SUBJECT INDEX

A

accessory minerals, lithologic units, A3:13
acmite, basalt paragenesis, B8:7
acoustic impedance, vs. depth, A4:145
acoustic noise, seismic events, B2:3–4
age vs. depth Site 1201, A4:127–128 South Chamorro Seamount, A1:58
alkalinity pore water, A3:30–40; A4:34–36; B9:3–4 seawater-peridotite mud interaction, B4:6 vs. depth, A1:45, 55; A3:115; A4:132; B9:8; B10:5
alteration basalt, A4:20–22 halogens, B6:9–10 lithologic units, A3:12–14 paleoenvironment, A4:19 photograph, A3:82, 96; A4:81 sediments, A1:22 seismic properties, B11:5
alternating field, vs. magnetic intensity, A4:121
aluminum basalt paragenesis, B8:7 sediments, A4:36 vs. depth, A3:117; A4:135 See also iron + aluminum
aluminum, in clinopyroxene vs. silicon, B8:17 vs. titanium, B8:17
aluminum oxide metamorphic clasts, B4:8 serpentinite, A3:20 serpentinized peridotite compared with serpentine mud, B4:6–7 vs. barium/ytterbium ratio, B4:35 vs. calcium oxide, A1:44; A3:20, 103 vs. rubidium/ytterbium ratio, B4:36 vs. silica/magnesium oxide ratio, B4:20, 28 vs. titanium oxide, B4:23, 27
ammonium, vs. depth, A3:115; A4:132
amphibole harzburgite, A3:17 lithologic units, A3:13 mud, A3:19–20 photomicrograph, A3:74 vs. depth, A3:76–78
amphibole mica schist, photograph, A3:97; B4:15
amphibole mica schist, sodium-rich, photograph, A3:97; B4:16
amphibole schist, photograph, A3:99
amygdules, photomicrograph, A4:105
anaerobic conditions, sediments, B3:11
analcime lithologic units, A3:14 X-ray diffraction data, A4:16–17
analcime-wairakite photomicrograph, A4:90 sediments, A1:20
anions, pore water, A4:131
antigorite chlorine, B6:7 lithologic units, A3:12–13
aragonite geochemistry, B6:6–7 lithologic units, A3:13–14 mud, A3:18–20 serpentine, A1:13 vs. depth, A3:76–78
aragonite laths, photomicrograph, A3:74
arc-continent collision, Quaternary paleoceanography, B3:2–3
arc volcanism, forearcs, B4:2–3
arenite, lithic petrography, A4:14–16 photomicrograph, A4:85 tectonic genesis, A4:87
arsenic, serpentine mud, B1:8; B4:8
augite, basalt paragenesis, B8:6
authigenic minerals lithologic units, A3:13–14; A4:11–12 photomicrograph, A4:92, 104–109

B

Bacillus subtilis, sediments, B3:11
backarc basins, geology, A1:23–27
bacteria, pore water, B1:9
banding, photograph, A3:91
barium, vs. depth, B10:6
barium/ytterbium ratio, vs. aluminum oxide, B4:35
basalt chemistry, A1:17–18; A4:195–196; B1:11 clinopyroxene, B8:15 crust, B2:7–9 geochemistry, A4:22–23 mineralogy, B8:1–24 petrography, A4:20–22; B8:4–5 photograph, A4:83 photomicrograph, A4:108 spinel, B8:16 tectonic discrimination diagram, A1:59 vanadium vs. titanium, A1:59 X-ray diffraction data, A4:194
basalt, aphyric, photograph, A4:96, 102
basement age, A1:17 logging Unit 2, A4:43
basement, basaltic, magnetostratigraphy, A4:32–33
basement contact, photograph, A4:83
bastitic texture photograph, A3:81–82 photomicrograph, A3:84
bathymetry, maps, A1:34; B1:26–28
Bathymodiolus, seamounts, A1:4
beryllium. See boron/beryllium ratio
biosphere, subduction zones, A1:7
biostratigraphy magnetostratigraphy, A4:31–32 Site 1200, A3:21–25 Site 1201, A4:23–28 Site 1202, A5:8–9
bioturbation lithologic units, A4:11–12 logs, A4:77 photograph, A4:74
blueschist metamorphism lithologic units, A3:13 mud volcanoes, A1:11
borehole instrumentation Site 1200, A3:46–52 Site 1201, A4:44–61, 158–188, 225–233
borehole seismic observatories, plates, A1:20–22
borehole seismometers instruments, A1:49–51 power spectra, B2:17–18
boron fluid-rock interactions, B6:1–23 geochemical cycles, B1:8; B5:5–8 pore water, A3:31–37 seawater-peridotite interaction, B4:6 serpentine mud, B5:1–18 vs. depth, A1:45; A3:114; A4:135; B5:14–15; B6:19; B9:9; B10:7 vs. iodine, B5:16 vs. silica/magnesium oxide ratio, B4:30 vs. titanium oxide, B4:31
boron/beryllium ratio, serpentine mud, B4:8
boron/chloride ratio pore water, B5:4 vs. depth, B5:14; B6:19
boron/lithium ratio, serpentine mud, B4:8
boron isotopes pore water and solid samples, B1:7–8; B6:6–7 vs. 1/boron ratio, B6:20 vs. depth, B6:19
breccia lithologic units, A4:12–14 morphology, A3:55–56
breccia, pillow, photograph, A4:100
breccia, polymict, geology, A1:16
breccia, serpentine mud photograph, A1:41 photomicrograph, A1:42–43
brecciation, serpentinite, A3:55
bromide fluid-rock interactions, B6:1–23 vs. depth, B6:17; B10:4
bromide/chloride ratio pore water, B6:5–10 vs. 1/chloride ratio, B6:18 vs. depth, B6:17; B10:4
brucite geochemistry, B6:6–7 harzburgite, A3:17 lithologic units, A3:12–13 photomicrograph, A3:72, 89 vs. depth, A3:76–78
Brunhes Chron magnetostratigraphy, A5:10–11; B13:4–5 paleoclimatology, A1:27
bubble vesicles, photomicrograph, A4:84–85
burrows, lithologic units, A5:7–8
bytownite, basalt paragenesis, B8:5–6

