70504B 32 1 240 260 507.50 507.75 SDR I 16 1 S RT BASALTIC BRECCIA 2 S % PLAG-OL-CPX PHYRIC BASALT CLASTS,DESCRIPTION 3 S % APPLIES TO DOMINANT LITHIC FRAGMENTS; 4 S TEX VARIOLITIC,PHYRIC; 5 S WS BRECCIA* 6 P OL 5 .6 X.5EUHEDRAL 7 P % ALTERED TO SMECTITE; 8 P PLAG 15 .9X.2BLOCKY 9 P CPX 5 1X.5ANHEDRAL-SUBHEDRAL 10 G GLASS 25 11 G % REPRESENTED BY VARIOLITES; 12 G OTHER 13 G % SMECTITE AND BROKEN PIECES OF PLAG + CPX XTLS* 14 A SMEC 5SCATTERED OL 15 V 0 16 70504B 32 1 960 980 507.50 508.47 LAV I PCE 149 23 1 S RT PLAG-OL-CPX PHYRIC BASALT; 2 S TEX PHYRIC,GLOMEROPHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 10 0.2X0.5EUHEDRAL 5 P % ISOLATED IN THE GROUNDMASS; 6 P PLAG 24 1.5X0.2SUBHEDRAL-ANHEDRAL 7 P % MANY SIZES,INTERGROWN WITH CPX; 8 P CPX 6 0.7X0.5SUBHEDRAL-ANHEDRAL 9 G OL 10 .08X.04ANHEDRAL 10 G PLAG 20 .16X.01MICROLITES 11 G CPX 3 .08X.06ANHEDRAL 12 G % ID UNCERTAIN FOR CPX; 13 G MAGN 5 <.008SKELETAL 14 G % INTERSTITIAL TO SILICATES,IN GLASSY AREAS; 15 G GLASS 5 16 G HEMATITE 1 17 G % IN CRACKS OF PHENOS; 18 G COMBINE 15 MATURE SHEAF 19 G % INCLUDES PLAG + PYX* 20 A SMEC <1SCATTERED GLASS 21 A % GREEN,REPLACES GLASS OR FILLS TINY VOID* 22 V 0 23 70504B 32 2 190 210 507.50 509.20 SDR I PCE 160 14 1 S RT PLAG-CPX-OL PHYRIC BASALT 2 S TEX VARIOLITIC,PHYRIC; 3 S WS GLASSY MARGIN* 4 P OL 2 0.8X0.6EUHEDRAL 5 P % ALTERED TO SMECTITE; 6 P PLAG 30 1.5X.8BLOCKY LATHS 7 P % OFTEN GLOMEROPORPHYRITIC CLUSTERS WITH CPX; 8 P CPX 13 .9X.6EUHEDRAL-ANHEDRAL 9 G MAGN 3 10 G GLASS 63 11 G % REPRESENTED BY VARIOLITES,REMAINING GLASS BETWEEN 12 G % VARIOLITES WAS REPLACED BY SMECTITE* 13 A SMECTITE 10SCATTERED OL,GLASS 14 70504B 32 2 550 570 507.50 509.56 LAV I PCE 165 19 1 S RT PLAG-OL-CPX PHYRIC BASALT; 2 S TEX SUB-GLOMEROPHYRIC,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 EUHEDRAL 5 P % TOTALLY REPLACED AND SOFT ALTERATION PRODUCT WAS 6 P % GROUND AWAY IN TS FABRICATION LEAVING A HOLE; 7 P PLAG 13 .8X.3EUHEDRAL TO SUBHEDRAL LATHS 8 P % LATHS SOMETIMES ZONED; 9 P CPX 12 .3X.5SUBHEDRAL 10 G OL 2 .08X.05ANHEDRAL 11 G PLAG 2 .15X.01MICROLITES 12 G % SIZES OF PLAG CRYSTALS ARE VERY GRADATIONAL; 13 G CPX .08X.05ANHEDRAL 14 G MAGN 6 <.008SKELETAL 15 G GLASS 60 16 G % IMMATURE SHEAF TEXTURE* 17 A SMECTITE 5CRACKS OL 18 V 0 19 70504B 32 3 280 300 507.50 510.79 LAV I PCE 180 28 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX MEDIUM GRAINED GLOMEROPHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 .6X.5EUHEDRAL 5 P % ALTERED TO SMECTITE AND HEMATITE ACCORDING TO AREA 6 P % AND GROUND AWAY IN TS FABRICATION LEAVING A HOLE; 7 P PLAG 10 .25X.08ZONED EUHEDRAL LATHS 8 P % GATHERED IN CLUSTERS* 9 G OL 25 .04X.04ANHEDRAL 10 G % OFTEN ALTERED IN SMECTITE + HEMATITE; 11 G PLAG 38 .25X0.15MICROLITES 12 G MAGN 3 .04X.008SKELETAL 13 G GLASS 5 14 G % IDENTITY UNCERTAIN FOR GLASS, 15 G % REPLACED BY SMECTITE AND ASSOCIATED WITH MAGNETITE 16 G % INTERSTITIAL TO MICROLITES OR BETWEEN PHENOCRYSTS 17 G % IN THE CLUSTERS; 18 G COMBINE 15 MATURE SHEAF TEXTURE 19 G % INCLUDES PLAG + PYX* 20 A SMECTITE GLASS 21 A % GREEN SMECTITE; 22 A SMECTITE OL 23 A % COLORESS OR PALE GREEN SMECTITE; 24 A HEMATITE 5 25 A % SURROUNDING OL IN ALTERED PART OF ROCK AND FILLING 26 A % A CRACK* 27 V 0 28 70504B 33 1 730 750 516.50 517.24 LAV I PCE 191 23 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED HYALO-OPHITIC; 3 S WS FLOW INTERIOR* 4 P OL 5 1.0X.7EUHEDRAL 5 P % TOTALLY REPLACED BY HEMATITE AND POSSIBLY TALC, 6 P % ALSO REPLACED BY A GREEN PLEOCHROIC MINERAL; 7 P PLAG 10 1.2X.4EUHEDRAL LATHS 8 G OL 10 .04X.04ANHEDRAL 9 G % ALTERED SAME AS THE PHENOS; 10 G PLAG 35 .25X.02MICROLITES 11 G % ALL THE RANGES OF SIZE BETWEEN MICROLITES AND 12 G % PHENOS; 13 G CPX 12 .04X.04ANHEDRAL 14 G MAGN 5 .16X.16SKELETAL 15 G SPINEL <1 .04X.04EUHEDRAL 16 A SMECTITE GLASS,OL 17 A HEMATITE GLASS,OL 18 A % FILLS SOME CRACKS AND VOIDS; 19 A TALC OL 20 A CLAY OL 21 V 1SCATTERED SMEC OR HEMATITIRREGULAR 22 V % VOIDS* 23 70504B 33 1 920 950 516.50 517.44 LAV I PCE 194 10 1 S RT BASALT 2 S % THIS THIN-SECTION HAS NOT BEEN DESCRIBED IN DETAIL 3 S % BECAUSE IT IS NOT REPRESENTATIVE OF ITS COOLING 4 S % UNIT; 5 S TEX FINE-GRAINED,VARIOLITIC 6 S % BECOMES UNVARIOLITIC* 7 G GLASS 8 G % REPLACED BY SMEC* 9 A SMEC GLASS 10 70504B 33 2 500 520 516.50 518.51 LAV I PCE 207 27 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED PHYRIC, HYALO-OPHITIC; 3 S WS FLOW INTERIOR* 4 P OL 20 1.5X1.0EUHEDRAL 5 P % ALTERED TO SMECTITE + TALC IN ONE AREA AND 6 P % HEMATITE + TALC IN ANOTHER AREA; 7 P PLAG 15 .7X.4EUHEDRAL LATHS 8 P CPX 1 1.2X.5EUHEDRAL 9 G OL 5 .07X.07ANHEDRAL 10 G % ALTERED; 11 G PLAG 20 .2X.01MICROLITES 12 G % VERY EQUAL SIZES; 13 G CPX 5 .07X.07ANHEDRAL 14 G MAGN 4 <.01SKELETAL 15 G GLASS 5 16 G % INTERSTITIAL TO SILICATES, ASSOCIATED WITH MAGN; 17 G COMBINE 20 18 G % INCLUDES PYX + PLAG, 19 G % MATURE SHEAF TEXTURE* 20 A HEMATITE CRACKS, VOIDS 21 A SMECTITE 22 A TALC OL 23 A HEMATITE OL 24 A SMECTITE OL 25 V 5SCATTERED SMEC OR HEMATITIRREGULAR 26 V % VOIDS* 27 70504B 33 212601290 516.50 519.28 LAV I PCE 216 24 1 S RT PLAG-OL MOD PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED,OPHITIC 3 S % SOME SMALL AREAS OF GLASS; 4 S WS FLOW INTERIOR* 5 P OL 2 1.8X1.6EUHEDRAL 6 P % POSSIBLE REPLACEMENT BY HEMATITE, REPLACEMENT MATL 7 P % GROUND AWAY IN TS FABRICATION LEAVING A HOLE; 8 P PLAG 2 1.2X1.0SUBHEDRAL LATHS 9 G PLAG 40 .7X.3LATHS 10 G PLAG .08X.008 11 G % ALL SIZES BETWEEN PHENOS AND CRYSTALS FROM 12 G % GROUNDMASS OCCUR; 13 G CPX 36 .16X.15ANHEDRAL, PARALLEL 14 G MAGN 15 .024X.002MICROLITES AND SKELETAL XTALS 15 G % GATHERED ON AREAS INTERSTITIAL TO SILICATES, 16 G % POSSIBLY WITH GLASS; 17 G GLASS 5 18 G SPINEL 1 .1X.1EUHEDRAL 19 A SMECTITE <1 GLASS 20 A FE.OXIDE 1 OL 21 A % PART OF OLIVINE REPLACED* 22 V .08 1SCATTERED SMECTITE, 23 V FE.OXIDE 24 70504B 34 113301340 525.50 526.84 LAV I PCE 234 18 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX FINE GRAINED,SUBGLOMEROPHYRIC, FROM EXTERIOR TO 3 S INTERIOR-GLASSY, VARIOLITIC,SUBVARIOLITIC; 4 S WS NEXT TO GLASSY MARGIN* 5 P OL 2 .8X.7EUHEDRAL 6 P % REPLACED BY POSSIBLY SMECTITE OR IDDINGS; 7 P PLAG 10 1.0X.7SUBHEDRAL LATHS 8 G PLAG 6 .2X.005MICROLITES 9 G MAGN 2 <.008 10 G % LOCATED BETWEEN THE VARIOLES; 11 G GLASS 10 12 G % REPLACED BY GREEN SMECTITE; 13 G COMBINE 70 14 G % INCLUDES PYX + PLAG, VARIOLITIC AND SUBVARIOLITIC 15 G % TEXTURE* 16 A SMECTITE GLASS 17 V 0 18 70504B 34 211801200 525.50 528.19 LAV I PCE 253 23 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 7 .8X.6EUHEDRAL 5 P % THE PARTS WHICH HAVE NOT BEEN GROUND OUT IN THE 6 P % FABRICATION OF THE THIN SECTION ARE FRESH; 7 P PLAG 7 1.2X.8EUHEDRAL OR SUBHEDRAL LATHS 8 G OL 5 .08X.08ANHEDRAL 9 G % FRESH IF NOT GROUND OUT BY TS FABRICATION; 10 G PLAG 25 .08X.005MICROLITES 11 G % NUMEROUS OTHER SIZES BETWEEN SMALLEST MICROLITES 12 G % AND THE PHENOS; 13 G MAGN 6 <.008SKELETAL 14 G % THE CRYSTALS ARE SCATTERED THROUGH THE WHOLE ROCK 15 G % AND NOT GATHERED IN SOME AREAS LIKE IN OTHER 16 G % SAMPLES; 17 G COMBINE 50 18 G % INCLUDING PYX + PLAG, MATURE SHEAF TEXTURE 19 G % CRYSTALS PARTLY REPLACED BY IRON OXIDES* 20 A FE.OXIDE 8 21 A % FILLING NUMEROUS CRACKS IN GROUNDMASS AND PHENOS* 22 V 0 23 70504B 35 1 440 460 534.50 534.95 LAV I PCE 264 15 1 S RT APHYRIC BASALT; 2 S TEX MEDIUM GRAINED, HYALO-OPHITIC,APHYRIC; 3 S WS FLOW INTERIOR* 4 G PLAG 35 .4X.02MICROLITES 5 G CPX 8 .06X.01ANHEDRAL 6 G MAGN 8 .01SKELETAL 7 G SPINEL <1 .06X.06EUHEDRAL 8 G COMBINE 40 9 G % INCLUDING PYX + PLAG, MATURE SHEAF TEXTURE, 10 G % PARTLY REPLACED BY IRON HYDROXIDE OR IRON OXIDE* 11 A SMECTITE MROLITIC VOID 12 A FE.OXIDE PART OF GRNDMASS PYX+PLAG 13 V 0.3X.15 9 SMEC, FE.HYDRXIRREGULAR 14 V % MIAROLITIC VOIDS* 15 70504B 35 1 840 850 534.50 535.35 LAV I PCE 270 17 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX GLASSY,VARIOLITIC,SUBVARIOLITIC,FINE GRAINED, 3 S PHYRIC; 4 S WS GLASSY MARGIN AND NEXT TO THE GLASSY MARGIN* 5 P OL 1 .64X.3PERFECTLY EUHEDRAL 6 P % SOMETIMES QUITE ANHEDRAL; 7 P PLAG 2 1.5X.4EUHEDRAL LATHS 8 G OL 5 .1X.1EUHEDRAL 9 G PLAG 10 .5X.005MICROLITES 10 G MAGN <<.001 11 G COMBINE >82 12 G % INCLUDING PYX + PLAG, 13 G % VARIOLITIC AND SUBVARIOLITIC* 14 A CLAYS OL 15 A % IDENTITY UNSURE FOR CLAYS* 16 V 0 17 70504B 35 2 340 360 534.50 536.35 LAV I PCE 287 20 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED,SUBGLOMEROPHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 1 .25X.2SUBHEDRAL 5 P PLAG 5 1X.6SUBHEDRAL LATHS 6 G OL 4 .02X.02ANHEDRAL 7 G PLAG 40 .08X.008MICROLITES 8 G MAGN 6 <.008POSSIBLY SKELETAL 9 G SPINEL 1 EUHEDRAL 10 G COMBINE 40 11 G % INCLUDES PYX+PLAG, MATURE SHEAF TEXTURE, WHERE 12 G % XTALS ARE PARTLY REPLACED BY FE.OXIDES; 13 G % IN THE WHOLE SECTION NUMEROUS HOLES OCCUR AND IT 14 G % IS IMPOSSIBLE TO DETERMINE IF THEY WERE MINERALS 15 G % PICKED OUT DURING FABRICATION OF THE TS OR NOT* 16 A SMECTITE VOIDS, CRACK 17 A FE.OXIDE 20SOME VOIDS PART OF THE GROUNDMASS 18 V 0.7 4SCATTERED SMECTITE IRREGULAR 19 V % MIAROLITIC VOIDS* 20 70504B 35 2 530 560 534.50 536.55 SDR I PCE 289 15 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, PHYRIC; 3 S WS NEXT TO GLASSY MARGIN* 4 P OL 1-2 .25X2.0EUHEDRAL-SUBHEDRAL 5 P % SLIGHTLY ALTERED TO IDDINGS IN CRACKS; 6 P PLAG 3 1X.6BLOCKY-EQUANT 7 G PLAG 25-30 SKELETAL LATHS 8 G MAGN 8-10 .05SKELETAL 9 G GLASS 60 10 G % REPRESENTED BY QUENCHED PLAG-CPX NEEDLES* 11 A SMECTITE <1SCATTERED GLASS 12 A % SCARCE; 13 A FE.OXIDE 2-5 MAGN,GLASS 14 A % LOCATION IS INTERSTITIAL TO FELDSPARS* 15 70504B 36 1 780 800 543.50 544.29 LAV I PCE 299 16 1 S RT PLAG-CPX SPARSELY PHYRIC BASALT; 2 S TEX SUBOPHITIC TO INTERSERTAL, MEDIUM GRAINED, 3 S PHYRIC; 4 S WS FLOW INTERIOR* 5 P PLAG 1 1.2X.6SUBHEDRAL ZONED LATH 6 P CPX <1 .5X.4SUBHEDRAL 7 G PLAG 35 .8X.04EUHEDRAL LATHS 8 G CPX 37 .24X.20ANHEDRAL 9 G MAGN 5 .06X.05EUHEDRAL 10 G % IN GLASSY AREAS; 11 G GLASS 20 12 G % COMPLETELY REPLACED BY SMECTITE* 13 A SMEC 22 GLASS OR FILLING VOIDS 14 V .80 2SCATTERED SMEC OR VOIDS IRREGULAR 15 V % MIAROLITIC VOIDS* 16 70504B 36 2 680 700 543.50 545.69 LAV I PCE 309 20 1 S RT PLAG-OL MOD PHYRIC BASALT; 2 S TEX SUBOPHITIC TO INTERSERTAL (SOME GLASSY AREAS), 3 S MEDIUM GRAINED,PHYRIC; 4 S WS FLOW INTERIOR* 5 P OL <1 .6X.4SUBHEDRAL 6 P % TOTALLY REPLACED BY GREEN SMECTITE AND TALC 7 P PLAG 2 1.2X0.6SUBHEDRAL LATHS 8 G PLAG 37 0.6X.05EUHEDRAL LATHS 9 G % SEVERAL PLAG LATHS CROSS A CPX; 10 G CPX 37 .3X.2ANHEDRAL 11 G % CRYSTAL SUBOPHITIC TEXTURE; 12 G MAGN 4 .06X.04SUBHEDRAL,SKELETAL 13 G % IN GLASSY AREAS; 14 G ILMENITE .008SKELETAL 15 G GLASS 20 16 G % COMPLETELY REPLACED BY SMECTITE* 17 A SMEC 20 GLASS AND FILLING VOIDS 18 V .8X.3 4SCATTERED SMECTITE IRREGULAR 19 V % VOIDS, MAY BE EX GLASS* 20 70504B 36 310101030 543.50 547.52 LAV I PCE 325 18 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX