84567A 7 2 400 410 253.10 255.01 HELM M 16 1 S RT SERPENTINITE; 2 S TEX SERPENTINITE MESH, RIBBON 3 S % TEXTURE EXHIBITS ONLY SMALL SHEARING RATE, SOME 4 S % TRACES OF MANTLE TEXTURE PRESERVED, ORIGINAL 5 S % ROCK MINERALS 100 PERCENT ALTERED; 6 S WS SERPENTINITE CLAST* 7 P OPX 5 1IDIOMORPHIC 8 P % PSEUDOMORPH LIZARDITE (BASTITE), PRESERVED MANTLE 9 P % TEXTURES* 10 G MAGN 15SCATTERED 11 G % ID UNCERTAIN, NEW FORMED, BYPRODUCT OF SERP; 12 A SERP 80 13 A % YOUNGER CROSS-CUTTING CHRYSOTILE VEINS, POSSIBLY 14 A % REPLACING OL+PYX+OPX, COMPLETE REPLACING OF ROCK, 15 A % NEW TEXTURE* 16 84567A 10 2 0 0 280.70 282.20 HELM I 14 1 S RT PLAG PHYRIC BASALT 2 S % ID UNCERTAIN; 3 S TEX GLOMEROPHYRIC; 4 S WS CLAST IN CONGLOMERATE SLUMP MASSES* 5 P PLAG 40 0.2-3SUBHEDRAL 6 P % STRONGLY ALTERED; 7 P CPX TR 8 P % ID UNCERTAIN* 9 G GLASS 60 10 G % 100 PERCENT ALTERED TO CLAY+OP.MINS, INCLUDED 11 G % MAGN+HEMATITE+CLAY+CALCITE+CHLORITE+PREHNITE* 12 A COMBINE 70 13 A % INCLUDES CARB+CLAYS+ZEOLITES+OTHERS* 14 84567A 10 211501160 280.70 283.36 OGA I 15 1 S RT BASALTIC ANDESITE 2 S % CONSIDERABLY ALTERED, MAY BE LAVA XENOLITH FROM 3 S % CONTINENTAL VOLCANO, PEBBLE 80MM* 4 P PLAG 5 P % LABRADORITE* 6 G CPX 7 G % MOSTLY ALTERED TO CLAY.MINS, ID OF CLAY.MINS 8 G % UNCERTAIN, MAX EXTINCTION ANGLE 37; 9 G PLAG 10 G % ANDESITE, MAX EXTINCTION ANGLE 23; 11 G OP.MINS 30 12 G % RICH IN THESE MINERALS* 13 A CLAY CPX 14 A % CPX IS MOSTLY ALTERED TO UNIDENT CLAY.MINS* 15 84567A 13 2 460 480 307.30 309.27 OGA S 15 1 S RT SANDSTONE 2 S % EQUIGRANULAR, ROUNDED TO SUBROUNDED INCLUDING SOME 3 S % ANGULAR ONES, WELL-SORTED, AVERAGE .1MM, CALCITE 4 S % CEMENTED QUARTZ-FELDSPAR COMMON LITHIC SANDSTONE, 5 S % CALCITE CEMENT EXCEED 20 PERCENT, GRAINS ARE MORE 6 S % OR LESS ALTERED TO CLAY.MINS AND REPLACED BY 7 S % CALCITE, FELDSPARS ARE MOSTLY PLAG ANDESINE TO 8 S % LABRADORITE, A FEW ALKALI-FELDSPARS INCLUDED, 9 S % FELDSPAR AND QUARTZ HAVE WAVY EXTINCITON, HEAVY 10 S % MINERALS ARE GREEN-BROWN HORNBLENDE+CPX+ZIRCON, 11 S % GLAUCONITE COMMON, A FEW DISTINCT SERPENTINE 12 S % INCLUDED, LITHIC FRAGMENTS ARE NOT CRITICALLY 13 S % EXAMINED BUT MOST ARE VOLCANIC, ID UNCERTAIN, 14 S % Q-F-R CONTENT IS ESTIMATED 10-20-70* 15 84567A 14 21370 0 316.20 319.07 HELM M 12 1 S RT SERPENTINITE 2 S % BAD THIN SECTION; 3 S WS FROM MASSIVE SERPENTINITE CORE* 4 P PLAG 0 5 P SPINEL 3 6 P % CHROMITE; 7 P OPX 10 1-2 8 P % WEATHERED SERPENTINITE* 9 A CARB 5 10 A SERP 77 11 A TALC 5 12 84567A 14 214201450 