C

calcareous sediments, photograph, A5:20–22
calcite geochemistry, B6:6–7 vs. depth, A3:76–78
calcium basalt, A4:22–23 basalt paragenesis, B8:7 pore water, A3:33, 35–37; A4:33–36; B9:3–4 seawater-peridotite mud interaction, B4:6 sediments, A1:21 vs. depth, A1:55; A3:116; A4:133; B2:25; B9:7; B10:6
calcium oxide basalt, A4:22–23 diagenesis, A4:35–36 metamorphic clasts, B4:7–8 serpentinized peridotite compared with serpentine mud, B4:6–7 vs. aluminum oxide, A1:44; A3:20, 103 vs. depth, A4:110 vs. magnesium/(magnesium + iron) ratio, A1:44; A3:20, 103 vs. silica, B4:26 vs. silica/magnesium oxide ratio, B4:21, 28 vs. titanium oxide, B4:24
caliper logs, vs. depth, A4:155
carbon, dissolved inorganic, vs. depth, B7:7
carbon, inorganic, pore water, B7:1–12
carbon, organic sediments, A3:35–37, 162 vs. depth, A3:119
carbon dioxide, pore water, B1:5
carbon isotopes foraminifers, B3:6, 30 methane, B7:10 pore water, B9:14 vs. depth, B7:8–9; B9:11
carbonate compensation depth crust, B2:7 paleoclimatology, A1:26–27 sediments, A1:22
carbonate content sediments, A3:34–37, 162 vs. depth, A3:119
carbonate intervals lithologic units, A3:11–12 vs. depth, A3:67
carbonates clasts, A5:8 diagenesis, A4:35–36 lithologic units, A5:7–8 photomicrograph, A4:105
cations, pore water, A4:131
Central Basin Fault, geology, A1:15–16
cesium geochemistry, B1:11 serpentine mud, B1:8; B4:8
chabazite photomicrograph, A4:92 sediments, A1:20 X-ray diffraction data, A4:16–17
chert lithologic units, A4:11–12 photograph, A4:76
chert, diagenetic, lithologic units, A3:14
chilled margins, photograph, A4:97
chloride bulk solids, B6:7 fluid-rock interactions, B6:1–23 pore water, A3:30–37; B9:3–4 vs. depth, A3:114; B6:17, 21; B9:8 See also boron/chloride ratio; bromide/chloride ratio; fluoride/chloride ratio; iodide/chloride ratio; sodium/chloride ratio
chlorinity pore water, A4:33–36 sediments, A1:21 vs. depth, A4:132; B10:4
chlorite lithologic units, A3:14 sedimentary regimes, B3:9 vs. depth, A3:76–78
chlorite-amphibole schist, photograph, B4:15
chlorite-tremolite schist, photomicrograph, B4:16
chlorite/kaolinite ratio sedimentary regimes, B3:9–10, 12 vs. age, B3:27
chlorite schist photograph, A3:96 photomicrograph, A3:98
chlorite schist, tremolite-rich, photomicrograph, A1:43; A3:95
chromium basalt, A4:23 metamorphic clasts, B4:8 serpentinite, A3:20 serpentinized peridotite compared with serpentine mud, B4:7 vs. nickel, B4:22 vs. yttrium, A1:59; A4:115
chromium spinel dunite, A3:17–18 harzburgite, A3:16–17 lherzolite, A3:18 photomicrograph, A3:80, 88
Chron C1n magnetostratigraphy, A5:10–11 paleoclimatology, A1:27
Chron C3n.4n magnetostratigraphy, A4:31 sediments, A1:21
Chron C5Bn.1n, magnetostratigraphy, A4:31
Chron C6Cn.3n, magnetostratigraphy, A4:31
Chron C7n.2n, magnetostratigraphy, A4:31
Chron C11n.2n, magnetostratigraphy, A4:31
Chron C12, biostratigraphy, A4:25
Chron C12n, magnetostratigraphy, A4:32
Chron C12n.16n.2n, sediments, A1:21
Chron C13n, magnetostratigraphy, A4:32
Chron C13r, biostratigraphy, A4:24
Chron C15n, magnetostratigraphy, A4:32
Chron C15r, magnetostratigraphy, A4:32
Chron C16n, magnetostratigraphy, A4:32
Chron C21 basaltic basement, A4:33 geology, A1:15–16
chrysotile chlorine, B6:7 photograph, A3:140 photomicrograph, A3:73
circulation obviation retrofit kit, configuration, A3:47–51, 133–137
clasts boron and iodine, B5:5–8 breccia, A3:55–56 carbonates, A5:8 halogens, B5:18 Krumbein sphericity vs. maximum length, A3:143 lithologic units, A3:11–12; A4:13–14 mud volcanoes, A1:10–15 peridotite, A1:3–4 petrography, A4:14–16 petrology, A3:16–21; B1:10–11 photograph, A3:68, 90, 141–142, 144 seismic properties, B11:1–12 serpentinite, A3:60–63
clasts, biogenic, photomicrograph, A4:99
clasts, serpentinite, photograph, A3:79
clay, bioturbated silty lithologic units, A4:11–12 photograph, A4:74
clay, geology, A1:15–16
clay, silty lithologic units, A3:13–14 photograph, A5:22
clay minerals petrography, A4:14–16 photomicrograph, A4:88–89, 103 X-ray diffraction data, A4:94
clay rims, photomicrograph, A4:90
claystone photograph, A4:82 sediments, A1:20–22
claystone, bioturbated silty lithologic units, A4:11–14 logs, A4:77 photograph, A4:74–76, 78–83
claystone, silty, photograph, A4:74–76, 78–79
cleavage, harzburgite, A3:17
clinoptilolite petrography, A4:16 X-ray diffraction data, A4:16–17 See also heulandite-clinoptilolite series
clinopyroxene basalt, B8:15 geochemistry, B6:6–7 harzburgite, A3:16–17 lherzolite, A3:18 microprobe data, B8:22–23 photomicrograph, A3:80, 87; A4:105–109; B8:12–13 position in basalt, B8:19 tectono-magmatic discrimination ternary diagram, B8:20
clinopyroxene, spherulitic, photomicrograph, B8:13
clinopyroxene phenocrysts, photomicrograph, A4:86
coarse fraction, vs. age, B3:27
color, oxidized calcareous intervals, photograph, A3:71
color bands, mud volcanoes, A1:10
composite record, magnetostratigraphy, A4:204
compressional wave velocity anomalies, B2:21 clasts, A3:41 crust, B2:6–7 pelagic muds, A4:38–39 sediments, A5:13 serpentinite clasts, B11:1–12 structure, B2:23 vs. bulk density, A3:122 vs. confining pressure, B11:7 vs. depth, A3:121; A5:35 vs. depth structure, B2:19 vs. shear wave velocity, B11:10
compressional wave velocity, average, vs. confining pressure, B11:8
concretions, lithologic units, A3:14
Conical Seamount pressure-temperature conditions, A1:6–7 serpentinite mud, B1:5; B4:1–49
consolidation tests, sediments, A6:15
correlation lithology, B3:5–6, 29 magnetic susceptibility, B3:21
cross laminations, photograph, A4:81
crossite, lithologic units, A3:13
crust geochemistry, B2:8–9 structure, B2:6–7, 24 thickness, A1:17–18
Curie temperature sediments, B13:5 serpentine mud, A3:27