OPHITIC TO INTERSERTAL,MEDIUM TO COARSE GRAINED, 3 S PHYRIC; 4 S WS FLOW INTERIOR* 5 P PLAG 2 1.1X.6SUBHEDRAL LATHS 6 P CPX 2 1.2X1.0SUBHEDRAL 7 P % ONE HUGE PYX PHENO 5X5 MM* 8 G PLAG 38 .5X.03SUBHEDRAL LATHS 9 G CPX 38 .2X.2ANHEDRAL 10 G MAGN 5 .05X.05SKELETAL 11 G % CHIEFLY IN GLASSY AREAS; 12 G GLASS 15 13 G % INTERSTITIAL TO SILICATES MORE OR LESS ABUNDANT 14 G % ACCORDING TO THE AREA-AND COMPLETELY REPLACED BY 15 G % SMECTITE* 16 A SMEC 15 GLASS 17 V 0 18 70504B 36 4 780 820 543.50 548.80 LAV I PCE 333 16 1 S RT CPX-PLAG MODERATELY PHYRIC BASALT; 2 S TEX SUBOPHITIC SLIGHTLY INTERSERTAL, MEDIUM GRAINED, 3 S PHYRIC; 4 S WS FLOW INTERIOR* 5 P CPX 9 2.5X1.0SUBHEDRAL LATHS 6 P % WHOLE BORDERS ARE IRREGULAR; 7 P PLAG 3 .6X.2SUBHEDRAL LATHS 8 P % OFTEN GATHERED IN SOME AREAS* 9 G PLAG 40 .3X.025SUBHEDRAL LATHS 10 G CPX 40 .3X.15ANHEDRAL 11 G MAGN 4 .025EUHEDRAL OR SKELETAL 12 G GLASS 4 13 G % REPLACED BY GREEN SMECTITES* 14 A SMEC 4 GLASS 15 V 0 16 70504B 37 111501180 552.50 553.67 LAV I PCE 357 21 1 S RT PLAG-OL-CPX MODERATELY PHYRIC BASALT; 2 S TEX FINE GRAINED,SUBVARIOLITIC,SUBGLOMEROPHYRIC; 3 S WS NEXT TO GLASSY MARGIN* 4 P OL <2 .5X.3EUHEDRAL 5 P % COMPLETELY REPLACED BY IDDINGS AND SMEC, NOW A 6 P % HOLE DUE TO TS FABRICATION; 7 P PLAG 3 1.1X.25SUBHEDRAL LATHS 8 P CPX 1 .45X.15ANHEDRAL 9 P % PLAG AND CPX OFTEN GATHERED IN INTERGROWN CLUMPS* 10 G PLAG 10 0.9X.04MICROLITES,SKELETAL 11 G % SOMETIMES SKELETAL; 12 G CPX 2 .08X.06ANHEDRAL 13 G MAGN 3 <.008 14 G COMBINE 80 15 G % INCLUDES PYX+PLAG, IMMATURE SHEAF TEXTURE* 16 A SMEC OL 17 A IDDINGS OL 18 A % THE NATURE OF THIS REPLACEMENT CANNOT BE PROVED 19 A % HERE, A HOLES EXIST DUE TO TS FABRICATION* 20 V 0 21 70504B 37 3 510 540 552.50 556.03 LAV I PCE 397 22 1 S RT PLAG-OL-CPX SPARSELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL <1 .4X.4EUHEDRAL 5 P % COMPLETELY ALTERED IN HEMATITE AND GREEN SMECTITE; 6 P PLAG 1 1.0X.35SUBHEDRAL LATHS 7 P % PARTLY ALTERED AND CROSSED BY SMECTITE VEINS; 8 P CPX <1 .2X.2ANHEDRAL 9 G PLAG 30 .4X.02MICROLITES 10 G CPX 20 .06X.04ANHEDRAL 11 G MAGN 7 <.008SKELETAL 12 G GLASS 4 13 G % COMPLETELY REPLACED BY SMECTITE; 14 G COMBINE 36 15 G % INCLUDES PYX+PLAG, MATURE SHEAF TEXTURE* 16 A COMBINE 10 OL 17 A % INCLUDES SMEC + HEMATITE; 18 A ZEOLITES 2 SOME PLAG PHENOS 19 A % IDENTITY UNCERTAIN ABOUT ZEOLITES* 20 V 3 FE.OXIDE, SMEC 21 V % MIAROLITIC VOIDS* 22 70504B 38 1 280 310 561.50 561.80 LAV I PCE 414 23 1 S RT OL-PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 1.7X.8PERFECTLY EUHEDRAL 5 P % COMPLETELY REPLACED BY COLORLESS SMEC, CRACKS 6 P % FILLED BY IDDINGS; 7 P PLAG 4 .8X.16EUHEDRAL LATHS 8 P % POSSIBLY ALTERED; 9 P CPX 1 .4X.3ANHEDRAL 10 G PLAG 30 .3X.01MICROLITES 11 G CPX 5 .08X.06ANHEDRAL 12 G MAGN 2 .01X.01SKELETAL 13 G COMBINE 45 14 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 15 A CALCITE CRACK, VOIDS 16 A % ASSOCIATED WITH SMECTITE; 17 A COMBINE VOIDS, CRACKSOL 18 A % INCLUDES SMEC + IDDINGS; 19 A ZEOLITES CRACK 20 A COMBINE VOIDS 21 A % INCLUDES FE.OXIDES + FE.HYDRX* 22 V .6X.8 8SCATTERED SMEC, FE.OXIDE IRREGULAR 23 70504B 38 212901310 561.50 564.30 LAV I PCE 452 28 1 S RT OL-PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 2 .7X.3EUHEDRAL 5 P % COMPLETELY REPLACED BY SMEC AND POSSIBLY CALCITE; 6 P PLAG 2 1.2X.3EUHEDRAL OR SUBHEDRAL LATHS 7 P CPX 1 .35X.30ANHEDRAL 8 P % PLAG AND CPX CRYSTALS HAVE OFTEN GROWN FROM THE 9 P % SAME NUCLEUS* 10 G OL 3 .2X.05EUHEDRAL OR ANHEDRAL 11 G % COMPLETELY REPLACED BY GREEN SMECTITE, FE.OXIDES, 12 G % AND FE.HYDRX; 13 G PLAG 25 .2X.01MICROLITES 14 G CPX 2 .04X.04 15 G MAGN 5 .01X.008SKELETAL 16 G GLASS 5 17 G COMBINE 55 18 G % INCLUDES PYX+PLAG, MATURE SHEAF TEXTURE* 19 A GLASS 20 A SMEC 21 A FE.OXIDE 22 A FE.HYDRX 23 A % ALL REPLACING GLASS, OL, AND MIAROLITIC VOIDS; 24 A % THE NATURE AND PERCENTAGE OF THIS REPLACEMENT, 25 A % DEPENDS ON THE AREA OF THE SECTION* 26 V .4X.4 SCATTERED NOW = HOLE IRREGULAR 27 V % VOIDS, CAN BE OLD OLIVINE (ANHEDRAL)* 28 70504B 39 1 480 500 570.50 570.99 LAV I PCE 462 23 1 S RT PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX FINE GRAINED,SUBGLOMEROPHYRIC; 3 S WS FLOW INTERIOR 4 P OL <1 .8X.6PERFECTLY EUHEDRAL 5 P % NOW = HOLE, ONLY SHAPE OF THE CRYSTAL INDICATES IT 6 P % IS OL; 7 P PLAG 5 .6X.2SUBHEDRAL TO EUHEDRAL LATHS 8 P % GATHERED IN CLUSTERS WITH OR WITHOUT CPX; 9 P CPX <1 .3X.3ANHEDRAL 10 P % ASSOCIATED WITH PLAG CRYSTALS IN CLUSTERS* 11 G PLAG 24 .8X.04MICROLITES OR LATHS 12 G CPX 3 .05X.05ANHEDRAL 13 G MAGN 3 <.008SKELETAL 14 G % SCATTERED IN THE GROUNDMASS, MANY CRYSTALS ARE 15 G % GATHERED IN AN ELONGATED AREA (GENERAL SHAPE OF A 16 G % VEIN) WHICH CROSSES THE WHOLE ROCK; 17 G SPINEL <1 18 G COMBINE 65 19 G % INCLUDES PYX+PLAG, IMMATURE AND MATURE SHEAF TEX* 20 A OTHER OL 21 A % UNKNOWN* 22 V 0 23 70504B 39 114001420 570.50 571.91 SDR I PCE 476 14 1 S RT OL-PLAG MODERATELY PHYRIC BASALT; 2 S TEX INTERSERTAL WITH OPHITIC AREAS, PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 2-3 .35X.35EUHEDRAL 5 P % ALTERED TO SMEC; 6 P PLAG 2-3 1.3X.8BLOCKY 7 G OL 30 .7X.7ANHEDRAL 8 G PLAG 35 .8X.1SKELETAL-LATH 9 G MAGN 5-10 .1X.05SKELETAL 10 G GLASS 25-30 11 G % REPRESENTED BY MICROLITES AND ALTERED ZONES* 12 A SMEC SCATTERED OL, GLASS 13 A OXIDE SCATTERED GLASS, MAGNETITE 14 70504B 39 2 400 420 570.50 572.41 LAV I PCE 486 22 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, FINE TO MEDIUM