7 63 10 1 320 0 561.00 561.32 HEAT I 22 1 S RT BASALT 2 S % DARK GRAY BASALT IRREGULARLY IN CONTACT WITH WHITE 3 S % CHALK,CHALK CONTAINS 1-5MM ANGULAR CHIPS OF 4 S % BASALT,CHALK INFO IN SMEAR SLIDE DATA BASE; 5 S TEX PHYRIC* 6 G PLAG TO 1LATHS+MOSAICS 7 G % LOCALLY ANTIPERTHITIC WITH IRREGULARLY INTERGROWN 8 G % MOSAICS; 9 G PYX 10 G % NOW PSEUDOMORPHIC CHLORITE MASSES,BASALT WAS 11 G % PROBABLY ORIGINALLY SPHERULITIC GLASS-IT HAS 12 G % ALTERED TO PALE GREEN CHLORITE AND MONTMORILLONITE 13 G % WHICH PRESERVE THE ORIGINAL TEXTURE,THE CONTACT 14 G % BETWEEN BASALT AND LIMESTONE IS HIGHLY IRREGULAR- 15 G % ALMOST STYLOLITIC AND IS MARKED BY A .05-.2MM 16 G % RIM OF IRON(?)-MANGANESE OXIDES UNDERLAIN(IN THE 17 G % BASALT) BY A .5MM CHLORITE LAYER,IN PLACES 18 G % CALCAREOUS GRAINS HAVE "LEAKED" INTO THE BASALT* 19 A CHLORITE BASALT, PYX 20 A BASALT/CHALK 21 A CONTACT 22 7 63 10 1 380 0 561.00 561.38 HEAT I 21 1 S RT PLAG PHYRIC BASALT; 2 S TEX PHYRIC* 3 P PLAG 1-2 4 P % TWINNED,COMPLEXLY INTERGROWN AND SHOW CONSIDERABLE 5 P % UNMIXING,PARTIAL ALTERATION TO MONTMORILLONITE? 6 P % (USUALLY CRYSTALLOGRAPHICALLY CONTROLLED)IS 7 P % COMMON* 8 G PLAG 1-5LATHS,PRISMS,MOSAICS 9 G % SOMEWHAT ALTERED,APPROX COMP AN60-70 BY MICHEL- 10 G % LEVY METHOD; 11 G PYX SUBHEDRAL 12 G % HIGH 2V,ALMOST COLORLESS,NO PLEOCHROISM,GROUNDMASS 13 G % DOMINATED BY .1-.15MM CHLORITE XTLS,FE-OXIDES WITH 14 G % LESSER PLAG LATHS AND .05MM BLEBS OF PALE GREEN 15 G % MONTMORILLONITE?* 16 A CHLORITE GROUNDMASS 17 A % PINNATE BROWN; 18 A FE.OX GROUNDMASS 19 A % FINE; 20 A MONT GROUNDMASS 21 7 63 10 1 680 0 561.00 561.68 HEAT I 20 1 S RT BASALT 2 S % PALE GREEN AND RED MASSIVE MATERIAL IN IRREGULAR 3 S % CONTACT WITH DARK GRAY BASALT,LIMESTONE INFO 4 S % IN SMEAR SLIDE DATA BASE* 5 G PLAG LATHS 6 G % SCATTERED IN A SOMEWHAT PERLITIC GROUNDMASS OF 7 G % ALTERED GLASS(LOCALLY VARIOLITIC); 8 G GLASS 9 G % ALTERED BUT STILL ALMOST ISOTROPIC.THE CONTACT IS 10 G % MARKED BY A .2MM ZONE OF VERMIFORM CHLORITE 11 G % ACICULAR MASSES,BY AN IRON(?)-MANGANESE FILM UP TO 12 G % .04MM THICK BY REXTLLIZED CALCITE WITHIN .1MM OF 13 G % THE CONTACT AND BY A PATCH OF .04MM SCAPOLITE 14 G % PRISMS SURROUNDED BY BRILLIANT BLUE-GREEN 15 G % RADIATING ACICULAR CHLORITE? XTLS GRADING OUT 16 G % (AFTER .03MM) TO COLORLESS CHLORITE? OR 17 G % MONTMORILLONITE ACICULAR MASSES THEN TO PALE BROWN 18 G % VARIOLITES(?),THE SCAPOLITE APPEARS TO BE ALTERED 19 G % AT LEAST IN PART TO MONTMORILLONITE?* 20 7 63 11 112301250 563.00 564.24 HEAT I 23 1 S RT PLAG PHYRIC BASALT; 2 S TEX PHYRIC* 3 P PLAG 1-2LATHS+AGGREGATES,EUHEDRAL 4 P % APPROX COMP AN90 OR MORE* 5 G PLAG LATHS 6 G PYX 7 G % A LESSER CONSTITUENT THAN OTHERS IN GROUNDMASS. 8 G % GROUNDMASS ALSO CONSISTS OF SUBEQUAL AMOUNTS OF 9 G % PINNATE PALE BROWN CHLORITE(.5MM AGGREGATES) 10 G % PLUS FINE IRON OXIDES WITH PLAG LATHS,PLAG MUCH 11 G % LESS ALTERED THAN IN 7-63-10-1-38.IN GENERAL THE 12 G % BASALT FROM THE DEEPER LOCATION DIFFERS FROM THE 13 G % NEAR-SEDIMENT SAMPLE IN THE FOLLOWING WAYS:1)PLAG 14 G % PHENOS LESS ALTERED,2)RATIO OF XTLS TO ALTERED 15 G % GLASS MUCH HIGHER IN THE GROUNDMASS,3)MUCH LOWER 16 G % ABUNDANCE OF PALE GREEN MONTMORILLONITE? MASSES 17 G % FILLING MICROVESICLES?* 18 A CHLORITE GROUNDMASS 19 A MONT GROUNDMASS 20 A % ROUNDED MASSES OF PALE GREEN MONTMORILLONITE? UP 21 A % TO .3MM DIAMETER ARE MUCH LESS ABUNDANT THAN IN 22 A % 7-63-10-1-38* 23