D

datum levels, Oligocene, A4:24–26
debris flows, mud volcanoes, A3:15
décollement, peridotite, A1:3–4, 11–15; B1:4–5
deep resistivity logs, vs. depth, A4:153
deformation metamorphism, A3:53–54 mud volcanoes, A3:15
deformation, penetrative, harzburgite, A3:16–17
deformation, plastic, photomicrograph, A3:86
deglaciation, upper Quaternary, A1:26–27
dehydration, pore water, B5:5
demagnetization, alternating-field serpentinized peridotite, A3:110–111 vectors, A4:124, 129; A5:28; B13:9
demagnetization, magnetic remanence, A3:28–29
demagnetization, thermal basalt, A4:122 magnetite, A3:107 pillow basalt, A4:30 serpentine mud, A3:27
density clasts, A3:41, 43 pelagic muds and basalt, A4:37–38 seismic properties, B11:5, 12 vs. depth, A1:53; A4:136–143 vs. velocity, B1:4–5; B11:9
density, bulk vs. compressional wave velocity, A3:122 vs. depth, A3:120, 124–126; A4:145; A5:31–32
density, grain distribution, A3:128 vs. depth, A4:145
density logs, vs. depth, A1:54; A4:153
deposition environment, A4:95; B2:27 ocean currents, B3:3–5
depth model, sediments, B13:14
deuterium pore water, B9:4, 14 vs. depth, B9:10 vs. oxygen isotopes, B9:10
diagenesis natural gamma ray spectra, B12:6–9 paleoenvironment, A4:19 photograph, A4:80 photomicrograph, A4:88–92 seamounts, B1:6 sediments, A1:20 volcaniclastics, A4:35–36
diamicton lithologic units, A3:11–12 photograph, A3:69–70
discontinuities compressional wave velocity, B2:21 mantle, B2:4–7, 9
dissolution, diagenesis, A4:35–36
downhole measurements, Site 1201, A4:41–44
dunite photograph, A3:91 seismic properties, B11:1–12 See also harzburgite–dunite transition
dunite, serpentinized and tectonized, petrology, A3:17–18

