO SMEC-POSSIBLY ABUNDANT, 9 G % ALSO FRESH OL SEEN; 10 G GLASS 11 G % FRESH AND ALTERED,SOME FRESH GLASS FOR PROBE; 12 G PLAG 0.2-0.3 13 G PYX 0.2-0.3 14 G % 2VZ 45; 15 G OP.MINS 16 G % INCLUDES ILMENITE + MAGN* 17 A SILICA INTERSTITIAL GROUNDMASS 18 A SMEC INTERSTITIAL,OL 19 A GROUNDMASS 20 A % GROUNDMASS OL ALTERED TO SMEC-POSSIBLY ABUNDANT; 21 A SILICA OL PHENOS 22 A % ID UNCERTAIN* 23 V SILICA 24 V % ABUNDANT* 25 37332A 29 112401270 320.50 321.76 FLOW I PCE 2A 17 1 S RT PLAG-CPX-OL SPARSELY PHYRIC BASALT; 2 S TEX INTERGRANULAR* 3 P OL <1 4 P % ALTERED,OL + CPX + PLAG "GLOMEROPORPHS"; 5 P PLAG <1 6 P % FRESH,MICROPHENOS,OL + CPX + PLAG "GLOMEROPORPHS"; 7 P CPX <1 8 P % FRESH,MICROPHENOS,OL + CPX + PLAG "GLOMEROPORPHS"* 9 G OL 0.1-1.0 10 G PLAG 0.1-1.0 11 G PYX 0.1-1.0 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN* 14 A SMEC GLASS 15 A CHLOROPH GLASS 16 V 0.5 5 SMEC,CHLOROPH 17 37332A 29 114101440 320.50 321.93 WG I PCE 19 16 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERGRANULAR,SUBOPHITIC* 3 P PLAG 10-15 0.8-2.0 4 P % FRESH,STAINED ALONG CRACKS* 5 G OL 0.05 6 G % COMMON,ALTERED TO SMEC + IDDINGS; 7 G PLAG 0.05 8 G PYX 0.05 9 G OP.MINS 10 G % INCLUDES ILMENITE + MAGN* 11 A SMEC INTERSTITIAL,OL 12 A GROUNDMASS 13 A IDDINGS INTERSTITIAL,OL 14 A GROUNDMASS 15 V TO 0.8 2 GLASS 16 37332A 30 1 680 0 330.00 330.68 WG I PCE 10 20 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % FRESH ROCK,GOOD FOR ANALYSIS; 3 S TEX VARIOLITIC,APHANITIC-CRYPTOCRYSTALLINE* 4 P PLAG 10-15 0.8-1.5 5 P % FRESH; 6 P OL <1 0.8-1.5ANHEDRAL-ROUNDED 7 P % FRESH,ONE LARGE XTL; 8 P AUGITE <1 9 P % ONE SMALL PLAG-PYX CLOT* 10 G OL 0.01 11 G % ABUNDANT AND FRESH; 12 G PLAG 0.01 13 G % LOTS OF SKELETAL GROUNDMASS PLAG; 14 G PYX 0.01 15 G % LOTS OF TUFTED PYX; 16 G MAGN 17 A SMEC INTERSTITIAL GROUNDMASS 18 A SMEC GLASS 19 V SMEC,CARB,GLASS 20 37332A 30 112701300 330.00 331.29 WG I PCE 10 16 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERGRANULAR 3 S % LARGE PLAG* 4 P PLAG 15 TO 4.0 5 P % FRESH,INCLUSIONS OF GLASS IN PLAG-MAY BE 6 P % RESPONSIBLE FOR THE DARK COLOR IN HAND SPECIMEN* 7 G GLASS 8 G % FRESH,BROWN,GOOD GLASS FOR PROBE; 9 G OL >0.05 10 G PLAG >0.05 11 G PYX >0.05 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN* 14 A SMEC INTERSTITIAL GROUNDMASS 15 V TO 0.4 2 SMEC,CARB 16 37332A 30 11340 0 330.00 331.34 WG I PCE 20 12 