GRAINED PHYRIC; 3 S % THE GROUNDMASS IS MATURE TO IMMATURE SHEAF TEX; 4 S WS FLOW INTERIOR* 5 P OL 4 1.0X.8EUHEDRAL 6 P % TOTALLY REPLACED BY POSSIBLY SMECTITE + (HOLE); 7 P PLAG 10 1.1X.5SUBHEDRAL LATH 8 P % SOMETIMES ZONED AND CROSSED BY OPAQUE VEINS; 9 P CPX 1 .4X.32EUHEDRAL 10 P % FRESH* 11 G OL 3 .06X.05EUHEDRAL 12 G % COMPLETELY REPLACED BY POSSIBLY SMECTITE; 13 G PLAG 10 .12X.005MICROLITES 14 G CPX 2 .02X.02ANHEDRAL 15 G MAGN 5 SKELETAL 16 G COMBINE 70 17 G % INCLUDES PYX+PLAG, MATURE TO IMMATURE SHEAF TEX* 18 A SMECTITE OL 19 A % IDENTITY UNCERTAIN FOR SMECTITE 20 V 2 SMECTITE 21 V % MIAROLITIC VOIDS* 22 70504B 39 213501380 570.50 573.37 LAV I PCE 496 21 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX OPHITIC-INTERGRANULAR, MEDIUM GRAINED, 3 S SUBGLOMEROPHYRIC, VERY SMALL AMOUNT OF GLASS; 4 S WS FLOW INTERIOR* 5 P OL >2 .8X.5PERFECTLY EUHEDRAL 6 P % PARTLY REPLACED BY SMEC OR SERPENTINE, PARTLY 7 P % FRESH; 8 P PLAG 8 1.2X.5SUBHEDRAL LATHS 9 P % OFTEN GATHERED IN SOME KIND OF CLUSTER AND ZONED* 10 G PLAG 40 .2X.03LATHS 11 G CPX 40 .35X.30ANHEDRAL 12 G % PLAG AND CPX ARE BOTH GATHERED IN AN OPHITIC TEX; 13 G MAGN 3 .01X.01SKELETAL 14 G GLASS 7 15 G % PART OF THIS GLASS MAY BE TINY (ALTERED IN SMEC) 16 G % OL CRYSTALS* 17 A COMBINE 2 PARTLY OL 18 A % INCLUDES SMEC+TALC+POSSIBLY SERPENTINE; 19 A SMEC 2 GLASS 20 V 0 21 70504B 40 112401260 579.50 580.75 LAV I PCE 520 20 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX OPHITIC TO INTERSERTAL,MEDIUM TO COARSE GRAINED, 3 S PHYRIC; 4 S WS FLOW INTERIOR* 5 P OL 2 1.3X1.0EUHEDRAL 6 P % PROBABLY REPLACED, NOW = HOLE; 7 P PLAG 5 2.5X1.5SUBHEDRAL 8 P % SOMETIMES ZONED; 9 P CPX <1 1.0X.8SUBHEDRAL 10 P % TWINNED,ONE PHENO IN THE SECTION* 11 G PLAG 40 .4X.04LATHS 12 G % MANY UNEQUAL SIZES BETWEEN THIS ONE AND PHENOS; 13 G CPX 40 .35X.25ANHEDRAL 14 G MAGN 3 .08X.05SKELETAL 15 G % LOCATED IN THE GLASS; 16 G GLASS <10 17 G % INTERSTITIAL TO SILICATES* 18 A SMEC GLASS AND PROBABLY OL 19 V 0 20 70504B 40 3 560 580 579.50 583.07 LAV I PCE 548 25 1 S RT PLAG-CPX-OL PHYRIC BASALT; 2 S TEX OPHITIC-INTERSERTAL, MEDIUM TO COARSE GRAINED, 3 S PHYRIC; 4 S WS FLOW INTERIOR 5 P OL 1 .7X.5EUHEDRAL 6 P % PROBABLY REPLACED (NOW=HOLE); 7 P PLAG 8 1.4X.7SUBHEDRAL LATHS 8 P % SOMETIMES ZONED; 9 P CPX 2 1.2X1.2SUBHEDRAL TO ANHEDRAL 10 P % TWINNED* 11 G OL 8 .08X.05SUBHEDRAL 12 G % COMPLETELY REPLACED BY POSSIBLY SMECTITE, IT IS 13 G % HARD TO DISTINGUISH FROM THE GLASS; 14 G PLAG 35 .5X.1SUBHEDRAL LATHS 15 G % NUMEROUS UNEQUAL SIZES, ARRANGED IN AN OPHITIC 16 G % TEXTURE; 17 G CPX 35 .55X.40ANHEDRAL 18 G MAGN 5 .06X.06EUHEDRAL, SKELETAL MICROLITES 19 G % IN GLASSY AREAS; 20 G GLASS 6 21 G % REPLACED BY SMEC* 22 A SMEC GLASS, OL 23 A % IDENTITY UNCERTAIN FOR SMEC AND OL* 24 V 0 25 70504B 41 111801200 584.00 585.19 LAV I PCE 594 19 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX OPHITIC, SLIGHTLY INTERSERTAL, MEDIUM TO COARSE 3 S GRAINED PHYRIC; 4 S WS FLOW INTERIOR* 5 P OL 7 2.5X1.5EUHEDRAL 6 P % PARTLY REPLACED BY VERY PALE GREEN SMEC + TALC; 7 P PLAG 8 .6X.25SUBHEDRAL LATHS 8 G PLAG 36 .15X.01SUBHEDRAL LATHS 9 G CPX 35 .15X.15ANHEDRAL 10 G % PLAG AND CPX BOTH HAVE OPHITIC TEXTURE; 11 G MAGN 3 .08X.08SKELETAL OR EUHEDRAL 12 G GLASS 5 13 G % REPLACED BY SMECTITE; 14 G SPINEL <1 .12X.12SUBHEDRAL 15 A SMEC OL 16 A % PALE GREEN,OL PARTLY REPLACED; 17 A TALC OL 18 V 0 19 70504B 41 2 210 240 584.00 585.73 SDR I PCE 500 14 1 S RT OL-PLAG-SPINEL PHYRIC BASALT; 2 S TEX OPHITIC TO INTERSERTAL, MEDIUM GRAINED,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 .5X.5SUBHEDRAL 5 P PLAG 5 .6X.3BLOCKY LATHS 6 P % OFTEN AGGREGATED; 7 P SPINEL <<1 SUBHEDRAL 8 G OL 40 .1X.1ANHEDRAL 9 G PLAG 40 .7X.1LATHS 10 G GLASS 5-10 11 G % REPLACED BY SMECTITE* 12 A SMEC 10-15SCATTERED GLASS,OL 13 A % BROWN* 14 70504B 41 311201150 584.00 588.14 LAV I PCE 625 19 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 .7X.5EUHEDRAL 5 P % COMPLETELY REPLACED BY GREEN SMEC + (HOLE); 6 P PLAG 8 .64X.50EUHEDRAL LATHS 7 P CPX <1 .4X.4SUBHEDRAL 8 G OL 3 .06X.03SUBHEDRAL 9 G % IDENTITY UNCERTAIN FOR OL, 10 G % COMPLETELY REPLACED BY GREEN SMEC, (HARD TO 11 G % DISTINGUISH FROM GLASS WHEN ANHEDRAL); 12 G PLAG 35 .16X.02LATHS 13 G CPX 35 .08X.08ANHEDRAL 14 G MAGN 5 .025X.02SKELETAL 15 G GLASS 9 16 G % COMPLETELY REPLACED BY GREEN SMECTITE* 17 A SMEC OL,GLASS 18 V 0 19 70504B 41 4 420 430 584.00 588.92 LAV I PCE 634 22 1 S RT OL-PLAG MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM TO COARSE GRAINED,PHYRIC; 3 S WS FLOW INTERIOR 4 P OL 2 1.0X.6EUHEDRAL 5 P % COMPLETELY REPLACED BY PALE GREEN SMECTITE AND 6 P % POSSIBLY CALCITE + HOLE FROM TS FABRICATIO(; 7 P PLAG 2 .8X.5BROKEN LATHS 8 G OL 5 .06X.04 9 G PLAG 20 .5X.01LATHS 10 G CPX 17 .1X.06ANHEDRAL 11 G % FOR PLAG AND CPX, ALL THE RANGES OF SIZE OCCUR 12 G % BETWEEN THIS AND THE .008 CRYSTALS COMPRISING SOME 13 G % KIND OF "VERY MATURE SHEAF TEXTURE"; 14 G MAGN 3 .01X.01SKELETAL 15 G GLASS 5 16 G % REPLACED BY PALE BROWN GREEN SMECTITE; 17 G COMBINE 40 18 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 19 A SMEC OL,GLASS 20 V 6 GREENISH SMEC IRREGULAR 21 V % MIAROLITIC VOIDS AND CRACKS* 22 70504B 42 1 970 990 593.00 593.98 LAV I PCE 653 17 1 S RT PLAG MODERATELY PHYRIC BASALT; 2 S TEX SUBOPHITIC (SOME INTERSERTAL AREAS), MEDIUM TO 3 S COARSE GRAINED,PHYRIC; 4 S WS FLOW INTERIOR* 5 P PLAG 8 1.2X.5EUHEDRAL,SOME ZONED LATHS 6 G OL 2 .2X.25 