Size Minerals Rock fragments Cement Bioclasts Thin-section number "Core, section, interval (cm)" Depth (mbsf) Described by Lithology (dominant/minor) Conglomerate Sand Silt Clay Minerals (%) Quartz Strained Unstrained Feldspar Multiple twins Single/untwinned Mica Biotite Muscovite Carbonate Chlorite Glauconite Accessory minerals Clinopyroxene Amphibole Olivine Epidote Opaques Rock fragments (%) Plutonic Volcanic Rhyolitic/dacitic Vitric Andesitic/basaltic Dolerite Sedimentary Siltstone Metamorphic Schist Serpentinite Matrix (%) Cement (%) Sparry calcite Micrite Siliceous Bioclasts (%) Foraminifers Benthic Planktonic Shell debris Algae Echinoderms Bryozoa/corals Carbonaceous detritus Sediment or rock name Comments 180-1109C- 41 "21X-CC, 40-42" 189.28 "TRS,AR" M A R R 1 R a R a R a A R R a r C 1 R A c c R a 60 38 A a c R R R R Wackestone Phosphatic grains 42 "26X-CC, 18-20" 217.88 "TRS,AR" M A R R 44 R c c C c c R a r R C a c R 50 R A c a R r a 5 1 A r r C C R Medium-grained sandstone Calcareous matrix 43 "28X-1, 4-8" 256.34 "TRS,AR" D R R A 1 C a A a c R R a R 1 A a 88 10 A a Silty clay Calcareous matrix semilithified 44 "37X-1, 112-114" 344.21 "TRS,AR" D A C C 50 C a r C a R C r a r R 5 A a R a 44 1 A Coarse-grained sandstone "Zoned plagioclase, pyrite- filled foraminifers" 180-1109D- 45 "1R-2, 48-49" 354.78 "TRS,AR" M C C A 20 R a A a c R a R C r a R 1 A c c c 74 5 A a R Sandy siltstone "Micrite matrix, rare microcline" 46 "1R-2, 56-58" 354.86 "TRS, AR" M C C C 40 R a A a c R a R C a R 1 A a c 59 Fine-grained sandstone "Micrite matrix, fresh glass" 51 "2R-2, 110-113" 361.51 "TRS, AR" M A C R 30 R a c C a r C a R R C a R 2 A a 68 Fine- to medium-grained sandstone "Graded, well-sorted, siltstone matrix, fresh glass" 47 "3R-2, 148-149" 371.68 "TRS, AR" M C C C 50 C a A c a C a R C a R 5 A r a r 45 Fine-grained sandstone "Well-sorted angular grains, fresh bubble wall glass" 48 "4R-1, 0-2" 385.53 "TRS, AR" D R C C 40 R a A c a C a C r a 5 A a c c 55 Clayey siltstone "Very fresh detrital minerals, micritic matrix, fresh rounded glass" 53 "6R-2, 112-114" 399.73 "TRS, AR" M C C A 25 R a C a c A a R C a 1 A c c c 72 2 A a Silty claystone "Fresh glass, burrows lined with foraminifers, pyrite inside" 54 "8R-1, 54-58" 417.04 "TRS, AR" D R A C 25 R a A a c R a R 1 A c c c 73 1 A r a Clayey siltstone Calcareous matrix 55 "8R-3, 96-100" 419.88 "TRS, AR" D C C C 30 R a A c c A R R a 1 A a a 68 1 A a Sandstone-siltstone couplet "Detrital sand-size grains define laminae, sharp bases, black glass, redeposited ash" 56 "10R-1, 132-134" 436.95 "TRS, AR" M C C C 49 R a A a c A a R R a 1 A a 50 Very fine sandstone "Possible current dominated laminae, biotite aligned parallel to lamination" 57 "10R-4, 95-98" 440.7 "TRS, AR" D C C C 40 R a A a c A a R C a R 19 A c r c 40 1 A a Fine-grained sandstone "Parallel lamination, reverse grading, pyrite filled foraminifers, very angular grains" 58 "11R-3, 83-85" 448.88 "TRS, AR" M C C C 40 R a A a c C a R C r a 15 A r a 44 1 A a Medium- to fine-grained sandstone Biotite concentrated in coarse fraction parallel to lamination 59 "12R-4, 95-97" 459.82 "TRS, AR" D C C C 69 R a A a c C a R C r a 10 A a c 20 1 A a Fine-grained sandstone "Well-sorted, claystone-filled burrows" 60 "20R-2, 104-108" 534.51 "TRS, AR" M A R R 60 R a C a c C a R R C r a 20 A c a 19 1 A a Fine-grained sandstone "Normally grading into siltstone, burrowed" 61 "22R-1, 57-60" 551.77 "TRS, AR" M R C A 40 R a R c c A a R 59 1 A Silty claystone "Thin siltstone laminae, abundant biotite aligned parallel to lamination, infilled burrows, small ripples (?)" 