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERSERTAL* 3 P PLAG 10-15 0.2-0.8 4 P % FRESH* 5 G GLASS 6 G % FRESH AND ALTERED,SOME GLASS GOOD FOR PROBE; 7 G PLAG TO 0.1 8 G PYX TO 0.1 9 A SMEC GLASS 10 A SILICA GLASS 11 V SMEC,SILICA 12 37332A 30 2 110 0 330.00 331.61 WG I PCE 22 14 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % VERY FRESH ROCK; 3 S TEX VARIOLITIC,INTERSERTAL* 4 P PLAG 10-15 0.6-3.0 5 P OL <1 6 P % FRESH,GOOD FOR PROBE,2VZ 88* 7 G GLASS 8 G % FRESH GLASS FOR PROBE; 9 G OL 10 G PLAG 11 G PYX 12 G MAGN 13 V CARB 14 37332A 30 2 610 0 330.00 332.11 WG I PCE 28A 16 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR,INTERSERTAL* 3 P PLAG 20 0.8-3.0 4 P % FRESH* 5 G OL 0.01-0.1 6 G % FRESH; 7 G PLAG 0.01-0.1 8 G % LONG SKELETAL PLAG XTLS; 9 G PYX 0.01-0.1 10 G % FEATHERY BUT EQUANT PYX TUFTS; 11 G OP.MINS 12 G % INCLUDES ILMENITE + MAGN* 13 A SMEC INTERSTITIAL GROUNDMASS 14 A CHLOROPH INTERSTITIAL GROUNDMASS 15 V SMEC,GLASS 16 37332A 30 2 800 0 330.00 332.30 WG I PCE 30 11 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX APHANITIC-CRYPTOCRYSTALLINE* 3 P PLAG 10-15 0.6-1.0 4 G OL 5 G % FRESH OL IN GROUNDMASS-GOOD FOR PROBE; 6 G GLASS 7 G % FRESH* 8 A SMEC INTERSTITIAL GROUNDMASS 9 V SMEC,ZEOLITE 10 V % ID FOR ZEOLITE UNCERTAIN* 11 37332A 30 21000 0 330.00 332.50 FLOW I PCE 33 19 1 S RT PLAGIOCLASE-CPX PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERGRANULAR* 3 P PLAG >5 >0.5 4 P % FRESH AND ALTERED,LARGE GLASSY INCLUSIONS,CORES OF 5 P % SOME LARGE PLAG PHENOS SAUSSURITIZED-SOME PLAG 6 P % PHENOS ARE QUASI-GLOMEROPORPHYRITIC; 7 P AUGITE <1 8 P % ALTERED* 9 G PLAG 0.1-1.0 10 G PYX 0.1-1.0 11 G MAGN 12 A SMEC GLASS 13 A OP.MINS GLASS 14 A SILICA INTERSTITIAL GROUNDMASS 15 A SERICITE PLAG PHENOS 16 A % ID UNCERTAIN* 17 V 0.5 SMEC,SILICA, 18 V ZEOLITE 19 37332A 31 1 230 0 339.50 339.73 WG I PCE 3 15 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERSERTAL,VARIOLITIC* 3 P PLAG 15 0.8-1.2 4 P % FRESH,GLASS INCLUSIONS IN PLAG,WITH EXSOLUTION(?)* 5 G OL 0.05 6 G % REPLACED BY SMECTITE; 7 G PLAG 0.05 8 G PYX 0.05 9 G MAGN 10 G GLASS 11 G % ZONES,OXIDIZED,PROBABLY GOOD FOR PROBE* 12 A SMEC INTERSTITIAL,OL 13 A GROUNDMASS 14 V SMEC,CARB 15 37332A 31 1 700 0 339.50 340.20 FLOW I PCE 10 22 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX VARIOLITIC* 3 P PLAG >5 4 P % FRESH* 5 G GLASS 0.1-1.0 6 G % ALTERED; 7 