7 G % IDENTITY UNCERTAIN FOR OLIVINE, NOW = HOLE 8 G PLAG 35 .4X.2SUBHEDRAL LATHS 9 G CPX 45 .16X.10ANHEDRAL 10 G % ALL PLAG AND CPX XTALS HAVE MANY DIFFERENT SIZES; 11 G MAGN 5 .08X.06SKELETAL 12 G % IN GLASSY AREAS; 13 G GLASS 5 14 G % COMPLETELY REPLACED BY GREEN SMECTITE* 15 A SMECTITE GLASS,OL 16 V 0 17 70504B 42 2 480 510 593.00 594.99 LAV I PCE 666 17 1 S RT APHYRIC BASALT; 2 S TEX OPHITIC-INTERSERTAL,APHYRIC; 3 S WS FLOW INTERIOR* 4 G OL >5 1.0X.6 5 G % COMPLETELY REPLACED BY GREEN SMECTITE AND TALC, 6 G % IDENTITY UNCERTAIN FOR SMECTITE AND TALC; 7 G PLAG 38 1.2X.16SUBHEDRAL LATHS 8 G CPX 38 .5X.4ANHEDRAL 9 G % PLAG AND CPX ARE BOTH ARRANGED IN AN OPHITIC TEX; 10 G MAGN 4 .04SKELETAL 11 G GLASS 14 12 G % REPLACED BY GREEN SMECTITE* 13 A SMECTITE OLIVINE 14 A TALC OLIVINE 15 A % SMECTITE IS MORE ABUNDANT THAN TALC* 16 V 0 17 70504B 44 1 220 240 611.00 611.23 SDR I PCE 701 10 1 S RT PLAG-CPX PHYRIC BASALT; 2 S TEX VARIOLITIC-HYALOPILITIC, FINE GRAINED,PHYRIC; 3 S WS GLASSY MARGIN AND NEXT TO GLASSY MARGIN* 4 P PLAG 10-15 .7X.25LATHS 5 P CPX 1 1X1EUHEDRAL 6 G PLAG 10 .5X.05SKELETAL LATHS 7 G MAGN 3 SKELETAL 8 G GLASS 75 9 G % REPRESENTED BY VARIOLITIC AND SHEAF TEXTURES* 10 70504B 44 2 880 910 611.00 613.40 LAV I PCE 728 21 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT; 2 S TEX HYALOPILITIC, FINE TO MEDIUM GRAINED,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 2 .6X.16EUHEDRAL 5 P % REPLACED BY GREEN SMECTITE AND POSSIBLY TALC; 6 P PLAG 3 .9X.3SUBHEDRAL LATHS 7 P CPX 3 .8X.5SUBHEDRAL (ROUNDED CORNERS) 8 G OL 7 .06X.04SUBHEDRAL 9 G % REPLACED BY GREEN SMECTITE; 10 G PLAG 20 .2X.01LATHS 11 G CPX 5 .04X.03ANHEDRAL 12 G MAGN 5 .01X.01SKELETAL 13 G GLASS 7 14 G COMBINE 45 15 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 16 A SMECTITE GLASS, OLIVINE 17 A TALC OLIVINE 18 A % IDENTITY UNCERTAIN FOR TALC* 19 V .25 3 SMECTITE IRREGULAR 20 V % MIAROLITIC VOIDS* 21 70504B 45 111801210 620.00 621.20 LAV I PCE 747 28 1 S RT PLAG-OL-CPX MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM-GRAINED, PHYRIC; 3 S WS FLOW INTERIOR 4 P OL 2 .6X.4EUHEDRAL 5 P % COMPLETELY REPLACED SMECTITE AND CALCITE; 6 P PLAG 3 .9X.6EUHEDRAL LATHS 7 P % SOMETIMES ZONED AND AROUND CRACKS WITH 8 P % UNDETERMINABLE FILLING; 9 P CPX <1 .4X.3SUBHEDRAL 10 P % SOMETIMES ROUNDED* 11 G OL 7 .08X.08SUBHEDRAL 12 G % IDENTITY UNCERTAIN FOR OL, REPLACED BY SMECTITE; 13 G PLAG 22 .3X.03LATHS 14 G CPX 22 .06X.04ANHEDRAL 15 G MAGN 4 .01X.015SKELETAL 16 G % CHIEFLY IN GLASSY AREA; 17 G GLASS 5 18 G % REPLACED BY SMECTITE; 19 G SPINEL <1 .04X.04SUBHEDRAL 20 G % CORNERS ARE ROUND; 21 G COMBINE 30 22 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 23 A COMBINE OLIVINE,GLASS 24 A % INCLUDES CALCITE + SMECTITE* 25 V .04X.03 5 SMEC,EMPTY 26 V % MAY BE OLD SUBHEDRAL ALTERED OLIVINE CRYSTALS; 27 V % MIAROLITIC VOIDS* 28 70504B 46 1 800 830 629.00 629.82 LAV I PCE 775 23 1 S RT OL-PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, FINE TO MEDIUM GRAINED, 3 S SUBGLOMEROPHYRIC; 4 S WS NEXT TO GLASSY MARGIN* 5 P OL 3 .4X.4SUBHEDRAL 6 P % COMPLETELY REPLACED BY SMECTITE; 7 P PLAG 2 1.5X.5SUBHEDRAL ZONED LATH 8 P CPX 2 1.5X.5LATHS WHOSE CORNERS ARE ROUND 9 P % TWINNED* 10 G OL 2 .16X.08SUBHEDRAL 11 G % REPLACED BY GREEN SMECTITE; 12 G % ALL THE RANGES OF SIZE BETWEEN PHENOCRYSTS AND THE 13 G % CRYSTALS OF THE GROUNDMASS OCCUR; 14 G PLAG 17 .3X.03MICROLITES 15 G CPX 8 .08X.08ANHEDRAL 16 G MAGN 6 SKELETAL 17 G % OR IN VEINS IN THE CPX VEINS; 18 G COMBINE 70 19 G % INCLUDES PYX + PLAG, 20 G % MATURE TO IMMATURE SHEAF TEXTURE* 21 A SMECTITE OLIVINE 22 V 0 23 70504B 47 2 550 570 638.00 640.06 LAV I PCE 829 19 1 S RT PLAG-CPX PHYRIC BASALT; 2 S TEX SUBVARIOLITIC, FINE GRAINED,SUBGLOMEROPHYRIC; 3 S WS NEXT TO GLASSY MARGIN* 4 P OL .5X.4EUHEDRAL 5 P % TOTALLY REPLACED BY SMECTITE + HOLE; 6 P PLAG 7 .6X.16EUHEDRAL LATH 7 P CPX 7 3.0X1.0PERFECTLY EUHEDRAL 8 P % HOWEVER THE CORNERS OF THE CRYSTALS ARE SURROUNDED 9 P % AND OFTEN TWINNED* 10 G OL 1 .13X.1EUHEDRAL LATHS 11 G % COMPLETELY REPLACED BY SMECTITE; 12 G PLAG 6 .2X.08MICROLITES 13 G CPX 2 .04X.04ANHEDRAL 14 G MAGN 7 15 G COMBINE 70 16 G % INCLUDES PYX + PLAG, SUBVARIOLITIC TEXTURE* 17 A SMECTITE OLIVINE 18 V 0 19 70504B 47 4 420 450 638.00 642.94 LAV I PCE 853 20 1 S RT PLAG-CPX-OL PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED,SUBGLOMEROPHYRIC, 3 S SUBOPHITIC (TO INTERSERTAL) GROUNDMASS; 4 S WS FLOW INTERIOR* 5 P OL 1 .5X.3EUHEDRAL 6 P % PARTLY REPLACED BY SMECTITE + (HOLE); 7 P PLAG 7 1.6X.5SUBHEDRAL LATHS 8 P CPX 7 1.6X1.0EUHEDRAL 9 P % PLAG AND CPX OFTEN GATHERED IN THE SAME AREAS* 10 G PLAG 35 .25X.01MICROLATHS 11 G CPX 35 .08X.06ANHEDRAL 12 G MAGN 6 .05X.03SKELETAL 13 G GLASS 6 14 G % REPLACED BY BROWN GREEN SMECTITE* 15 A SMECTITE GLASS 16 A % BROWN-GREEN* 17 V SCATTERED EMPTY IRREGULAR 18 V % VOIDS, MAY BE ANHEDRAL MINERALS GROUND AWAY DURING 19 V % THE THIN SECTION FABRICATION* 20 70504B 48 1 460 490 647.00 647.48 LAV I PCE 864 20 1 S RT CPX-PLAG-OL SPARSELY PHYRIC BASALT; 2 S TEX FINE TO MEDIUM GRAINED PHYRIC, HYALOPILITIC, 3 S WITH AN INTERSERTAL GROUNDMASS; 4 S WS FLOW INTERIOR* 5 P OL <1 .4X.025SUBHEDRAL 6 P % COMPLETELY REPLACED BY BROWN-GREEN SMECTITE; 7 P PLAG <1 .45X.4SUBHEDRAL LATH 8 P CPX 1 1.5X1.1EUHEDRAL 9 G PLAG 40 .25X.025SUBHEDRAL LATHS 10 G CPX 35 .4X.04ANHEDRAL 11 G MAGN 4 .015X.015SKELETAL 12 G GLASS 5 13 G % REPLACED BY SMECTITE; 14 