316.20 319.14 HELM M 18 1 S RT SERPENTINITE; 2 S TEX BASTITE STRUCTURE* 3 P OPX 70 0.5-3EUHEDRAL TO SUBHEDRAL 4 P % ID UNCERTAIN, COMPLETELY ALTERED TO BASTITES, SHOW 5 P % STRONG SHEARING, 6 P % MANTLE OPX THEN STRONG SHEARING PORPHYROCLASTIC, 7 P % ALSO PLATY SERPENTINITE RECRYSTALLIZATION, 8 P % METAMORPHIC SERPENTINITE* 9 P CHROMITE 3 1EUHEDRAL TO SUBHEDRAL 10 P % STONGLY ALTERED* 11 G MAGN 5 12 G % REPLACING PART CHROMITE AND/OR FROM 13 G % SERPENTINIZATION* 14 A TALC 10ONLY IN VEINS 15 A SERP 12SERP MESH 16 A % POSSIBLY REPLACING OL, METASOMATIC BUT FROM ROCK 17 A % ITSELF* 18 84567A 19CC 0 0 358.70 360.10 BELL I 15 1 S RT OL-CPX PHYRIC BASALT 2 S % SOURCE IS INITIAL REPORTS; 3 S TEX PHYRIC, MICROLITIC GROUNDMASS* 4 P OL 5 P % ALTERED; 6 P CPX 7 P % FRESH, CALCIC* 8 G PLAG 9 G CPX 10 G TI.MAG 11 G GLASS 12 G % RESIDUAL, ALTERED* 13 A CHLORITE GLASS 14 A CALCITE GLASS 15 84567A 19CC 0 0 358.70 360.10 HELM I 14 1 S RT DOLERITE; 2 S TEX OPHITIC; 3 S WS CLAST IN CORE CATCHER* 4 P PLAG 60 0.1-0.5LATHS 5 P % ALTERED; 6 P SPINEL 3 0.2-0.3 7 G CPX 20 0.2-0.4ANHEDRAL 8 G % APPROX COMP DIOPSIDIC PYROXENE, FILLING OF PLAG 9 G % MESH; 10 G QUARTZ 10 ANHEDRAL 11 G % POSSIBLY SECONDARY* 12 A CARB 3SCATTERED EVERY OTHER MINERAL 13 A CLAY 4SCATTERED EVERY OTHER MINERAL 14 84567A 20 1 9901010 376.40 377.40 HELM I PCE 1 22 1 S RT GABBRO 2 S % META-GABBRO POSSIBLY; 3 S TEX HYPIDIOMORPHIC, GRANULAR; 4 S WS SAMPLE CORED FROM GABBRO VEIN* 5 P PLAG 1 0.3-0.4EUHEDRAL 6 P % APPROX COMP BASIC, ALMOST COMPLETELY ALTERED; 7 P CPX 10 0.3-0.8EUHEDRAL 8 P % APPROX COMP AUGITE, ALMOST COMPLETELY ALTERED, 9 P % ACTINOLITE+TREMOLITE, ACTINOLITE EXHIBITS 10 P % PORPHYROCLASTIC TEXTURES WHEN DEFORMED* 11 G CHALC TR 12 G % SECONDARY* 13 A CARB 2VEINS, GROUNDMASS 14 A GROUNDMASS 15 A CLAY 42GROUNDMASS 16 A % MORE OR LESS OPAQUE; 17 A ZEOLITE 1 18 A % OPAQUE, SECONDARY; 19 A OTHER 25 20 A % EUHEDRAL XTLS, POSSIBLY REPLACING OPX ALSO, 21 A % PARTLY TREMOLITE* 22 84567A 20 111301150 376.40 377.54 HELM I PCE 2 17 1 S RT GABBRO 2 S % THIN SECTION IS BAD; 3 S TEX HYPIDIOMORPHIC-GRANULAR; 4 S WS CORE DRILLED FROM GABBRO SHEET* 5 P PLAG 30 TO 5HYPIDIOMORPHIC 6 P % APPROX COMP BASIC, STRONGLY ALTERED; 7 P CPX 10 8 G QUARTZ 10 9 G % FILLS SECONDARY VEINS* 10 A CHLORITE 10IN UNSHEAVED PLAG,CPX 11 A VEINS 12 A COMBINE 15 13 A % INCLUDES CLAY+ZEOLITES; 14 A ACTINOL 25SCATTERED IN CPX 15 A GROUNDMASS 16 A % GREENSCHIST METAMOPHOSED GABBRO* 17 84567A 20 111301150 376.40 377.54 OGA I