Size Siliciclastic and volcaniclastic composition Biogenic composition "Core, section, " Depth interval (cm) (mbsf) Described by Lithology (dominant/minor) Sand Silt Clay Quartz Feldspar Plagioclase Muscovite Biotite Glauconite Amphibole Pyroxene Rock fragments (sedimentary) Rock fragments (metamorphic) Rock fragments (basaltic) Volcanic glass Volcanic glass (brown) Volcanic glass (colorless) Accessory minerals Carbonate Calcite Dolomite Opaque (oxide) Opaque (sulfide) Fe oxides Clinoptilolite Phillipsite Other Clay Nannofossils Foraminifers Diatoms Radiolarians Sponge spicules Shell debris Organic material Fish debris Unidentified/Other Sediment or rock name Remarks 180-1109A- "1H-1, 8" 0.08 AR M r c a r r r r r r a a r r r Clay Nannofossil clay "1H-1, 18" 0.18 AR D r a c r r r r r r a a r r r r Silt Calcareous silt "1H-1, 103" 1.03 AR M r c c r r r r r r a a r r r r Glass-rich nannofossil clay "1H-1, 123" 1.23 AR M r c c r r c r r a a r r r r Clay Glass-rich nannofossil clay "1H-2, 7" 1.57 AR M c c a r r c r r a a c r c r Clay Calcareous clay with foraminifers "1H-2, 84.5" 2.34 AR M r c a r r r r r a a r r r Clay Calcareous clay "1H-3, 5" 3.05 AR M r c a r r c r r a a r r r Clay Silty calcareous clay "1H-4, 60" 5.1 AR M a c r r c c r c c a r Sand Foraminifer sand with silt "1H-4, 103" 5.53 AR M r a c r r a r r c c r r Silt Ash-rich silt "1H-6, 24.5" 7.74 AR M r a c r r a r r r c r r Silt Ash-rich silt "1H-7, 31" 9.31 AR D c c c c r r c c r r c r r Volcaniclastic silt Calcareous volcaniclastic silt 180-1109B- "2H-1, 28" 5.58 AR M r a r r r r a r r r r Volcanic ash Silty volcanic ash "2H-3, 28" 8.58 AR M r a r r r r a c r Volcanic ash "2H-5, 63" 11.23 AR M r a r r r r r r a r r r Volcanic ash 180-1109C- "2H-2, 55" 9.45 AR D c a r r r r a r r r c r Silt Ash-rich silt "2H-3, 106" 11.46 AR M r a c r r r a r r a c r Clay Silty clay with ash "2H-4, 93" 12.83 AR M r a c r r r a r r a r r r c r Silt Calcareous silt with ash "2H-5, 69" 14.09 AR M a c r r r r r r r c c a Sand Foraminifer sand "2H-6, 48.5" 15.38 AR M a c c r r r r r r a c a Sand Silty sand "3H-2, 50" 18.9 AR D r a c r r r c a c r r c r Silt Clay-rich silt with ash and radiolarians "3H-7, 43.5" 26.33 AR D r a c r r r r c a c r r c r Silt Clay-rich silt with ash and radiolarians "4H-1, 48" 26.88 PK M r c a c c a r r a c r r Silt Clayey silt with ash "4H-3, 90" 30.3 PK D a c r r a a c r r r Silt Clayey silt "4H-5, 70" 33.1 TS D r a c r r r r a c Nannofossil-rich siltstone "4H-CC, 16" 36.3 PK M r c a c r r c a r r a c r r r Silt Clayey silt with ash "5H-2, 51" 37.91 AR D r c a r r a a r r r Clay Silty clay "5H-2, 80" 38.2 AR D c a r r r a a r r r Clay Silty clay "6H-1, 9" 45.49 AR M r a c r r r c a a r Siltstone Clayey siltstone "6H-2, 113" 48.03 AR M c a r r r r c a r r r Volcanic