G COMBINE 15 15 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 16 A SMECTITE OLIVINE,GLASS 17 A % BROWN-GREEN* 18 V 1.2X.7 10 SMEC IRREGULAR 19 V % MIAROLITIC VOIDS,PARTLY FILLED BY SMEC* 20 70504B 48 1 900 920 647.00 647.91 SDR U PCE 869 10 1 S RT BASALT BRECCIA; 2 S TEX LITHIC FRAGMENTS ARE GLASSY-VARIOLITIC; 3 S WS GLASSY MARGIN* 4 P OL <1 .5X.5SUBHEDRAL-EUHEDRAL 5 P PLAG 5 1-.5LATHY 6 P CPX <1 .5X.5SUBHEDRAL-ANHEDRAL 7 G GLASS 95 8 A SMECTITE 9 A % MATRIX-REPLACES ORIGINAL MATRIX+GLASSY FRAGMENTS* 10 70504B 48 2 750 780 647.00 649.27 LAV I PCE 884 20 1 S RT PLAG-CPX-OL MODERATELY PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, FINE GRAINED,PHYRIC; 3 S WS NEXT TO GLASSY MARGIN* 4 P OL 1 1.0X.5EUHEDRAL 5 P % COMPLETELY REPLACED BY SMEC + UNKNOWN (NOW=HOLE); 6 P PLAG 2 .9X.7SUBHEDRAL LATHS 7 P % CORNERS ARE ROUND; 8 P CPX 1 1.3X.6SUBHEDRAL ELONGATED LATHS 9 P % CORNERS ARE ROUND* 10 G OL 2 .02X.03EUHEDRAL 11 G OL 2 .4X.3EUHEDRAL 12 G % UNEQUAL SIZES, COMPLETELY REPLACED BY GREEN SMEC; 13 G PLAG 40 .12X.01MICROLITES 14 G CPX 17 .05X.04ANHEDRAL 15 G MAGN 5 .01SKELETAL 16 G COMBINE 30 17 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 18 A SMECTITE OLIVINE 19 V 0 20 70504B 48 3 820 850 647.00 650.84 SDR I PCE 902 14 1 S RT PLAG PHYRIC BASALT; 2 S TEX MEDIUM GRAINED PHYRIC, SUB-OPHITIC-INTERSERTAL 3 S WITH PATCHES OF HYALO-OPHITIC; 4 S WS FLOW INTERIOR* 5 P OL <<1 SUBHEDRAL 6 P % ALTERED; 7 P PLAG 15 1X.8EQUANT-BLOCKY 8 G PLAG 25-30 .5X.08SKELETAL 9 G CPX 25-30 .3X.3EUHEDRAL 10 G MAGN 5-8 SKELETAL 11 G GLASS 25 12 G % GLASS SEEN AS QUENCH TEXTURES* 13 A CLAYS 5-10 GLASS,OLIVINE 14 70504B 48 3 850 860 647.00 650.85 SDR I PCE 903 10 1 S RT APHYRIC BASALT 2 S TEX HYALO-OPHITIC, FINE-MEDIUM GRAINED,APHYRIC, 3 S VARIOLITIC PATCHES; 4 S WS NEXT TO GLASSY MARGIN* 5 G OL 10 .1X.1 6 G PLAG 25 .7X.05 7 G GLASS 65 8 G % SEEN AS VARIOLITES* 9 A SMECTITE 10SCATTERED GLASS POCKETS 10 70504B 48 4 140 160 647.00 651.65 SDR I PCE 910 11 1 S RT PLAG-CPX PHYRIC BASALT; 2 S TEX FINE GRAINED,PHYRIC, VARIOLITIC; 3 S WS GLASSY MARGIN* 4 P PLAG 20 1.5X.7EQUANT 5 P CPX <1 1.5X1.5BLOCKY LATHS 6 P % PLAG AND CPX ARE FRESH* 7 G MAGN <5 8 G GLASS 80 9 G % SEEN AS VARIOLITES* 10 V 0 11 70504B 49 3 50 70 656.00 659.06 SDR I PCE 952 16 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX VARIOLITIC,HYALOPILITIC PATCHES,FINE-GRAINED, 3 S PHYRIC; 4 S WS GLASSY MARGIN AND NEXT TO GLASSY MARGIN* 5 P OL 1 .2X.2EUHEDRAL 6 P % ALTERED TO SMECTITE; 7 P PLAG 10 1X.3 8 G OL 10 .1X.1ANHEDRAL GRAINS 9 G PLAG 20 .4X.03SKELETAL LATHS 10 G MAGN <5 11 G GLASS 65 12 G % SEEN IN VARIOLITES AND SHEAF TEXTURES* 13 A SMEC 5-10SCATTERED OLIVINE,GLASS 14 A % BROWN* 15 V 0 16 70504B 51 1 720 740 669.50 670.23 LAV I PCE 980 22 1 S RT OL-PLAG-CPX MODERATELY PHYRIC BASALT; 2 S TEX OPHITIC-INTERSERTAL,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 4 .7X.4EUHEDRAL 5 P % COMPLETELY REPLACED BY GREEN SMECTITE AND POSSIBLY 6 P % TALC; 7 P PLAG 4 1.5X.5SUBHEDRAL LATHS 8 P CPX 1 1.2X.5ANHEDRAL 9 G OL 13 .1X.08EUHEDRAL 10 G PLAG 35 .3X.03SUBHEDRAL LATHS 11 G CPX 30 .08X.08ANHEDRAL 12 G % FOR PLAG+OL+CPX ALL THE SIZES OCCUR BETWEEN THESE 13 G % AND THE PHENOS; 14 G MAGN 5 .04X.04SKELETAL 15 G % IN GLASSY AREAS; 16 G GLASS 8 17 G % REPLACED BY GREEN SMECTITE* 18 A SMECTITE OLIVINE,GLASS 19 A % GREEN; 20 A TALC OLIVINE 21 V 0 22 70504B 52 213201340 678.50 681.33 LAV I PCE 1021 26 1 S RT PLAG-CPX PHYRIC BASALT; 2 S TEX OPHITIC-INTERSERTAL,PHYRIC; 3 S WS FLOW INTERIOR* 4 P PLAG 7 1.2X.2SUBHEDRAL LATHS 5 P % THESE CRYSTALS ARE GATHERED IN CLUSTERS (6.0X5.0), 6 P % ONE CRYSTAL HAS THE SIZE OF 5.0X2.0 IN THIS 7 P % SECTION; 8 P CPX 2 1.6X.6ANHEDRAL 9 P % INTERGROWN WITH PLAG LATHS* 10 G OL 5 .2X.3 11 G % IDENTITY UNCERTAIN FOR OLIVINE, 12 G % IF OLIVINE OCCURS IT IS COMPLETELY REPLACED BY 13 G % GREEN SMECTITE AS THE GLASS, AND IT IS ANHEDRAL 14 G % SO THAT IT IS NOT POSSIBLE TO DISTINGUISH IT; 15 G PLAG 38 .3X.02SUBHEDRAL LATHS 16 G CPX 37 .3X.25ANHEDRAL 17 G % INTERGROWN WITH PLAG LATHS; 18 G MAGN 4 .08X.06SKELETAL 19 G % IN GLASSY AREAS CHIEFLY; 20 G GLASS 7 21 G % REPLACED BY GREEN SMECTITE* 22 A SMECTITE GLASS,OLIVINE 23 A % GREEN,ID UNCERTAIN FOR OL* 24 V 2 25 V % EXISTENCE OF VESICLES UNCERTAIN* 26 70504B 54 1 620 640 692.00 692.63 LAV I PCE 1065 17 1 S RT APHYRIC BASALT; 2 S TEX HYALOPILITIC, APHYRIC; 3 S WS NEXT TO GLASSY MARGIN; 4 S % UNCERTAIN ON LOCATION OF SAMPLING* 5 G OL 3 .25X.20SUBHEDRAL 6 G % REPLACED BY GREEN SMECTITE; 7 G PLAG 10 .5X.08LATHS 8 G PLAG .3X.01MICROLITES 9 G CPX 5 .03X.03ANHEDRAL 10 G % ALSO FOUND IN SIZE OF .25X.08; 11 G MAGN 2 .01X.01SKELETAL 12 G % SCATTERED MATURE SHEAFS; 13 G COMBINE 80 14 G % CONTAINS PYX + PLAG, MATURE SHEAF TEXTURE* 15 A SMECTITE OLIVINE 16 A % GREEN* 17 70504B 54 1 910 940 692.00 692.92 LAV I PCE 1068 16 1 S RT APHYRIC BASALT; 2 S TEX APHYRIC,VESICULAR, HYALO-OPHITIC-HYALOPILITIC; 3 S WS NEXT TO GLASSY MARGIN* 4 G OL 5 G % IDENTITY UNCERTAIN FOR OL; 6 G % REPLACED BY POSSIBLY SMECTITE; 7 G PLAG 12 .4X.03LATHS 8 G CPX 8 .05X.04 9 G MAGN 3 .02X.01SKELETAL 10 G COMBINE 76 11 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 12 A SMECTITE VESICLES OLIVINE 13 A % ID UNCERTAIN FOR OL* 14 V .12 5RIM SMECTITE ROUND 15 V % CORE OF FILLING = HOLE* 16 70504B 57 1 400 420 714.50 714.91 LAV I PCE 1130 17 1 S RT APHYRIC BASALT; 2 S TEX MEDIUM GRAINED,VESICULAR,APHYRIC, 3 S HYALO-OPHITIC-HYALOPILITIC; 