G OL 0.1-1.0 8 G PLAG 0.1-1.0 9 G PYX 0.1-1.0 10 G OP.MINS 11 G % INCLUDES ILMENITE + MAGN* 12 A SMEC GLASS 13 A CHLOROPH GLASS 14 A SMEC INTERSTITIAL GROUNDMASS 15 A ZEOL INTERSTITIAL GROUNDMASS 16 A % LAUMONTITE; 17 A CARB PLAG,OL PHENOS 18 A CARB VEINS 19 A OTHER VEINS 20 A % SEDIMENT(CALCAREOUS)* 21 V <1.0 3-5 CARB,CHLOROPH 22 37332A 31 11370 0 339.50 340.87 WG I PCE 20 21 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERGRANULAR,VARIOLITIC* 3 P PLAG 10 1.0-1.5 4 P % FRESH,GLASS INCLUSIONS COMMON IN THE CORE OF PLAG 5 P % PHENOS; 6 P OL <1 7 P % FRESH AND ALTERED IN PART,ONE PHENO-STRAINED(?)* 8 G OL 0.04 9 G % ABUNDANT,MOSTLY FRESH; 10 G PLAG 0.04 11 G PYX 0.04 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN* 14 A SMEC INTERSTITIAL,OL,GLASS 15 A GROUNDMASS 16 A CLAY.MIN INTERSTITIAL,OL 17 A GROUNDMASS 18 A % BROWN CLAY AFTER OLIVINE* 19 V TO 1.0 2 SMEC,CARB,GLASS 20 V % MOST ARE 0.4MM* 21 37332A 31 2 320 350 339.50 341.34 RB I PCE 4 22 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S TEX INTERGRANULAR,INTERSERTAL* 3 P PLAG 5 >0.5 4 P % FRESH,UNZONED EXCEPT FOR NARROW RIM,SOME 5 P % GLOMEROPORPHYRITIC CLUSTERS* 6 G PLAG 50 0.1-1.0 7 G PYX 40 0.1-1.0 8 G % APPROX COMP AUGITE,2VZ 45; 9 G OL 5 10 G % GROUNDMASS OL IN 0.1MM XTLS ALMOST COMPLETELY 11 G % REPLACED BY SMEC + CARB; 12 G OP.MINS 5 13 G % INCLUDES ILMENITE + MAGN* 14 A SMEC TRINTERSTITIAL,OL 15 A GROUNDMASS 16 A CARB TRINTERSTITIAL,OL 17 A GROUNDMASS 18 V 0.5-2.0 5 SMEC,CARB,GLASS 19 V % SMEC NEXT TO WALL-THEN CARB,GLASSY ZONE AROUND RIM 20 V % OF VESICLE-A FEW GLASSY VESICLE-LIKE MASSES IN THE 21 V % GROUNDMASS* 22 37332A 31 2 810 0 339.50 341.81 WG I PCE 11 17 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX INTERSERTAL,SUBOPHITIC* 3 P PLAG 5-10 TO 1.5 4 P % FRESH* 5 G GLASS 6 G % ALTERED,OXIDIZED; 7 G OL 0.2 8 G % ID UNCERTAIN-ALTERED; 9 G PYX 0.2 10 G % PYX HAS VERY WAVY EXTINCTION; 11 G PLAG 0.2 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN* 14 A CARB VEINS 15 V TO 1.5 3 SMEC,CARB,GLASS 16 V % GLASS IS WITH XTLS AND DEVITRIFIED* 17 37332A 31 2 990 0 339.50 341.99 WG I PCE 13 21 1 S RT PLAG MODERATELY PHYRIC BASALT 2 S % SECTION SOMEWHAT TOO THICK; 3 S TEX INTERGRANULAR,INTERSERTAL* 4 P PLAG 1-5 0.4-1.0 5 P % FRESH AND ALTERED-SOME CLAY-SERICITE* 6 G OL 0.08 7 G % RARE AND ENTIRELY ALTERED IF PRESENT; 8 G PLAG 0.08 9 G PYX 0.08 10 G ILMENITE 