G104 0642E002W030000003 1-6C. DU CONGLOMERATE, PARTLY OXIDIZED, SUBROUNDED TO ROUNDED PEBBLES. see comments see comments see comments see comments see comments see comments see comments see comments Pebbles are < 30 cm in size. Components: vesicular, fine-grianed basalt, aphyric, sparsely vesicular, phyric basalt; pale green coarse-grained basalt, fine-grained basalt with chilled margin and pockets filled by pale green tuff; carbonaceous tuff, light brown basaltic lapillistone; quartzofeldspar biotite gneiss; slate, biotite rich; fine-grained sediments. Unit S3. N G104 0642E003R010000003 1-31. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 624E-2W-3. Unit S3. N G104 0642E004R010000003 1-2. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-2W-3. Unit S3. N G104 0642E004R010310004 All DU TUFF, LAPILLI TUFF, AND LAPILLISTONE. see comments see comments see comments see comments see comments see comments see comments see comments Color is dark red to dark red brown, with basaltic scoria, red brown tuff, brownish yellow pumice, feldspar, coarse-grained basalt. UnitS4. N G104 0642E005R010000004 1-8E. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-4R-1. Unit S4. N G104 0642E005R020000004 1-5B. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-4R-1. Unit S4. N G104 0642E005R020460001 6-9. DU HIGHLY ALTERED, SPARSELY PLAGIOCLASE, PHYRIC GRAY GREEN BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Moderately vesiclar, but locally nonvesicular, coated with yellow limonite and filled with red clay. Hairline cracks throughout. Unit F1. N G104 0642E005R030000001 1-9. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-5R-2. Unit F1. N G104 0642E005R031290005 All DU FINE-GRAINED BASALTIC VITRIC TUFF. see comments see comments see comments see comments see comments see comments see comments see comments Dark red brown to yellowish red brown fine-grained basaltic vitric tuff, median clast size <0.1 mm, containing angular to round fragments. Few subunits with gradational contacts, and horizontal bedding. Unit S5. N G104 0642E006R010000005 All DU UNIDENTIFIED DRILLING RUBBLE see comments see comments see comments see comments see comments see comments see comments see comments Unit S5. N G104 0642E007R010050002 All DU FINE-GRAINED, APHYRIC, BLACK TO DARK GRAY BASALTIC FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Highly vesicular and strongly altered groundmass, with vesicles unfilled but coated with white (zeolites?) and/or with pale green smectite (celadonite?). Unit F2. N G104 0642E007R020000002 1-23. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-7R-1. Unit F2. N G104 0642E007R021110006 19. DU UNIFORMLY DARK RED BROWN, FINE-GRAINED TUFF. see comments see comments see comments see comments see comments see comments see comments see comments Top and bottom contacts not recovered. Unit S6. N G104 0642E007R021230003 21-23. DU FINE-GRAINED, APHYRIC, BLACK TO DARK GRAY BASALTIC FLOW. see comments see comments see comments see comments see comments see comments see comments see comments As Unit F2, except vesicles have only beige smectite(?) or limonite-coated rims, and alteration to base to pale gray green color. Unit F3. N G104 0642E007R030000003 1-6. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-7R-2. Unit F3. N G104 0642E008R010000003 1-2. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-7R-2.. Unit F3. N G104 0642E008RCC0000003 1. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-7R-2. Unit F3. N G104 0642E009R010000003 1A-2. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-7R-2, Unit F3. N G104 0642E009R010220001 3-9B. DU FINE-GRAINED, SPARSELY PHYRIC, DARK GRAY BASALT. see comments see comments see comments see comments see comments see comments see comments see comments Moderately to sparsely vesicular. Vesicles filled with calcite and dark green smectite rims, or open. Some light gray green smectite and fine dark green smectite alteration in groundmass. Native copper present in 9R-1, Piece 5b. 10R-1, Piece 1, contains smectite-rich zone that may be a chilled margin or zone of tectonic shear. Unit D1. N G104 0642E009R020000001 1-10. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-9R-2, Unit D1. N G104 0642E010R010000001 1. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-9R-1, Unit D1. N G104 0642E010R010040002 2-18. DU FINE-GRAINED, APHYRIC, DARK GRAY BASALT. see comments see comments see comments see comments see comments see comments see comments see comments Moderately vesicular, with vesicles filled by calcite, or rimmed by dark green or dark brown smectite. Iddingsite pseudomorphs after olivine locally glomeroporphyritic. 10R-1, Piece 2, contains smectite-rich zones that may be a chilled margin or zone of tectonic shear.Unit D2. N G104 0642E010R011400007 19-21. DU HIGHLY ALTERED, CRYSTAL-BEARING TUFF. see comments see comments see comments see comments see comments see comments see comments see comments Dark olive gray, possible tectonic, at contact to overlying unit; pale brown, highly fragmented away from contact. Unit S7. N G104 0642E010R020000003 1-23. DU FINE-GRAINED, SPARSELY OLIVINE PHYRIC BASALT. see comments see comments see comments see comments see comments see comments see comments see comments Very fine-grained smectite-rich zone at 8-10 cm , possibly an inclined chilled margin or tectonic shear zone. Sparsely vesicular, with green smectite and calcite fillings. Subparallel, dark streaking (flow fabric) throughout unit. Unit D3. N G104 0642E010R030000004 1-12. DU FINE-GRAINED, APHYRIC TO SPARSELY PHYRIC GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Highly to sparsely vesicular with vesicles filled with calcite and dark green smectite. Some alternation to smectite(?) along fractures. Native copper blebs within vesicle fillings. Some weak development of streaky lamination. Unit F4. N G104 0642E011R010000004 1-15E. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-10R-3, Unit F4. N G104 0642E011R020000004 1A-2H. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-10R-3, Unit F4. N G104 0642E012R010000004 All DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-10R-3, Unit F4. N G104 0642E012R010200005 All DU VERY FINE-GRAINED, APHYRIC BLACK BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Locally massive, but generally brecciated and highly altered to clay minerals. Unit F5. N G104 0642E012R010680008 All DU DARK BROWN TUFF LAYER WITH POCKET FILLINGS OF VITRIC TUFFS IN THE UNDERLAYING BRECCIA. see comments see comments see comments see comments see comments see comments see comments see comments Contains cuneiform shards replaced by pale to dark green secondary minerals. Unit S8. N G104 0642E012R010690006 All DU FINE-GRAINED, GLASSY, APHYRIC, BLACK BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Moderately vesicular, filled with dark green smectite with subordinate calcite. Unit F6. N G104 0642E013R010000007 1-13E. DU FINE-GRAINED, APHYRIC TO SPARSELY PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Moderate vesicularity, vesicles filled with dark green smectite, some calcite, some coalescence of vesicles to irregular shapes. Euhedral plagioclase phenocrysts. Some local subhorizontal streaking (flow fabric) defined by smectite-rich bands.Unit F7. N G104 0642E013R020000007 1-10. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-13R-1, Unit 7. N G104 0642E014R010000007 1-13. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-13R-1, Unit 7. N G104 0642E014R010800009 14A-16. DU DUSKY GREEN TO BROWN VITRIC TUFF. see comments see comments see comments see comments see comments see comments see comments see comments Contains fresh and altered vesicular and pumiceous shards. Unit S9. N G104 0642E014R011070008 17-19. DU FINE- TO MEDIUM-GRAINED, APHYRIC TO SPARSELY PHYRIC, GRAY, BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments As Unit F7, except that the plagioclase phenocrysts become more common lower in the flow, along with an increase in grain size. Unit F8. N G104 0642E014R011360009 20-21. DU MEDIUM-GRAINED, SPARSELY PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Sparsely vesicular with smectite coatings and some calcite fills. Plagioclase and olivine phenocrysts form 1%-2% and are <1.0 mm in diameter. Unit F9. N G104 0642E015R010000009 1-15. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-14R-1, Unit 9. N G104 0642E015R020930011 12A-13. DU MEDIUM-GRAINED, PLAGIOCLASE PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Nonvesicular and has light gray to white feldspar phenocrysts. Minor bleaching of groundmass, some fracturing filled with dark green smectite and calcite. Common dark green smectite patch alteration. Unit F11. N G104 0642E015R030000011 1-4. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-15R-2, Unit 11. N G104 0642E015R040000011 1-7. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-15R-2, Unit 11. N G104 0642E015R041060012 8-10. DU MEDIUM-GRAINED, MODERATELY OLIVINE PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments 0.5-0.75 mm diameter olivine phenocrysts, iddingsitized and smectite-rich. Highly vesicular at flow top breccia, with lower vesicles containing calcite and some green smectite. Smectite patch alteration throughout groundmass. Slightly more vesicular at flow base. Unit F12. N G104 0642E015R050000012 1-3. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-15R-4, Unit 12. N G104 0642E015R050450013 4-11. DU MEDIUM- TO FINE-GRAINED, MODERATELY PLAGIOCLASE + OLIVINE PHYRIC BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Vesicular throughout, almost all vesicles open but some are filled with calcite and thin dark green smectite rimsUnit F13. N G104 0642E015R051220015 10-11. DU MEDIUM-GRAINED, APHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Weakly reddened, highly vesicular near flow top, moderate to sparse below. Calcite, zeolite, green smectite fills in vesicles. Dark green smectite spotting or irregular patches throughout the groundmass. Unit F15. N G104 0642E016R010000015 1-8B. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-15R-5, Unit 15. N G104 0642E016R020000015 1-10. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-15R-5, Unit 15. N G104 0642E016R021230016 11-13. DU FINE-GRAINED, MODERATELY OLIVINE-PLAGIOCLASE PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Plagioclase phenocrysts are up to 4.0 mm long and olivines up to 0.7 mm in diameter. Highly to moderately vesicular with calcite, dark green smectite and zeolite fills. Unit F16. N G104 0642E016R030000016 1-8. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-2, Unit 16. N G104 0642E016R031000017 9-14. DU FINE-GRAINED, APHYRIC, GRAY, BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Flow base not recorved. Thick (>2.0 m) reddened gray to brownish gray highly vesicular flow top, containing reddish iddingsitized olivines, and green smectite or calcite filled vesicles. Vesicularity decreases to moderate or sparsely vesicular downsection., predominately dark green smectite fills. Development of subhorizontal laminar streaking (flow fabric) below 17R-2, 113 cm, seen as continuous and discontinuous smectite-rich laminae, some reddening from the iddingsitization of olivines. Some massive zones, e.g. 17R-4. Native copper disseminated throughout groundmass or within vesicles. Unit F17. N G104 0642E017R010000017 1-3. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-3, Unit 17. N G104 0642E018R010000017 1-5F. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-3, Unit 17. N G104 0642E018R020000017 1A-3B. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-3, Unit 17. N G104 0642E018R030000017 1A-2. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-3, Unit 17. N G104 0642E018R040000017 1-13. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-16R-3, Unit 17. N G104 0642E018R050000018 1-13. DU FINE-GRAINED, APHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Light reddish brown, highly vesicular flow top, grading to brownish gray and gray. As Unit F17 with some subhorizontal fracturing < 1.0 mm wide filled with smectite. Generally weak streaking fabric in central flow. Disseminated copper present. Basal contact with S10 is irregular and quenched. Unit F18. N G104 0642E019R010000018 1-8. DU FINE-GRAINED, APHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-18R-5, Unit F18. N G104 0642E019R020000018 1-4. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See descrition in 642E-18R-5, Unit F18. N G104 0642E019R030000018 1-3. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-18R-5, Unit F18. N G104 0642E019R040000018 1A-9. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-18R-5, Unit F18. N G104 0642E019R041370010 10 DU DARK BROWN TO GRAY GREEN, WELL-SORTED VITRIC TUFF. see comments see comments see comments see comments see comments see comments see comments see comments Contains accretionary lapilli and rounded clasts of brown to fine red tuff. Pale green smectite present in pore spaces. Very few fresh shards. Pocket infilling of scoriaceous material, top to F19. Unit S10. N G104 0642E019R050000010 1-3. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-19R-4, Unit S10. N G104 0642E019R050200019 4-6. DU FINE-GRAINED, APHYRIC, DARK GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Flow base not recorved. Highly vesicular at flow top, dark greenish gray from smectite alteration. Local coalescence of vesicles to up to 25% of rock volume, filled with dark green smectite. Towards base, from 20R-4, 30 cm down to base of recovery, streaky (flow fabric) laminations present, accompanied by elongate green smectite-filled vesicles. [Unrelated rubble at 642E-20R-1(0-9 cm)]. Unit F19. N G104 0642E020R010000019 1-10. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-19R-5, Unit F19. N G104 0642E020R020000019 1-3D. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-19R-5, Unit F19. N G104 0642E020R030000019 1A-6. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-19R-5, Unit F19. N G104 0642E020R040000019 1-7. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-19R-5, Unit F19. N G104 0642E020R041040020 8. DU MEDIUM-GRAINED MODERATELY PLAGIOCLASE-OLIVINE PHYRIC, GRAY TO DARK BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Highly vesicular, mostly dark green smectite filled with minor calcite and zeolite, grading to sparsely vesicular in lower section. Dark green gray smectite filled hairline fracturing. Some inclination of vesicles streaming in center of floUnit F20. N G104 0642E021R010380020A12-14. DU AS UNIT 20. see comments see comments see comments see comments see comments see comments see comments see comments Unrelated rubble of volcaniclastic sediment at 642E-21R-1 (0-38cm). Unit F20A. N G104 0642E021R020000020AAll DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 624E-21R-1, Unit F20A. N G104 0642E021R030000020A1A-6. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 624E-21R-1, Unit F20A. N G104 0642E021R030480021 7-12D. DU MEDIUM-GRAINED, MODERATELY PHYRIC, DARK GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Very dark gray to black highly vesicular flow top, red-veined and brecciated. Vesicles filled lower in flow by dark green smectite. 2.0-4.0 mm long plagioclase laths and <3.0 mm olivines present. Predominantly subvertical or steeply inclined smectite filled veining. Unit F21. N G104 0642E021R040000021 1A-5. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-21R-3, Unit F21. N G104 0642E021R050000021 1-4. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-21R-3, Unit F21. N G104 0642E021R050610022 6. DU MEDIUM-GRAINED, SPARSELY TO MODERATELY OLIVINE-PLAGIOCLASE PHYRIC, GRAY BASALT FLOW. see comments see comments see comments see comments see comments see comments see comments see comments Euhedral olivines and plagioclase laths < 3.0 mm diameter. Moderately vesicular, filled with dark green smectite. Steeply inclined fracturing filled with smectite. Subhorizontal elliptical vesicles at 22R-2, 60 to 62 cm. Unit F22. N G104 0642E022R010000022 1-10B. DU CONTINUED. see comments see comments see comments see comments see comments see comments see comments see comments See description in 642E-21R-5, Unit F22. N G104 0642E022R020000022 1-3C. DU CONTINUED. see comments