4 S WS FLOW INTERIOR* 5 G OL 3 SUBHEDRAL TO ANHEDRAL 6 G % IDENTITY UNCERTAIN FOR OL, REPLACED BY SMECTITE; 7 G PLAG 35 .25X.015MICROLITES 8 G CPX 32 .08X.08ANHEDRAL 9 G MAGN 4 >.02X.02SKELETAL 10 G GLASS 8 11 G % REPLACED BY GREEN-BROWN SMECTITE; 12 G COMBINE 15 13 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 14 A SMECTITE GLASS 15 A % GREEN-BROWN,ALSO FILLING VESICLES* 16 V .3 3SCATTERED SMECTITE,EMPTY ROUND 17 70504B 57 311201140 714.50 718.63 LAV I PCE 1178 19 1 S RT OL SPARSELY PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED, 3 S SUBOPHITIC-INTERGRANULAR, 4 S % SUBINTERSERTAL SINCE SOME GLASS OCCURS; 5 S WS FLOW INTERIOR* 6 P OL 2 1.2X.8SUBHEDRAL 7 P % COMPLETELY REPLACED BY PALE GREEN SMECTITE, RARE 8 P % BRIGHT GREEN SMECTITE AND A HOLE FROM THIN SECTION 9 P % FABRICATION* 10 G OL 7 .25X.25SUBHEDRAL 11 G % COMPLETELY REPLACED BY GREEN SMECTITE; 12 G PLAG 40 .4X.02LATHS 13 G CPX 42 .35X.30ANHEDRAL OR SUBHEDRAL 14 G MAGN 3 .04X.04SKELETAL 15 G GLASS 7 16 G % REPLACED BY SMECTITE* 17 A SMECTITE OLIVINE,GLASS 18 V 0 19 70504B 58 2 250 270 723.50 725.26 LAV I PCE 1208 13 1 S RT PLAG-CPX-OL PHYRIC BASALT; 2 S TEX OPHITIC-INTERGRANULAR,PHYRIC; 3 S WS FLOW INTERIOR* 4 P OL 5 P % IDENTITY UNCERTAIN FOR OL, IF IT OCCURS IT IS 6 P % REPLACED BY SMECTITE; 7 P PLAG 35 .25X.02SUBHEDRAL LATH 8 P CPX 37 .15X.15ANHEDRAL 9 P MAGN 5 .04X.04SKELETAL 10 P GLASS 3 11 P % REPLACED BY GREEN SMECTITE* 12 A SMECTITE GLASS,OLIVINE 13 70504B 58 3 970 990 723.50 727.48 LAV I PCE 1235 18 1 S RT PLAG-CPX-OL PHYRIC BASALT; 2 S TEX COARSE GRAINED, SUBOPHITIC; 3 S WS FLOW INTERIOR* 4 P OL <1 .8X.4EUHEDRAL 5 P % COMPLETELY REPLACED BY SMECTITE; 6 P PLAG 8 1.1X.5SUBHEDRAL TO ANHEDRAL 7 P CPX 8 1.8X1.0SUBHEDRAL TO ANHEDRAL 8 G OL 7 .2X.15SUBHEDRAL 9 G % COMPLETELY REPLACED BY SMECTITE, ALL RANGES OF 10 G % SIZES BETWEEN THIS AND THE PHENOS; 11 G PLAG 32 .25X.03LATHS 12 G CPX 35 .2X.2ANHEDRAL 13 G MAGN 4 .06X.05SKELETAL 14 G GLASS 6 15 G % REPLACED BY SMECTITE* 16 A SMECTITE GLASS,OLIVINE 17 V 0 18 70504B 60 1 480 500 741.50 741.99 LAV I PCE 1260 14 1 S RT APHYRIC BASALT; 2 S TEX MEDIUM GRAINED, INTERGRANULAR-INTERSERTAL; 3 S WS FLOW INTERIOR* 4 G OL 10 .4X.25EUHEDRAL 5 G % COMPLETELY REPLACED BY GREEN SMECTITE; 6 G PLAG 38 .35X.03LATHS 7 G CPX 37 .16X.16ANHEDRAL 8 G MAGN 5 .08X.08SKELETAL 9 G GLASS 10 10 G % REPLACED BY GREEN SMECTITE* 11 A SMECTITE GLASS,OLIVINE 12 A % GREEN* 13 V 0 14 70504B 60 2 410 440 741.50 743.42 LAV I PCE 1275 28 1 S RT OL-PLAG PHYRIC BASALT; 2 S TEX MEDIUM GRAINED,SUBGLOMEROPHYRIC, HYALO-OPHITIC- 3 S % HYALOPILITIC,PHYRIC; 4 S WS FLOW INTERIOR* 5 P OL 8 1.6X1.0EUHEDRAL 6 P % COMPLETELY REPLACED BY YELLOW GREEN SMECTITE AND 7 P % POSSIBLY TALC; 8 P PLAG 8 .4X.1SUBHEDRAL LATHS 9 P % GATHERED IN CLUMPS* 10 G OL 7 .04X.04SUBHEDRAL 11 G % COMPLETELY REPLACED BY YELLOW-GREEN SMECTITE; 12 G % ALL THE RANGES OF SIZE BETWEEN THIS AND THE 13 G % PHENOS; 14 G PLAG 15 .2X.02MICROLITES 15 G CPX 15 .03X.03ANHEDRAL 16 G MAGN 5 .01X.01SKELETAL 17 G GLASS 18 G % REPLACED BY YELLOW GREEN SMECTITE; 19 G COMBINE 42 20 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 21 A SMECTITE OLIVINE 22 A % YELLOW GREEN; 23 A SMECTITE 24 A % BLUE GREEN, ASSOCIATED WITH YELLOW-GREEN SMECTITE 25 A % AND PARTLY FILLING A CRACK, THIS "NEW" TYPE OF 26 A % SMECTITE OCCURS ALSO AS A REPLACEMENT OF GLASS, 27 A % BUT IT IS RARE* 28 70504B 63 3 300 330 764.00 767.32 LAV I PCE 1360 25 1 S RT PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX MEDIUM GRAINED, HYALO-OPHITIC; 3 S WS FLOW INTERIOR* 4 P OL 2 1.0X.5EUHEDRAL 5 P % PARTLY REPLACED BY GREEN SMECTITE AND TALC, 6 P % THE CORE OF THE PHENOS ARE STILL FRESH OLIVINE + 7 P % OPAQUES; 8 P PLAG 5 1.3X.4SUBHEDRAL LATHS 9 P % SOMETIMES ZONED OFTEN IN CLUSTERS* 10 G OL 4 .06X.3SUBHEDRAL 11 G % REPLACED BY GREEN AND PALE GREEN SMECTITE; 12 G PLAG 10 .02X.2MICROLITES 13 G CPX 5 .06X.06ANHEDRAL 14 G MAGN 6 .04X.04SKELETAL 15 G GLASS 8 16 G % REPLACED BY GREEN SMECTITE; 17 G COMBINE 58 18 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 19 A SMECTITE GLASS,OLIVINE 20 A % GREEN; 21 A TALC OLIVINE 22 A OP.MINS OLIVINE 23 V 2SCATTERED GREEN SMECTITE IRREGULAR 24 V % MIAROLITIC VOIDS* 25 70504B 63 4 450 480 764.00 768.97 LAV I PCE 1395 22 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX MEDIUM TO COARSE GRAINED, SUBOPHITIC- 3 S INTERSERTAL,PHYRIC; 4 S WS FLOW INTERIOR* 5 P OL 6 .6X.2EUHEDRAL 6 P % COMPLETELY REPLACED BY GREEN SMECTITE, COLORLESS, 7 P % SMECTITE AND POSSIBLY A LITTLE TALC; 8 P PLAG 8 1.2X.6SUBHEDRAL LATHS 9 G PLAG 38 .12X.02LATH 10 G CPX 37 .12X.1ANHEDRAL 11 G MAGN 4 .02X.02SKELETAL OR LONG CRYSTALS 12 G % IN GLASSY AREAS; 13 G GLASS 3 14 G % REPLACED BY GREEN SMECTITE* 15 A SMECTITE OLIVINE,GLASS 16 A % GREEN; 17 A SMECTITE OLIVINE 18 A % COLORLESS; 19 A TALC OLIVINE 20 V .8X.2 5 SMECTITE IRREGULAR 21 V % MIAROLITIC VOIDS,SMECTITE IS GREEN* 22 70504B 63 4 600 610 764.00 769.10 LAV I PCE 1400 24 1 S RT PLAG-OL PHYRIC BASALT; 2 S TEX HYALO-OPHITIC, MEDIUM GRAINED,PHYRIC; 3 S WS NEXT TO GLASSY MARGIN* 4 P OL 5 .6X.5EUHEDRAL 5 P % PARTLY REPLACED BY GREEN AND COLORLESS SMECTITE + 6 P % OPAQUES; 7 P PLAG 12 4X2ROUNDED OR EUHEDRAL LATHS 8 P % OFTEN ZONED, ROUNDED LATHS ARE RESORBED; 9 P PLAG 1.5X.5SUBHEDRAL LATHS 10 G OL 15 .1X.1SUBHEDRAL 11 G % COMPLETELY REPLACED BY GREEN AND COLORLESS SMEC; 12 G PLAG 25 .4X.01MICROLITES 13 G CPX 15 .06X.06ANHEDRAL 