ash Silty volcanic ash "9H-3, 67" 77.57 AR M c a r r r Clay Silty clay "10H-2, 139" 86.29 AR M a r r r r r a c c r r Sand Volcaniclastic fine basalt largely "10H-3, 53" 86.93 AR M a r r r r r a c r Sand Volcaniclastic-epiclastic "10H-5, 22.5" 89.62 AR M a r r r r a c r r r r Sand volcaniclastic-epiclastic "12X-2, 78" 104.68 AR M r a r c c r a a r r r Silt Ash and lithic rich "12X-3, 99" 106.39 AR M r a r r r r c a r a r r r Silt Ash and lithic rich "12X-5, 82" 109.22 AR M a r r c a a Sand Carbonate sand "13X-5, 99" 118.99 AR M r a r c r r r c a c a r r r Volcanic ash Ash with lithics "15X-2, 21" 132.88 TS M r c a r r r r r c c c r r Clay Calcareous silty clay "15X-2, 95" 133.62 TS M a c c c r r c r r r r Sand Fine-grained volcaniclastic sand "15X-3, 16.5" 134.33 TS M a c r r c a t c tr t Volcanic ash Sandy silt (ash) "15X-5, 129" 138.46 TS D r a c c c r c t tr c c Volcaniclastic silt Volcaniclastic clayey silt "16X-1, 99" 141.79 TS D r c a c c c c c c r Volcaniclastic clay Volcaniclastic silty clay "16X-4, 62" 145.92 TS M a r r r a r r r r Volcanigenic siltstone "16X-4, 87" 146.17 TS M c a r r r r r a r r Volcanic ash "17X-CC, 14" 152.94 TS M a c r r a c r c r r Volcaniclastic silt Volcaniclastic clayey silt "17X-CC, 28.5" 153.08 TS M a r r r a Volcaniclastic sand Fine-grained volcaniclastic sand "18X-1, 60" 160.7 AR M c a r c Silt Carbonate silt "19X-1, 132" 171.02 AR M a c c a c r r a c r r c r Volcaniclastic sand "20X-2, 26" 181.06 AR D c a r r r c a r r r Clay Silty clay "20X-4, 22" 184.02 AR M a c a c r r a a c r r c c Sand "Mixed volcaniclastic, clastic terrigineous and bioclastic" "22X-2, 23" 199.53 AR D c a r r r c a a r r Clay Silty clay "23X-2, 13" 209.73 AR D r a r r r a r r Clay "23X-8, 7.5" 217.32 AR M c a r r r r r r r r c c r c r r c Silt Common woody fragments "26X-6, 5" 244.5 AR M r c a r r r c c a a c Clay Calcareous clay with pyrite framboids "27X-1, 50" 247.2 AR D r a r r r a c Clay Silty clay "27X-1, 72.5" 247.42 AR M c a r c r c a r c r c Siltstone "27X-5, 92" 253.62 AR D r r r r a a a a Clay Calcareous silty clay "29X-3, 44" 269.44 TS D r a r r r r r r r c r c Silt Clayey silt "29X-3, 56" 269.56 TS D c r r r r c r r c Silt Sandy silt "29X-3, 60" 269.6 TS D c a r c r r r r r r r Volcanic ash Silty volcanic ash "30X-1, 38" 275.98 TS M c a r c r r r c c r r r Volcaniclastic silt Volcaniclastic sandy silt "30X-1, 107" 276.67 TS M r a r r r a r r r r Volcanic ash "30X-3, 45" 279.05 TS D r c a r r r c c r r c c r r Silty clay "30X-6, 15" 283.25 TS M a c r c r c c r r r r r Volcaniclastic silty sandstone "31X-2, 2" 286.62 AR M r a r c r r r a r r r r r Volcanic ash Silty volcanic ash "31X-4, 100" 290.6 AR M r a r r r r r r r a r r Volcanic ash "33X-3, 49" 307.99 AR M r a c c r r r r r r a r Silt Clayey silt "33X-3, 57" 308.07 AR D r c a r r r r r r a c Clay Silty clay "34X-2, 16" 315.86 AR M r a r r r r r r a c r Clay Silty clay "34X-6, 134" 323.04 AR M r a r c r r a r r a r Volcanic ash Clayey volcanic ash "35X-3, 97" 327.87 AR M r c a c r r c a r Silty clay "35X-3, 100" 327.9 AR M a c r r r r r c a r Silty clay "35X-6, 100" 332.4 AR M a c r a c c r c r r c r r Sand "36X-1, 19.5" 333.69 AR M a r r c c a c r r a a r Sand Biotite-rich sand "36X-3, 46" 336.96 AR M c a r c c c r r r a c c Volcaniclastic silt Volcaniclastic silt "38X-4, 23" 351.33 TS M a c c r c c r c c r r r Volcaniclastic sandstone Volcaniclastic fine-grained sandstone "39X-6, 76" 360.86 TS D a c r r c r c r r r r Volcaniclastic siltstone Volcaniclastic sandy siltstone "40X-1, 89" 363.09 TS D c a r c r r r r r r r r Volcaniclastic siltstone Volcaniclastic sandy siltstone "40X-1, 131" 363.51 TS D r a c r r r r c r r Volcaniclastic silt Volcaniclastic clayey silt "41X-1, 110" 372.6 TS D a c c c r r a r r c r r Silt Clayey silt "41X-3, 3" 374.53 TS D c a c c c c c c r r Volcaniclastic silt Volcaniclastic sandy silt "41X-4, 4" 375.74 TS M a c r r r r r c r r Volcaniclastic sandstone Volcaniclastic medium-grained sandstone "41X-4, 18" 375.88 TS D r a c r c c c r Siltstone Clayey siltstone 180-1109D- "1R-2, 56" 354.86 TS M a c c c c r c r r r "1R-2, 57" 354.87 TS M a r r r r r c r "2R-3, 61" 362.42 AR M r a c c r r r r r a r Clayey silt "3R-4, 91" 373.7 TS D r c a r r r c r r Volcaniclastic clay Volcaniclastic silty clay "4R-2, 71" 380.11 TS D r a c c r c r r r Volcaniclastic siltstone "6R-4, 92" 402.05 TS D r a c r r r c r r c r Clayey silt "7R-3, 80" 410.34 TS M a c r r r r c r r r r Volcaniclastic sandstone "9R-6, 43" 433.4 TS M c a r r c r r c r r r Volcaniclastic siltstone Volcaniclastic sandy siltstone "11R-1, 92" 446.22 TS M a r r c c r c r r Volcaniclastic sandstone Volcaniclastic fine-grained sandstone "11R-6, 61" 452.81 TS D r a c c r r r c r r Sandy siltstone "12R-4, 57" 459.43 TS M a c r r c r r r r r r Volcaniclastic sandstone Volcaniclastic medium-grained sandstone "12R-5, 51" 460.67 TS D r r a r c r c r r r Silty clay Calcareous silty clay "12R-6, 58" 461.88 TS M a c r r c r r r r Volcaniclastic sandstone Volcaniclastic fine-grained sandstone "12R-6, 61" 461.91 TS D r c a c c r r r c r Silty claystone "14R-1, 14" 474.24 TS D r c a r r r c r r r a r r r Volcanic ash Silty volcanic ash "14R-1, 58.5" 474.685 TS D r a r r r r a r r Volcanic ash Silty volcanic ash "14R-1, 98" 475.08 TS M a c r r r r r a r r Volcanic ash "15R-6, 47" 490.79 AR M r a c c c r r a a c Silt Clay-rich silt; calcite rhombs "15R-7, 40" 491.58 AR D r a c r r r r r r r r c c Silty clay "18R-CC, 11" 522.41 AR M r c c c r r r r a a c Silty clay "19R-3, 83" 525.82 AR M c a c c r r r r r r r r r c r