11 G % ID UNCERTAIN; 12 G MAGN 13 G % LONG TRAINS OF ATTACHED OCTAHEDRA; 14 G GLASS 15 G % DEVITRIFIED* 16 A OTHER GLASS 17 A % DEVITRIFICATION; 18 A SMEC INTERSTITIAL GROUNDMASS, 19 A GLASS 20 V 1.5-2.5 5 GLASS 21 37332A 31 3 150 0 339.50 342.65 RB I PCE 1B 27 1 S RT PLAG-OL PHYRIC BASALT 2 S % ONE FRAGMENT OF FOSSILIFEROUS SEDIMENT 4MM ACROSS; 3 S TEX INTERGRANULAR,INTERSERTAL* 4 P OL <1 5.0-10.0 5 P % FRESH AND ALTERED TO IDDINGS; 6 P PLAG 1.0-2.0EUHEDRAL 7 P % FRESH,SOME CLOTS,OFTEN ZONED WITH SHARP MARGINAL 8 P % ZONE* 9 G PLAG 40 0.01-0.1 10 G PYX 40 0.01-0.1 11 G OL 10 0.01-0.1 12 G % GROUNDMASS OL MOSTLY REPLACED BY IDDINGS + CARB; 13 G OP.MINS 5 14 G % INCLUDES ILMENITE + MAGN; 15 G GLASS 16 G % ALTERED,INTERSTITIAL; 17 G OTHER 5 18 A SMEC TR GROUNDMASS 19 A CARB GROUNDMASS OL 20 A IDDINGS OL PHENOS, OL 21 A GROUNDMASS 22 V 1.0-2.0 5 CARB,CALCITE 23 V % VESICLES PARTLY FILLED WITH HALF SPHERES OF 24 V % CALCITE-SOME COMPLETELY FILLED WITH CARB + 25 V % ZEOLITE?(PRISMATIC XTLS WITH SQUARE CROSS SECTION) 26 V % ,NATROLITE(?) + CARB + ZEOLITE MIXED TOGETHER* 27 37332A 31 3 790 820 339.50 343.31 WG I PCE 7D 14 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX SUBOPHITIC* 3 P PLAG 15 0.4-1.5 4 P % FRESH* 5 G PLAG 0.2 6 G PYX 0.2 7 G OP.MINS 8 G % INCLUDES MAGN + ILMENITE* 9 A SMEC INTERSTITIAL GROUNDMASS 10 A % RARE; 11 A SILICA INTERSTITIAL GROUNDMASS, 12 A GLASS 13 V TO 0.4 2 14 37332A 32 110801110 349.00 350.10 WG I PCE 14 22 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX VARIOLITIC,INTERSERTAL* 3 P PLAG 10 >0.5 4 P % FRESH,ZONED-SOME OSCILLATIONS; 5 P OL <1 >0.5 6 P % LARGE OL PHENOCRYST WITH PARALLEL EXTINCTION AND 7 P % AN APPARANT TWIN PLANE* 8 G OL 0.05 9 G % COMMON 10 G PLAG 0.05 11 G PYX 0.05 12 G OP.MINS 13 G % INCLUDES ILMENITE + MAGN; 14 G GLASS 15 G % FRESH AND ALTERED,BROWN,GOOD SECTION FOR PROBE 16 G % WORK(WIDE BEAM)* 17 A SMEC INTERSTITIAL,OL,GLASS 18 A GROUNDMASS 19 V 1 GLASS 20 V % DEVITRIFIED GLASS,GOOD EXAMPLE OF VESICLE PARTLY 21 V % FILLED WITH LIQUID-SEVERAL IN THE SECTION* 22 37332A 32 2 270 300 349.00 350.79 FLOW I PCE 2 29 1 S RT OL PHYRIC BASALT 2 S % ALTERED PATCHES IN GROUNDMASS; 3 S TEX INTERGRANULAR, PORPHYRITIC 4 S % GROUNDMASS: INTERSTITIAL* 5 P OL >5 >0.5 6 P SPINEL TO 0.25 7 P % MICROPHENOS,PICOTITE, VERY FRESH-EVEN IN 8 P % THE GROUNDMASS* 9 G OL 0.1-1 10 G PLAG 0.1-1 11 G PYX 0.1-1 