62 "22R-1, 102-107" 552.22 "TRS, AR" D R A C 30 R a r A c c A a R R a R A a 69 1 A r a R Siltstone "Highly micaceous, calcareous, pyrite-filled foraminifers, small shells or carapaces" 63 "25R-6, 7.5-9.5" 577.54 "TRS, AR" D C R C 10 R a A c c C a R a R 1 A a r 40 49 A a c R Packstone "Pyrite-filled foraminifers and framboids, well-sorted, shells parallel to bedding framboids" 75 "27R-1, 45-48" 590.05 "TRS, AR" D A C C 8 R a C a C a R R R a 2 A a r 30 60 A a R R Packstone "Well-sorted, brown glass, micritic matrix" 76 "28R-1, 8-11" 599.28 "TRS, AR" D A R C 50 R a A c c R a R R R r a R 10 A a r r 30 10 A a r R R R Packstone "Shallow derived bioclasts, micritic matrix" 77 "32R-2, 101-103" 640.32 "TRS, AR" D C R A 2 A c c C R R r c 2 A a 40 56 A c c C C C C Packstone "Calcareous matrix, fresh to highly altered volcanic fragments" 78 "34R-5, 62-65" 663 "TRS, AR" D A R C 5 R a A c c R a R R a 1 A a R a 50 44 A a r A R C Packstone "Well-sorted, cross-laminated (?), current reworked" 79 "37R-2, 104-108" 688.52 "TRS, AR" D C A R 90 C a A a c C a R r a R 10 Sandy siltstone Well sorted 80 "38R-2, 12-18" 697.1 "TRS, AR" D A R R 60 R a A a c C a C r c 20 A r c r 20 a Fine-grained sandstone "Carbonaceous laminae, glass contains phenocryts also seen in matrix, ferruginous alteration" 81 "38R-4, 10-14" 699.86 "TRS, AR" D C C C 15 R a A a c A a R R c c C 10 A c c r 55 20 a Fine-grained sandstone "Carbonaceous and fine- grained well-sorted angular sandstone laminae, burrowed, fresh glass" 82 "39R-3, 28-31" 708.32 "TRS, AR" M C C C 20 R a A a c R R r a R 5 A a r R a 60 5 A 10 a Fine-grained sandstone "Altered and unaltered glass, microline, well to moderately sorted, angular, highly altered" 83 "39R-3, 64-67" 708.68 "TRS, AR" D C A C 40 R a A a r C R c r C 5 A c c 42 13 a Sandy siltstone "Carbonaceous and fine-grained sandstone laminae, framboidal pyrite, abundant chloritized clasts, rare phosphate" 70 "44R-1, 6-8 (#2)" 753.66 "TRS, AR" M A R R 20 C a c C a 79 A c a c 1 a Medium-grained sandstone "Highly altered, devitrified glass and felsic volcanics, rare zeolites" 72 "45R-1, 75-78(#16)" 754.35 "TRS, AR" M A C 30 R a C a C A a 60 A r c c 10 Ortho-conglomerate "Pebble-, granule-, and sand-size clasts, highly altered matrix" 71 "45R-1, 46-50 (#7)" 763.66 "TRS, AR" M A 90 A a a 10 Ortho-conglomerate "Pebble-size clasts, highly altered matrix, variolitic and pyroxene-rich basalt, oxidation rim on the clasts" 73 "45R-1, 107-108 (#19)" 764.27 "TRS, AR" M A R R 30 C a C c a C C a 10 A r c c r 40 20 A Coarse-grained sandstone "Highly altered claystone matrix, carbonate veining." 74 "45R-2, 109-114 (#17)" 765.79 "TRS, AR" M A 5 A a 80 A c c 15 Ortho-conglomerate Note: A = abundant (51%-100%); C = common (11%-50%); R = rare (1%-10%); lower case letters indicate subcategories of the major constituents.