E

East China Sea, sedimentation, B3:2–5
enstatite, lithologic units, A3:14
environment, sedimentation, A4:95
Eocene sediments, A1:20–22 See also Oligocene/Eocene boundary
Eocene, upper datum levels, A4:24–26 lithologic units, A4:12–14 paleoenvironment, A4:17–18
erionite photomicrograph, A4:92 sediments, A1:20 X-ray diffraction data, A4:16–17
ethane pore water, B7:3 vs. depth, A3:118 See also methane/ethane ratio

F

Facies I lithologic units, A3:11–12 photograph, A3:68–69
Facies IA, lithologic units, A4:11–12
Facies IB, lithologic units, A4:12
Facies IC, lithologic units, A4:12
Facies II lithologic units, A3:12 photograph, A3:70
Facies IIA, lithologic units, A4:13
Facies IIB, lithologic units, A4:13–14
faults, geology, A1:3–4; B1:2–4, 29
feldspar basalt, B8:14 lithologic units, A4:14
fluid-mobile elements, serpentine mud, B4:8, 32
fluid-rock interactions, geochemical cycling, B6:1–23
fluid budget, seamounts, A1:5–6
fluid flow natural gamma ray spectra, B12:6–9 sediments, A3:35–37
fluid transport, seamounts, A1:5
fluoride fluid-rock interactions, B6:1–23 pore water, A3:33 vs. depth, A3:117; A4:134; B6:16, 21; B10:4
fluoride/chloride ratio pore water, B6:5–10 vs. depth, B6:17
foraminifers biostratigraphy, A3:23–24; A5:8–9; B3:22 geochronology, B3:6 mud volcanoes, A1:10–14
foraminifers, planktonic distribution, A3:154 oxygen isotopes, B3:25
forearcs, serpentine mud, B5:1–18
formation factor clasts, A3:43–44 pelagic muds, A4:39–40 vs. depth, A3:131; A4:149
Formation MicroScanner imagery, vs. depth, A4:155
forsterite basalt paragenesis, B8:7 lithologic units, A3:14
fractures metamorphism, A3:54 photograph, A4:101
"Frankenstein veins" peridotite, A1:12 photograph, A3:82, 90

G

gamma ray logs, vs. depth, A1:54; A4:153–155
gamma rays clasts, A3:43 pelagic muds, A4:38 spectra, B12:1–33 spectra energy, B12:11–15, 17–18 vs. depth, A1:52–53; A3:120, 124–126; A4:73, 136–143; A5:34
gases, geochemistry, A3:160
gases, headspace, geochemistry, A3:33–34, 161
geochemical cycling fluid-rock interactions, B6:1–23 halogens, B6:1–23
geochemical observatories configuration, A1:39–40; A3:171–173 seafloor, A1:5, 10–14
geochemistry along-strike variability, A1:6 basalt, A4:22–23 crust, B2:8–9 serpentinite mud, B4:1–49 Site 1200, A3:29–40 Site 1201, A4:33–36 ultramafics, A3:150–151
geochronology, foraminifers, B3:6
geology ion seismic observatory, A1:14–16 summary, A1:3–4 West Philippine Basin, B2:1–27
geophysics, West Philippine Basin, B2:1–27
geothermal gradient clasts, A3:44 sediments, A3:170
Gephyrocapsa caribbeanica, vs. depth, A3:105
glaciation, geology, A1:23–27
glass shards, photomicrograph, A4:84–85, 89–91
glaucophane, lithologic units, A3:13; B1:10
glaucophane schist mud, A3:18–20 photomicrograph, A1:42; A3:98
goethite, thermal demagnetization, A4:122
graded bedding, photograph, A5:21
grain size mud, A3:18–20 sedimentary regimes, B3:9
granoblastic texture, dunite, A3:18
greenschist, lithologic units, A3:14
gypsum photomicrograph, A4:92 pore water, A4:34–36 X-ray diffraction data, A4:16–17

H

halite, vs. depth, A3:76–78
halogens geochemical cycling, B6:1–23 pore water, B5:17 serpentinite, B6:8–10
harzburgite photograph, A3:90 photomicrograph, A3:80 serpentine, A1:13; B1:9–10
harzburgite, coarse-grained, photograph, A3:82
harzburgite, serpentinized and tectonized, petrology, A3:16–17
harzburgite–dunite transition, photograph, A3:81
heat flow sediments, A3:170 serpentine, A1:13
heulandite-clinoptilolite series photomicrograph, A4:90 sediments, A1:20
hiatuses paleoenvironment, A4:18–19 photograph, A4:75
Holocene, magnetic intensity, B3:11
hourglass texture harzburgite, A3:16–17 lherzolite, A3:18 photomicrograph, A3:83
hyaloclastite photograph, A4:97–98, 100–102 sediments, A1:22
hyalopilitic texture, photomicrograph, A4:103
hydraulic conductivity clasts, A3:44 measurement, A6:1–15 sediments, A3:169 vs. depth, A6:14
hydrocarbons geochemistry, A3:160–161 sediments, A3:33–34
hydrogen sulfide pore water, A3:38–40 vs. depth, A3:115
hysteresis, sediments, B13:12