12 G OP.MINS 0.1-1 13 G % INCLUDES MAGN+ILMENITE* 14 A SMEC GROUNDMASS, 15 A INTERSTITIAL 16 A CARB GROUNDMASS, OL PHENOS 17 A VESICLES 18 A % CALCITE; 19 A IDDINGS GROUNDMASS OL PHENOS 20 A SERP GROUNDMASS OL PHENOS 21 A CHLORITE GROUNDMASS 22 A % ID UNCERTAIN; 23 A FE.OX VESICLES, 24 A GROUNDMASS 25 A SILICA VESICLES 26 V CARB, SILICA, 27 V FE.OX 28 V % FE.OX NEXT TO WALL-THEN SILICA-THEN CARB* 29 37332A 33 11150 0 358.50 359.65 WG I 16 1 S RT PLAGIOCLASE PHYRIC BASALT 2 S % CONTACT BETWEEN PHYRIC BASALT AND CARBONATE VEIN- 3 S % PROBABLY RECRYSTALLIZED SEDIMENT; 4 S TEX INTERGRANULAR,VARIOLITIC* 5 P PLAG 10 TO 1.5 6 P % FRESH* 7 G OL 0.04 8 G % COMMON,MOSTLY ALTERED; 9 G PLAG 0.04 10 G PYX 0.04 11 G % FEATHERY; 12 G MAGN 13 A SMEC INTERSTITIAL GROUNDMASS 14 A CARB VEINS 15 V TO 1.0 3 CARB,GLASS 16 37332A 33 2 120 0 358.50 360.12 FRJ I PCE 1 32 1 S RT PLAGIOCLASE PHYRIC BASALT; 2 S TEX VARIOLITIC 3 S % STRONGLY DEVELOPED VARIOLITIC TEXTURE* 4 P PLAG >5 5 P % FRESH,THIN RIMS MORE SODIC THAN CORE ON PHENOS; 6 P OL <1 7 P % FRESH* 8 G PYX 40 9 G % AMOUNT UNCERTAIN; 10 G GLASS 16 11 G % ALTERED(15%) + FRESH(1%),SMALL PARTIAL RIMMING OF 12 G % UNALTERED GLASS IN SCATTERED VESICLES; 13 G PLAG 10 14 G % XTLS ARE SWALLOWTAILED(0.5X0.02MM),RANDOMLY 15 G % ORIENTED,IN FEATHERY MORTAR OF PLAG + PYX(?); 16 G OL 5 17 G % MICROLITES INTERGROWN WITH PLAG; 18 G MAGN 2 19 G % OPAQUES CLUSTERED ABOUT MARGINS OF PLAG FEATHERS* 20 A IDDINGS OL PHENOS 21 A % IDDINGS ABOUT OLIVINE; 22 A SMEC GLASS 23 A % ONLY TRACES OF CLEAR YELLOW SMEC PATCHES-WHERE 24 A % THEY OCCUR THERE ARE MANY SMALL PATCHES-AND THIN 25 A % RIMS OF SIMILAR SMEC IN VESICLES* 26 V 0.5 5 SMEC,ZEOL,GLASS 27 V % ONLY A TRACE OF ALL THREE,GLASS NEXT TO WALL-THEN 28 V % SMEC-THEN ZEOL,THIN RIMS OF SMEC IN VESICLES,SMALL 29 V % PARTIAL RIMS OF UNALTERED GLASS IN SCATTERED 30 V % VESICLES-THE RIMS HAVE SKELETAL FRAGILE MAGN 31 V % ASSOCIATED WITH THEM* 32 37332A 33 2 120 1 358.50 360.06 RB I PCE 1 23 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX VARIOLITIC* 3 P PLAG 1-5 0.2-10.0EUHEDRAL 4 P % FRESH,OFTEN IN SMALL GLOMEROPORPHYRITIC CLUSTERS; 5 P OL <1 >0.5 6 P % FRESH* 7 G OL 0.01-0.1 8 G % <1% OF OL XTLS ARE 0.05-0.1MM ACROSS; 9 G PLAG 0.01-0.1 10 G % A FEW PLAG LATHS SET IN BROWN GLASSY GROUNDMASS 11 G % INCIPIENTLY CRYSTALLIZED TO PYX SHEAVES,PLAG LATHS 12 G % POORLY TERMINATED WITH