14 G MAGN 8 .03X.03SKELETAL 15 G GLASS 10 16 G % REPLACED BY DIRTY GREEN SMECTITE; 17 G COMBINE 10 18 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 19 A SMECTITE GLASS,OLIVINE 20 A % GREEN; 21 A SMECTITE OLIVINE 22 A % COLORLESS* 23 V 0 24 70504B 64 212901310 773.00 775.80 LAV I PCE 1437 20 1 S RT APHYRIC BASALT; 2 S TEX HYALOPILITIC-HYALO-OPHITIC, FINE GRAINED; 3 S WS FLOW INTERIOR OR POSSIBLY NEXT TO GLASSY MARGIN* 4 G OL <2 .3X.15SUBHEDRAL 5 G % REPLACED BY DARK GREEN SMECTITE AND POSSIBLY TINY 6 G % OPAQUES; 7 G PLAG 10 .32X.02LATH 8 G PLAG .12X.10LATH 9 G CPX 10 .1X.08ANHEDRAL 10 G MAGN 6 .02X.02SKELETAL 11 G % GATHERED BETWEEN THE DIFFERENT "SHEAFS" OF THE 12 G % GROUNDMASS; 13 G GLASS 5 14 G % REPLACED BY DIRTY GREEN SMECTITE; 15 G COMBINE 67 16 G % INCLUDES PYX + PLAG, VERY MATURE SHEAF TEXTURE* 17 A SMECTITE GLASS,OLIVINE 18 A % DIRTY GREEN* 19 V 0 20 70504B 64 4 510 530 773.00 778.02 LAV I PCE 1465 18 1 S RT PLAG-PYX PHYRIC BASALT; 2 S TEX COARSE GRAINED,PHYRIC, SUBOPHITIC-INTERSERTAL; 3 S WS FLOW INTERIOR* 4 P PLAG 6 1.2X.5 5 P CPX 6 1.2X.8ANHEDRAL 6 G OL 2 .3X.08EUHEDRAL 7 G % COMPLETELY REPLACED BY GREEN SMECTITE; 8 G PLAG 35 .4X.04SUBHEDRAL LATHS 9 G CPX 32 .2X.2ANHEDRAL 10 G MAGN 4 .05X.04SKELETAL, OR LONG CRYSTAL 11 G % IN GLASSY AREAS; 12 G GLASS 15 13 G % REPLACED BY GREEN SMECTITE, AND LOCATED IN SOME 14 G % AREAS* 15 A SMECTITE GLASS,OLIVINE 16 A % GREEN* 17 V 0 18 70504B 64 412301250 773.00 778.74 LAV I PCE 1471 22 1 S RT PLAG-OL-CPX PHYRIC BASALT; 2 S TEX MEDIUM GRAINED,HYALO-OPHITIC-HYALOPILITIC, 3 S SUBGLOMEROPHYRIC; 4 S WS FLOW INTERIOR* 5 P OL 4 .7X.5EUHEDRAL 6 P % REPLACED BY GREEN AND COLORLESS SMECTITE; 7 P PLAG 6 1.2X.4EUHEDRAL LATHS 8 P CPX 1 2.0X.5SUBHEDRAL 9 G OL 3 .01X.01SUBHEDRAL 10 G % REPLACED BY GREEN SMECTITE; 11 G PLAG 6 .25X.01MICROLITES 12 G CPX 3 .06X.05ANHEDRAL 13 G MAGN 4 .01X.01SKELETAL 14 G COMBINE 73 15 G % INCLUDES PYX + PLAG, MATURE SHEAF TEXTURE* 16 A SMECTITE OLIVINE 17 A % GREEN AND COLORLESS* 18 V 0 19 V % THICK (6MM) VEIN FILLED WITH WHITE TINY CRYSTALS 20 V % RADIATED OF ZEOLITE + GREEN SMECTITE + ANOTHER 21 V % MINERAL (UNDETERMINABLE BECAUSE TOO THICK)* 22 70504B 66 1 9801000 791.00 791.99 LAV I PCE 1500 18 1 S RT CPX-PLAG-OL MODERATELY PHYRIC BASALT; 2 S TEX FINE TO MEDIUM GRAINED PHYRIC, HYALO-OPHITIC- 3 S HYALOPILITIC,SUBVARIOLITIC; 4 S WS NEXT TO GLASSY MARGIN* 5 P OL 1 .30X.2EUHEDRAL 6 P % COMPLETELY REPLACED BY GREEN AND COLORLESS SMEC; 7 P PLAG 3 1.2X.25EUHEDRAL LATHS 8 P CPX 4 3X1WIDE LATHS, ROUNDED CORNERS 9 G PLAG 7 .12X.01MICROLITES 10 G CPX 2 .04X.04ANHEDRAL 11 G MAGN 3 <<.008 12 G COMBINE 80 13 G % INCLUDES PYX + PLAG, SUBVARIOLITIC TO IMMATURE 14 G % SHEAF TEXTURE* 15 A SMECTITE OLIVINE 16 A % GREEN AND COLORLESS* 17 V 0 18 70504B 66 2 710 730 791.00 793.22 LAV I PCE 1515 16 1 S RT APHYRIC BASALT; 2 S TEX MEDIUM GRAINED,APHYRIC, SUBOPHITIC-INTERSERTAL; 3 S WS FLOW INTERIOR* 4 G OL 4 .16X.16SUBHEDRAL 5 G % COMPLETELY REPLACED BY DIRTY GREEN SMECTITE; 6 G PLAG 40 .3X.02SUBHEDRAL LATHS 7 G CPX 40 .25X.25ANHEDRAL 8 G % PLAG AND CPX ARRANGED IN A SUBOPHITIC TEXTURE; 9 G MAGN 6 .08X.08SKELETAL 10 G % CHIEFLY IN GLASSY AREAS; 11 G GLASS 10 12 G % REPLACED BY DIRTY GREEN SMECTITE* 13 A SMECTITE GLASS,OLIVINE 14 A % DIRTY GREEN* 15 V 0 16 70504B 67 1 550 600 800.00 800.58 LAV I PCE 1528 20 1 S RT OL-CPX SPARSELY PHYRIC BASALT; 2 S TEX FINE TO MEDIUM GRAINED PHYRIC, HYALOPILITIC- 3 S HYALO-OPHITIC; 4 S WS NEXT TO GLASSY MARGIN* 5 P OL <1 .6X.4EUHEDRAL 6 P % COMPLETELY REPLACED BY DIRTY GREEN SMECTITE; 7 P CPX <1 .5X.3SUBHEDRAL 8 G PLAG 14 .6X.02MICROLITES 9 G % ISOLATED IN THE GROUNDMASS AND ASSOCIATED WITH 10 G % CPX; 11 G CPX 7 .2X.2ANHEDRAL 12 G MAGN 4 .01X.01SKELETAL 13 G GLASS 5 14 G % REPLACED BY GREEN SMECTITE; 15 G COMBINE 70 16 G % INCLUDES PYX + PLAG, IMMATURE TO MATURE SHEAF TEX* 17 A SMECTITE OLIVINE,GLASS 18 A % DIRTY GREEN* 19 V 0 20 70504B 69 1 660 680 818.00 818.67 LAV I PCE 1544 11 1 S RT APHYRIC BASALT; 2 S TEX MEDIUM GRAINED,APHYRIC, SUBOPHITIC-INTERSERTAL; 3 S WS FLOW INTERIOR* 4 G PLAG 40 .2X.03LATH 5 G CPX 40 .12X.1ANHEDRAL 6 G MAGN 10 .04X.04SKELETAL 7 G GLASS 10 8 G % REPLACED BY GREEN SMECTITE* 9 A SMECTITE GLASS 10 V 0 11 70504B 70 1 930 940 827.00 827.94 LAV I PCE 1558 19 1 S RT PLAG-OL-CPX MODERATELY PHYRIC BASALT; 2 S TEX FINE TO MEDIUM GRAINED,PHYRIC, INTERGRANULAR; 3 S WS FLOW INTERIOR* 4 P OL 1 .65X.6EUHEDRAL 5 P % PARTLY REPLACED BY GREEN SMECTITE; 6 P PLAG 3 .8X.5EUHEDRAL LATHS 7 P CPX 1 .4X.4SUBHEDRAL 8 G OL 14 .08X.08SUBHEDRAL 9 G % REPLACED BY SMECTITE (DIRTY GREEN); 10 G PLAG 40 .16X.02MICROLITES 11 G CPX 35 .04X.04ANHEDRAL 12 G % THE ARANGEMENT OF THE PLAG AND CPX CRYSTALS COULD 13 G % BE SAID "EXTREMELY MATURE SHEAF TEXTURE"; 14 G MAGN 3 .02X.02SKELETAL 15 G GLASS 3 16 G % IDENTITY UNCERTAIN FOR GLASS, REPLACED BY SMEC* 17 A SMECTITE GLASS,CHLORITE 18 V 0 19 70504B 70 2 160 180 827.00 828.67 LAV I PCE 1564 17 1 S RT MASSIVE BASALT; 2 S TEX COARSE GRAINED,OPHITIC, WITH SOME GLASSY AREAS; 3 S WS FLOW INTERIOR* 4 P OL 8 2.0X1.8SUBHEDRAL 5 P % COMPLETELY REPLACED BY DIRTY GREEN SMECTITE; 6 P PLAG 40 1.2X.35EUHEDRAL LATHS 7 P PLAG .4X.06EUHEDRAL LATHS 8 P CPX 40 1X.8ANHEDRAL 9 P % PLAG AND CPX ARE BOTH OPHITIC TEXTURES* 10 G MAGN 5 .08X.08SKELETAL (OR MICROLITES) 11 G % IN GLASSY AREAS; 12 G GLASS 7 13 G % REPLACED BY DIRTY GREEN SMECTITE* 14 A SMECTITE GLASS,OLIVINE 15 A % GREEN* 16 V 0 17