I

igneous petrology, A3:16–21; A4:20–23
illite, sedimentary regimes, B3:9
inclusions, photomicrograph, A3:87
index properties clasts, A3:165 discrete samples, A3:163, A4:209–214 matrix material, A3:166
intergranular texture, petrography, A4:16
iodide geochemical cycles, B1:7–8; B5:5–8 serpentine mud, B5:1–18 vs. boron, B5:16 vs. depth, B5:14–15
iodide/chloride ratio, vs. depth, B5:14
ion seismic observatory, geology, A1:14–16
iron basalt, A4:22–23 pore water, A3:35–40 sediments, A4:36 vs. depth, A3:117; B10:7 See also magnesium/(magnesium + iron) ratio
iron + aluminum, vs. iron + silicon in clinopyroxene, B8:18
iron + silicon, vs. iron + aluminum in clinopyroxene, B8:18
iron oxide basalt, A4:22–23 serpentinized peridotite compared with serpentine mud, B4:7 vs. silica/magnesium oxide ratio, B4:21
iron oxyhydroxide, photomicrograph, A4:103
isotopes, pore water, B9:1–14
Izu-Bonin/Mariana convergent plate margin, serpentinite seamounts, B1:1–30

J

joints, breccia, A3:55–56

K

kaolinite sedimentary regimes, B3:9 See also chlorite/kaolinite ratio
kink banding dunite, A3:17–18 harzburgite, A3:16–17 photomicrograph, A3:85
Koenigsberger ratio serpentine mud, A3:27–28 vs. depth, A3:106
Kuroshio Current geology, A1:22–27 path, A5:18 sedimentation, B3:3–5
Kyushu-Palau Ridge, geology, A1:15–16

L

labradorite, basalt paragenesis, B8:5–6
laminations, "inflated," photograph, A4:81
laminations, lithologic units, A4:12–14; A5:7–8
laminations, planar, lithologic units, A4:13–14
Lan-Yang River, deposition, B3:4
lanthanum, geochemistry, B1:11
lanthanum/samarium ratio, serpentinized peridotite compared with serpentine mud, B4:7
Laschamp reversal excursion, magnetostratigraphy, A5:11
lherzolite, serpentinized and tectonized, petrology, A3:18
limestone, photomicrograph, A4:86
lithium pore water, A3:33, 35–37; B1:8 seawater-peridotite mud interaction, B4:6 vs. depth, A3:116; A4:135; B9:9 vs. silica/magnesium oxide ratio, B4:30 See also boron/lithium ratio
lithoclasts lithic arenite, A4:87 photomicrograph, A3:72
lithofacies lithologic units, A3:11–12; A4:11–14 vs. depth, A4:70–72
lithologic units Site 1200, A3:11–12 Site 1201, A4:11–14 Site 1202, A5:7–8 Unit I, A3:11–12; A4:11–12; A5:7–8 Unit II, A4:12–14
lithology clasts, A3:165 correlation, B3:5–6 logs, A4:77 vs. depth, A3:67; A4:70–73; B2:25
lithosphere/asthenosphere boundary, structure, A1:17
lithostratigraphy Site 1200, A3:11–15 Site 1201, A4:10–19 Site 1202, A5:6–8
lizardite chlorine, B6:7 harzburgite, A3:17 lithologic units, A3:12–13 peridotite, A1:12
loss on ignition basalt, A4:22–23, 195–196 metamorphic clasts, B4:8 serpentinite, A3:20–21 serpentinized peridotite compared with serpentine mud, B4:6–7 ultramafics, A3:150–151 vs. depth, A4:110 vs. magnesium oxide, B4:18 vs. silica/magnesium oxide ratio, B4:18