TYPICAL SWALLOWTAIL ENDS; 13 G PYX 0.01-0.1 14 G % TINY XTLS OF OPAQUES IN TRAINS ALONG CPX SHEAVES; 15 G OP.MINS 16 G % INCLUDES MAGN + ILMENITE,TINY XTLS OF OPAQUES IN 17 G % TRAINS ALONG CPX SHEAVES; 18 G GLASS 19 G % FRESH* 20 V 0.1-1.0 1-2 SMEC,CARB 21 V % ROCK IS VERY FRESH-ONLY TRACES OF CARB AND SMEC IN 22 V % SOME VESICLES* 23 37332A 33 2 120 2 358.50 360.06 RB I PCE 1 29 1 S RT PLAGIOCLASE-OLIVINE PHYRIC BASALT 2 S % OBSERVER MAY HAVE LABELED THIS WRONG; 3 S TEX INTERGRANULAR,INTERSERTAL* 4 P PLAG 5-10 1.0-2.0 5 P % FRESH,APPROX COMP AT LEAST AN60,SLIGHTLY ZONED ON 6 P % RIM; 7 P OL <1 8 P % FRESH AND ALTERED,OL PHENOCRYST HAS SOME BROWN 9 P % BIREFRINGENT INCLUSIONS* 10 G PYX 55 11 G % POORLY CRYSTALLIZED SHEAVES; 12 G PLAG 40 0.5LATHS 13 G OL 1 14 G % 2VZ 90; 15 G OP.MINS 2 16 G % INCLUDES MAGN + ILMENITE; 17 G GLASS TR 18 G % ALTERED* 19 A SMEC INTERSTITIAL GROUNDMASS 20 A CARB INTERSTITIAL GROUNDMASS 21 A SILICA INTERSTITIAL GROUNDMASS 22 A GLASS 23 A % ID UNCERTAIN; 24 A IDDINGS OL PHENOS 25 A % OL RIMMED WITH IDDINGS* 26 V 0.5-1.0 3-5 SMEC 27 V % SOME VESICLES RIMMED WITH BROWN ALTERED ZONES WITH 28 V % ABUNDANT ILMENITE* 29 37332A 33 2 920 950 358.50 360.94 FLOW I PCE 4 14 1 S RT APHYRIC BASALT 2 S % QUITE FRESH; 3 S TEX VARIOLITIC,INTERSERTAL* 4 G OL 0.1-1.0 5 G PLAG 0.1-1.0 6 G PYX 0.1-1.0 7 G OP.MINS 8 G % INCLUDES MAGN + ILMENITE; 9 G GLASS 10 G % ALTERED* 11 A SMEC GLASS 12 A OP.MINS GLASS 13 V TO 0.2 5-8 SMEC,CARB,ZEOL 14 37332A 33 2 920 950 358.50 360.94 FRJ I PCE 4 13 1 S RT APHYRIC BASALT 2 S % VERY MUCH LIKE PORPHYRITIC VARIETIES OF BASALT BUT 3 S % WITH NO PHENOCRYSTS; 4 S TEX VARIOLITIC,INTERSERTAL* 5 G PLAG SKELETAL 6 G PYX 7 G % SHEAVES OF CPX; 8 G OP.MINS 9 G % INCLUDES MAGN + ILMENITE; 10 G GLASS 11 G % FRESH* 12 V 0.1 5-7 SILICA 13 37332A 33 212801310 358.50 361.30 FLOW I PCE 4 15 1 S RT PLAG SPARSELY PHYRIC BASALT; 2 S TEX SUBOPHITIC,INTERGRANULAR,INTERSERTAL,VARIOLITIC* 3 P PLAG >0.5 4 P % FRESH PLAG(ONLY) "GLOMEROPORPHS",TWO VERY CORRODED 5 P % PLAG (XENO?)-CRYSTS* 6 G PLAG 0.1-1.0 7 G PYX 0.1-1.0 8 G OP.MINS 9 G % INCLUDES MAGN + ILMENITE* 10 A SMEC GLASS 11 A OTHER PLAG PHENOS 12 A % ID UNCERTAIN AS TO WHAT REPLACES PLAG PHENOS* 13 V 0.2 2-4 SMEC,HEMATITE 14 V % ONLY A TRACE OF HEMATITE* 15 37332A 34 210401070 368.00 370.56 FLOW I PCE 4 18 1 S RT PLAGIOCLASE SPARSELY PHYRIC BASALT; 2 S TEX SUBOPHITIC*