Clay-rich siltstone "Clay-rich siltstone, tiny muscovites" "20R-2, 36" 533.8 AR M c a r c r r r r r r r c Volcaniclastic silt Volcaniclastic silt with glass "21R-1, 37" 541.97 AR D r a c r r r r r r a c c Clay-rich calcareous silt Carlsbad twinned feldspar "21R-1, 75" 542.35 TS D c c r c r r c r r r Silty sandstone "22R-1, 62" 551.82 TS M a r a r r r Volcaniclastic silt Very well sorted angular grains (see XRD [Orthoclase?]) "22R-4, 14" 554.79 TS D r a r r r r r c r c c Sandy siltstone "Devitrified glass, amphiboles" "23R-1, 30" 561.1 TS D r c a r r r c r c . c Claystone Amphiboles "25R-2, 40" 572.24 TS D a c r r r r c r c c c Silty sandstone Fine-grained silty sandstone "25R-3, 34" 573.47 TS D a c r r r r c r c c c Sandstone Fine-grained sandstone "25R-3, 50" 573.63 TS D a c r r r c c r c r r Sandstone Mixed medium-grained sandstone "25R-4, 35" 574.98 AR D c a r c r r r c c r r c c c r Calcareous siltsone Mixed siliciclastic/carbonate silt "26R-2, 18" 581.64 TS D r c a r r r r c c c Calcareous silty sandstone "27R-1, 23" 589.83 AR M r c a r r r r r r r a a c r Silty clay Rare pyrite cubes "27R-3, 45" 592.45 AR D r a c r r r c r r c r r c c r Calcareous silt Calcareous and lithoclastic "30R-1, 50" 619 AR D c a r r r r r r r c c r r r c r Calcareous silt Foraminifer rich "34R-3, 30" 660.11 AR D c a c r r r c r r c r r r Calcareous silt "35R-4, 90" 671 AR D r c a r r r r r c c r r c c Silty calcareous claystone "35R-6, 30" 673.15 AR D r a c r r r r c a c c Clay-rich siltstone "36R-4, 40" 681.3 TS D r a c r r r r r r r r c r Clayey siltstone "37R-1, 10" 686.1 TS M r a r r r r c Dolomite-rich claystone "37R-1, 40" 686.4 TS D r a c r r r c c r r r r r Clayey siltstone "37R-2, 86" 688.34 TS D r a r c c r a r Sandy siltstone "37R-4, 62" 691.08 TS D c a c r r c a r r Silty clay "38R-1, 6" 695.66 TS M r r a r r r r r Dolomite-rich claystone "38R-2, 14" 697.12 TS D a r r r r r c c r c Fine-grained sandstone "38R-2, 33" 697.31 TS M r r c r r r r c c Silty claystone "38R-2, 105" 698.03 TS D r c a r r r c r c r Silty claystone "38R-3, 45" 698.75 TS D r a r c c r c c c Sandy siltstone "38R-4, 44" 700.2 TS D c c r c r r c a r r Volcanic fine-grained sandstone "39R-2, 132" 707.93 TS D r a c c r r a r r Volcanic siltstone "40R-1, 2" 715.02 AR M c a c c r a c c Fe-rich Silt "40R-1, 20" 715.2 AR D r a c r c r r r c c Clay-rich silt Ferruginous "40R-1, 70" 715.7 AR D r a c c c r r r Fe-rich silt "40R-CC, 4" 718.94 AR M r r r r r a c Ferruginous concretion Pisolith "41R-2, 20" 726.4 AR M r a c r c c a a r c c Volcaniclastic silt Volcaniclastic siltstone "41R-3, 70" 727.98 AR D r a c r r c c r r c a Volcaniclastic silt Volcaniclastic siltstone "42R-CC, 29" 737.11 AR M r a c c r c r c c Clay-rich silt Notes: a = abundant; c = common; r = rare; tr = trace.