M

maghemite, thermal demagnetization, A4:122
magnesium pore water, A3:33, 35–37; A4:34–36; B9:3–4 sediments, A4:36 vs. depth, A1:55; A3:116; A4:133; B2:25; B9:7; B10:6 See also silicon/magnesium ratio
magnesium/(magnesium + iron) ratio, vs. calcium oxide, A1:44; A3:20, 103
magnesium number basalt, A4:195–196 serpentinite, A3:20–21 ultramafics, A3:150–151
magnesium oxide basalt, A4:23 diagenesis, A4:35–36 metamorphic clasts, B4:7–8 serpentinite, A3:20 serpentinized peridotite compared with serpentine mud, B4:6–7 vs. loss on ignition, B4:18 vs. silica, B4:19, 26 See also silica/magnesium oxide ratio
magnetic declination, vs. depth, A1:57; A3:113; A4:125
magnetic domains, sediments, B13:12
magnetic hardness sediments, B13:5 vs. depth, B13:10–11
magnetic inclination sediments, B13:4–5 vs. depth, A1:57; A3:113; A4:123, 125–126, 130; A5:24–26; B13:10–11
magnetic intensity Holocene, B3:11 natural remanent magnetization, A3:26–28 sediments, B13:5 vs. age, B3:28 vs. alternating field, A4:121 vs. depth, A3:106, 113; A4:119, 123; A5:24–26; B13:10–11 vs. temperature, A3:107 vs. time, A5:23
magnetic mineralogy, mud volcanoes, A3:26–28, 155
magnetic polarity age vs. depth, A4:127–128 magnetostratigraphy, A4:30–32
magnetic properties serpentine, A1:14 serpentine mud, A3:27
magnetic remanence, demagnetization, A3:28–29
magnetic reversals, magnetostratigraphy, A4:31
magnetic susceptibility clasts, A3:165 correlation, B3:21 distribution, A3:127 matrix material, A3:166 sediments, A5:10 vs. depth, A1:53; A3:106, 120, 124–126; A4:119, 123; A5:24–27; B13:10–11
magnetic susceptibility, volume clasts, A3:40–43 pelagic muds, A4:37 sediments, A5:11–12 serpentine mud, A3:40–41 vs. depth, A4:136–144; A5:29–30; B3:21
magnetite basalt, A4:21–22 harzburgite, A3:17 photomicrograph, A3:89; B8:12–13 thermal demagnetization, A4:122
magnetostratigraphy basaltic basement, A4:32–33 biostratigraphy, A4:31–32 composite record, A4:204 magnetic polarity, A4:30–32 sedimentation rates, A4:32 sediments, A5:10–11 vs. depth, A1:57; A4:125–128
major elements metabasite, B4:44–47 metamorphic clasts, B4:7–8 serpentine mud, B4:17, 37–43 serpentinite, A3:20–21
manganese pore water, A3:33, 35–37 seawater-peridotite mud interaction, B4:6 sediments, A4:36 vs. depth, A3:116; A4:134; B10:7
manganese oxide, basalt, A1:59; A4:114
Manheim squeezer, hydraulic conductivity, A6:1–15
mantle layers, B1:13–14 pressure-temperature conditions, B2:19 structure, A1:17; B1:16; B2:4–7
mantle, upper, structure, B2:6–7
mantle wedges, seismic properties, B11:1–12
Mariana convergent plate margin system, summary, A1:1–63
Mariana forearc geology, B1:1–4; B4:2–3 summary, A1:1–63
Marinobacter alkaliphilus, pore water, B1:9
median destructive field magnetic domains, A3:28–29 vs. depth, A3:106
melange, serpentine, A1:3–4; B1:17
mesh texture harzburgite, A3:16–17 lherzolite, A3:18 photomicrograph, A3:83
metabasalt, geochemistry, B4:5, 7–10
metabasite major elements, B4:44 mud, A3:19–20
metamorphic clasts Coryell-Masuda diagram, B4:33 major elements, B4:7–8
metamorphic grains, vs. age, B3:24
metamorphic petrology, Site 1200, A3:16–21
metamorphic rocks, geochemistry, B4:1–49
metamorphism halogens, B6:9–10 parageneses, A1:7 pore water, B5:5 tectonics, A3:53–54
methane carbon isotopes, B7:10 pore water, A3:38–40; B7:1–12 sediments, A3:33–34 vs. depth, A3:118; B7:8
methane/ethane ratio sediments, A3:33–34 vs. depth, A3:118
mica, clasts, A5:8
mica-chlorite schist, photograph, A3:94
mica schist, photograph, A3:97
microbiology biosphere, A1:7; B1:14–15 sediments, B3:11 shallow subsurface, A3:37–40
microgranulation, dunite, A3:17–18
microlites basalt, A4:21–22 basalt paragenesis, B8:6 photomicrograph, B8:12
microphenocrysts, photomicrograph, B8:12
"Mikado-like" aragonite needles, A3:13–14
mineral saturation indices pore water, A4:34–36 vs. depth, A4:208
mineralogy basalt, B8:1–24 vs. depth, A1:52; A4:73; B2:25
minor elements, serpentinite, A3:20–21
Miocene, middle, photograph, A4:75
Miocene, sediments, A1:20–22
Mono Lake Excursion, magnetostratigraphy, A5:11
mottling, lithologic units, A5:7–8
mud, mud volcanoes, A1:10–15; B1:16–17
mud, serpentine photograph, A3:79, 96, 100–101 photomicrograph, A3:95
mud breccia, mud volcanoes, A1:11
mud flows, seamounts, A1:4
mud volcanoes convergent plate margins, A1:2–14 cross section, A1:35 paleosurface, A3:15 seismic properties, B11:1–14

N

nannofossils age of datum levels, A4:203 distribution, A3:152–153; A4:197–202; A5:44–45; B3:7–8 mud volcanoes, A1:10–14 preservation, A4:116 ranges, A1:56; A4:117–118 vs. depth, A3:104; A4:116–118
nannofossils, calcareous biostratigraphy, A3:21–22, 24; A4:24–28 vs. age, B3:26
neodymium geochemistry, B1:11 schists, B4:9 vs. ytterbium, B4:34 See also thorium/neodymium ratio
Neogene, sedimentary regimes, B3:8–10
nickel metamorphic clasts, B4:8 serpentinite, A3:20 serpentinized peridotite compared with serpentine mud, B4:7 vs. chromium, B4:22
niobium, geochemistry, B1:11
niobium/thorium ratio, schists, B4:9
nodules, concretionary, photomicrograph, A3:73
nodules, green, lithologic units, A4:11–12
nodules, lithologic units, A3:11–12, 14
nodules, manganese, lithologic units, A4:12
nodules, zeolite, photograph, A4:75