PCE 2 13 1 S RT META-GABBRO; 2 S TEX ALLOTRIOMORPHIC-GRANULAR 3 S % FRACTURE, GRANULIZATION COMMON; 4 P PLAG 55 1GRANULAR 5 P CPX 15 0.5GRANULAR 6 P OPX 30 0.8GRANULAR 7 P % NOW ACTINOLITE* 8 A CARB 2SPOTS PLAG 9 A % STRONG ALTERATION; 10 A CLAY 10 OPX,CPX 11 A % STRONG ALTERATION, IN GENERAL GREENSCHIST FACIES 12 A % ALTERATION, METAMORPHISM* 13 84567A 20 114001420 376.40 377.81 HELM I PCE 8 14 1 S RT DOLERITE 2 S % DIABASE, UNCERTAIN ABOUT SAMPLE DEPTH; 3 S TEX OPHITIC, MICROLITIC; 4 S WS SAMPLE CORED FROM IGNEOUS* 5 P PLAG 30 0.15RADIATING, NEEDLE-LIKE 6 P % APPROX COMP ALBITE, ALTERATION OF BASE PLAG* 7 G QUARTZ 5 8 G % FOUND IN VEINS AND SCATTERED IN GROUNDMASS* 9 A CLAY 40 GROUNDMASS 10 A ZEOLITE 5 11 A ACTINOL 25 CPX 12 A % 1MM LARGE XTLS SCATTERED IN GROUNDMASS, CPX ID 13 A % UNCERTAIN* 14 84567A 20 11450 376.40 377.85 HELM I PCE 9 17 1 S RT GABBRO 2 S TEX HYPIDIOMORPHIC GRANULAR 3 S % UNCERTAIN ABOUT SAMPLE DEPTH; 4 S % DEEPER IN OPHIOLITIC SECTION REPLACED GABBRO BUT 5 S % NO OL OR CHROMITE; 6 S WS SAMPLE FROM GABBRO SECTION CORED* 7 P PLAG 50 0.4-1SUBHEDRAL LATHS 8 P % APPROX COMP LABRADORITE; 9 P CPX 5 0.2-0.6SUBHEDRAL 10 P % APPROX COMP AUGITE+UNCERTAIN MINERAL; 11 A CARB TR 12 A CLAY.MIN 5 13 A CHLORITE 10 PLAG, CPX 14 A ACTINOL 30 CPX 15 A % ALTERATION IN TYPICAL GREENSCHIST FACIES FOR 16 A % MOST MINERALS* 17 84567A 21CC 130 150 394.10 394.24 HELM I 15 1 S RT GABBRO; 2 S TEX HYPIDIOMORPHIC-GRANULAR 3 S % VERY HIGHLY ALTERED GABBRO,GREENSCHIST, PERHAPS 4 S % RODINGITISED; 5 S WS CLAST FROM GABBRO SLAB* 6 P PLAG 30 TO 2 7 P % MOD-HIGH ALTERATION, ALTERED TO CHLORITE+ACTINOL, 8 P % APPROX COMP BASIC; 9 P CPX 5 10 A CARB 10VEINS 11 A OTHER 5 PLAG, CPX 12 A % HYDRO GARNET, HYDROG ALTERED; 13 A CHLORITE 20 14 A ACTINOL 30 15 84567A 22CC 0 20 402.90 402.91 HELM I 14 1 S RT BASALT 2 S % ID UNCERTAIN; 3 S TEX VARIOLITIC 4 S % NO PRESERVED PHENOCRYSTS TO OBSERVE; 5 S WS CORE OF GABBRO-DOLERITE* 6 A CARB 10 7 A OP.MINS 10 8 A ZEOLITES 10 9 A PREHNITE 50 10 A % ID UNCERTAIN; 11 A COMBINE 20 12 A % INCLUDES CLAY+CHLORITE, ALL LOW GRADE GREENSCHIST 13 A % ALTERATION* 14 84567A 22CC 0 20 402.90 402.91 OGA I 11 1 S RT SERPENTINITE 2 S % ORIGINALLY HARZBURGITE, MOST MINERALS ARE 3 S % SERPENTINIZED, ORIGINAL MINERAL COMP OL-OPX 4 S % 80-20; 5 S TEX EQUIGRANULAR* 6 G OL 60 7 G CPX 25 8 G % OL AND CPX ALTERED TO SERP; 9 G OP.MIN 15 10 A % MOST MINERALS ARE SERPENTINIZED* 11 84567A 23CC 310 320 411.80 412.53 HELM I 3 1 S RT GABBRO 2 S % SAMPLE