O

ocean circulation, deposition, B3:3–5
ocean currents, deposition, B3:3–5
Okinawa Trough, geology, A1:23–27
Okinawa Trough S Quaternary paleoceanography, B3:1–31 topography, B3:19
Oligocene datum levels, A4:24–26 sediments, A1:21
Oligocene, upper lithologic units, A4:11–14 paleoenvironment, A4:18–19
Oligocene/Eocene boundary, biostratigraphy, A4:24
olivine dunite, A3:17–18 geochemistry, B6:6–7 harzburgite, A3:16–17; B1:10 lherzolite, A3:18 photomicrograph, A3:80, 85, 93; A4:103, 108
opal-A, lithologic units, B1:6
opal-CT, lithologic units, A3:14
organic matter, pore water, A3:38–40
orthopyroxene dunite, A3:17–18 geochemistry, B6:6–7 harzburgite, A3:16–17 lherzolite, A3:18 metamorphism, A3:53–54 photograph, A3:81 photomicrograph, A3:80, 84, 87, 93
orthopyroxene, tectonized, photomicrograph, A3:86
oxidized zone, photograph, B7:6
oxygen isotopes foraminifers, B3:6, 22 pore water, B9:4, 14 vs. age, B3:6, 22, 25 vs. depth, B7:9; B9:10 vs. deuterium, B9:10

P

Pacific Ocean W, serpentine, A1:1–63
palagonitization basalt, A4:21–22 photomicrograph, A4:91 sediments, A1:22
paleoceanography, Quaternary, B3:1–31
paleoclimatology Tertiary, A1:18 upper Quaternary, A1:26–27
paleoenvironment sedimentation, A4:17–19 turbidity currents, A5:8
paleointensity, vs. age, B3:28
paleolatitude, plates, A1:18
paleomagnetism mud volcanoes, A3:155 sediments, B13:1–14 Site 1200, A3:26–29 Site 1201, A4:28–33 Site 1202, A5:9–11; B13:1–14
paleosurface, mud volcanoes, A3:15
parageneses metamorphism, A1:7 photomicrograph, A3:80
pelagic sedimentation, paleoenvironment, A4:17–19
peridotite geochemistry, A3:103 geology, A1:3–4; B:2–4 metamorphism, A3:53–54 See also seawater-peridotite interaction
peridotite, serpentinized comparison with serpentine mud, B4:6–7 seismic properties, B11:1–12
petrography basalt, A4:20–22; B8:4–5 lithologic units, A4:14–16
pH pore water, A3:35–40; A4:33–36; B1:6 vs. depth, A1:45; A3:115; A4:132; B10:5
phenocrysts basalt, A4:21–22 photomicrograph, A4:86
Philippine plate, structure, A1:16–17
Philippine Sea, geology, A1:15–16
phillipsite petrography, A4:16 photomicrograph, A4:88 X-ray diffraction data, A4:16–17
phosphorus basalt, A4:22 sediments, A4:36
phosphorus oxide, basalt, A1:59; A4:114
photoelectric effect logs, vs. depth, A4:154
physical properties sediments, A3:164, 167–168 serpentine, A1:13 Site 1200, A3:40–45; B1:13–14 Site 1201, A4:36–40, 215–222 Site 1202, A5:11–14, 46
pillow basalt lithology, A1:21 photograph, A4:97–98, 100–102
pillow lava, petrography, A4:20–22
pipe vesicles, photomicrograph, A4:84
plagioclase basalt paragenesis, B8:5–6 lithic arenite, A4:87 microprobe data, B8:21 photomicrograph, A4:85–86, 88, 104–109; B8:12–13
plagioclase, skeletal, photomicrograph, A4:104, 108
plagioclase, swallow-tail, photomicrograph, A4:104
plagioclase laths, photomicrograph, A4:105–106
planar laminations, photograph, A4:81
plate margins, summary, A1:1–63
plate tectonics, seismic observatories, B2:15
Pleistocene geology, A1:23–27 magnetostratigraphy, A4:31
pleochroism, lithologic units, A3:13
Pliocene, lower lithologic units, A4:11–12 paleoenvironment, A4:19
Pliocene, magnetostratigraphy, A4:31
poikilitic texture, photomicrograph, A3:93
poikiloptic texture petrography, A4:16 photomicrograph, A4:90
Poisson's ratio, serpentinite clasts, B11:3–4, 12
porcellanite, lithologic units, A4:14
pore pressure, clasts, A3:44
pore water boron and iodine, B5:1–18 geochemistry, A3:29–33, 156–158; A4:33–36, 131, 205–206; B1:5–8, 14, 30; B2:8–9, 25; B6:5–23; B9:1–14; B10:1–9 geochemistry vs. seawater, A3:159 peridotite, A1:11–15 sediments, A1:20–22 stable isotopes, B7:1–12 vs. depth, A1:13
porosity, vs. depth, A3:131; A4:145; A5:33; A6:14
porosity logs, vs. depth, A1:54; A4:153
porphyritic texture, basalt, A4:21–22
porphyry petrography, A4:14–16 photomicrograph, A4:85
potassium basalt, A4:22–23 pore water, A3:35–37; A4:34–36; B9:3–4 seawater-peridotite mud interaction, B4:6 sediments, A4:36 vs. depth, A3:114; A4:133; B9:7; B10:5
potassium/titanium ratio, vs. age, B3:27
potassium logs, vs. depth, A4:154–155
potassium oxide basalt, A4:22–23 natural gamma ray spectra, B12:6–9, 33 vs. depth, A4:110; B12:19 See also sodium oxide + potassium oxide
preservation, nannofossils, A4:116
pressure seismic properties, B11:1–12 vs. time, A4:156
pressure, confining vs. average compressional wave velocity, B11:8 vs. compressional wave velocity, B11:7
pressure-temperature conditions fluids, A1:6–7 mantle, B2:19
provenance paleoenvironment, A4:17–19 turbidity currents, A5:8
Pseudomonas putida, sediments, B3:11
pseudomorphism lithologic units, A3:12–13 photomicrograph, A4:91, 108
pumice ash layer, photomicrograph, A4:84
pyroxene, basalt paragenesis, B8:6, 15
pyroxene phenocrysts, basalt paragenesis, B8:6