NOT USABLE* 3 84567A 25 1 370 400 429.60 429.99 OGA I PCE 4 19 1 S RT BASALT 2 S % BASALTIC LAVA COVERED BY BASALTIC SHALE CONTAINING 3 S % SOME CLASTS AND RADIOLARIAN TESTS, CHERT ANGULAR 4 S % FRAGMENTS ARE INCLUDED; 5 S TEX INTERSERTAL; 6 P PLAG 40 0.3LATH 7 P % APPROX COMP BASIC, INTERSERTAL, PLAG LATHS ARE 8 P % ARRANGED TRACHYTIC TEXTURE BUT MOST ARE CURVED; 9 P CPX 30 0.2 10 P % APPROX COMP AUGITE* 11 G CPX 10 0.05 12 G % APPROX COMP AUGITE; 13 G MAGN 10 0.1 14 G GLASS 10 15 G % ALTERED BY CALCITE* 16 A CARB 17 A % REPLACES GLASS AND PART OF PLAG, ONE PARTICULAR 18 A % VEIN REMARKABLE* 19 84567A 25 2 900 960 429.60 432.03 BELL I 16 1 S RT DOLERITE 2 S % SOURCE IS INITIAL REPORTS; 3 S TEX COARSE-GRAINED* 4 P OL 5 P % ALTERED; 6 P CPX 7 P % FRESH; 8 P PLAG 9 P % FRESH* 10 G PLAG 11 G CPX 12 G TI.MAG 13 G HEMOIL 14 A CHLORITE 15 A CALCITE 16 84567A 25 3 740 780 429.60 433.36 BELL I 16 1 S RT DOLERITE 2 S % SOURCE IS INITIAL REPORTS; 3 S TEX COARSE-GRAINED* 4 P OL 5 P % ALTERED; 6 P CPX 7 P % FRESH; 8 P PLAG 9 P % FRESH* 10 G PLAG 11 G CPX 12 G TI.MAG 13 G HEMOIL 14 A CHLORITE 15 A CALCITE 16 84567A 26 1 30 40 438.50 438.54 BELL I PCE 1 21 1 S RT PLAG-CPX MICROPHYRIC BASALT TO DOLERITE 2 S % SOURCE IS INITIAL REPORTS; 3 S TEX MICROPHYRIC TO FINE-GRAINED 4 S % SHOWS PROGRESSIVE TRANSITION FROM TEXTURE MADE OF 5 S % SKELETAL MICROLITES OF PLAG AND CPX TO ONE 6 S % COMPOSED OF A FINE-GRAINED DOLERITIC TEXTURE; 7 P OL 8 P % ALTERED; 9 P CPX 10 P % FRESH; 11 P PLAG 12 P % FRESH* 13 G PLAG 14 G CPX 15 G TI.MAG 16 G HEMOIL 17 G ALBITE 18 A CHLORITE 19 A CALCITE 20 A CELAD GROUNDMASS 21 84567A 26 11100 0 438.50 439.60 BAL I PCE 15 14 1 S RT GABBRO; 2 S TEX OPHITIC; 3 S WS DRILLED SAMPLE FROM GABBRO* 4 P PLAG 50 5 P % STRONGLY ALTERED; 6 P CPX 15 7 P % MODERATELY ALTERED* 8 A CARB 5 9 A COMBINE 10 10 A % INCLUDES CLAY/CHLORITE; 11 A OP.MINS 5 12 A ACTINOL 15SP IN VEINS CPX,PLAG 13 A % ALL STRONGLY GREENSCHIST ALTERED* 14 84567A 29 214001420 484.60 487.51 BLMR M 13 1 S RT SERPENTINITE 2 S % SOURCE IS INITIAL REPORTS* 3 G SERP 90.7 4 G OP.MINS 5 G % ABUNDANT OPAQUES, INCLUDED WITH SERPENTINE; 6 G BASTITE 8.8 7 G OL 0.0 8 G OPX 0.0 9 G SPINEL 0.3 10 G CPX 0.0 11 G OTHER 0.2 12 G % EXSOLUTION IN BASTITE* 13 84567A 29 214701490 484.60 487.58 BELL I 16 1 S RT BASALT 2 S % SOURCE IS INITIAL REPORTS; 3 S TEX QUENCHED* 4 P OL 5 P % ALTERED; 6 P CPX 7 P % FRESH; 8 P PLAG 9 P % FRESH* 10 G PLAG 11 G CPX 12 G TI.MAG 13 G HEMOIL 14 A CHLORITE 15 A CALCITE 16