Q

quartz lithic arenite, A4:87 lithologic units, A4:14 photograph, A4:82
Quaternary paleoceanography, B3:1–31 sedimentation, B3:1–31 sedimentation rates, B3:12
Quaternary, upper biostratigraphy, A5:8 lithologic units, A3:11–14; A5:8–9 nannofossils, A3:21–22 paleoclimatology, A1:26–27

R

rare earths elemental recycling, B4:10 geochemistry, B1:11 metamorphic clasts, B4:33 rock/chondrite ratio, B4:25 schists, B4:8–9 serpentinized peridotite compared with serpentine mud, B4:7
reaction zones, pore water, A4:34–36
recrystallization, pore water, A4:34–36
reflectance, vs. depth, A1:52; A3:67; A4:73
relict minerals, metamorphism, A3:53–54
remanent magnetization, anhysteretic sediments, B13:5 vs. depth, A4:119; B13:10–11
remanent magnetization, characteristic basaltic basement, A4:32–33 magnetic domains, A3:28–29 sediments, B13:4–5
remanent magnetization, isothermal acquisition curves, A3:108; A4:120 pillow basalt, A4:30 serpentine mud, A3:27
remanent magnetization, natural demagnetization curves, A3:109 magnetic intensity, A3:26–28 pillow basalt, A4:30 sediments, A5:10; B13:4–5 vs. depth, B13:10–11
remanent magnetization, saturation isothermal alternating-field demagnetization, A3:112 magnetic domains, A3:28–29 pillow basalt, A4:30
resistivity logs vs. depth, A1:54; A4:153 See also deep resistivity logs; shallow resistivity logs
retrograde metamorphism, mud volcanoes, A1:11
rheology, seamounts, A1:8
rock magnetics mud volcanoes, A3:26–28, 155 paleomagnetism, A4:29–30 sediments, B13:5
rosette texture, basalt, A4:21–22
rotation, plates, A1:18
ROV operations, configuration, A4:61
rubidium, geochemistry, B1:11
rubidium/ytterbium ratio, vs. aluminum oxide, B4:36
Ryukyu arc-trench system, geology, A1:23–27

S

salinity, vs. depth, B10:4
samarium. See lanthanum/samarium ratio
sand lithologic units, A5:7–8 See also silt/sand ratio
sandstone lithologic units, A4:11–14 logs, A4:77 photograph, A4:78 photomicrograph, A4:89–90 tectonic genesis, A4:87
sandstone, volcaniclastic, photograph, A4:78
scandium, vs. ytterbium, B4:35
schists origin, B4:9–10 rare earths, B:48–9 See also amphibole mica schist; amphibole schist; chlorite schist; chlorite-tremolite schist; glaucophane schist; greenschist; mica-chlorite schist; talc schist
scoria, reddish oxidized, photomicrograph, A4:86
Scotia Trench, geology, B1:3–4
sea level changes sedimentary regimes, B3:9–12 vs. age, B3:26–27
seafloor instruments, configuration, A4:52–58
seamounts forearcs, B4:2–3 mud flows, A1:4
seamounts, serpentinite, synthesis, B1:1–30
seawater-peridotite interaction, geochemistry, B4:5–7
sedimentary regimes, Neogene, B3:8–10
sedimentary structures, photograph, A4:81
sedimentation environment, A4:95; B2:27 geology, A1:60 paleoenvironment, A4:17–19 Quaternary, B3:1–31 turbidity currents, A5:8 vs. depth, A4:70–72
sedimentation rates geology, A1:23–27 magnetostratigraphy, A4:32 Quaternary, B3:12 vs. age, B3:27 vs. depth, A1:58
sediments crust, B2:7–9 geochemistry, A3:34–37; A4:207 natural gamma ray spectra, B12:1–33 paleomagnetism, B13:1–14 petrography, A4:14–16 recovery, B3:20 X-ray diffraction data, A4:93, 192–193
seismic observatories plate tectonics, B2:15 plates, A1:20–22 See also borehole seismic observatories
seismic profiles side-scan imagery, A1:36 Site 1200, A1:37, 48, 62 Site 1201, A4:68–69, 157 Site 1202, A5:19
seismic properties, serpentinite, B11:1–12
seismic records, synthesis, A4:146
seismic reflection, geology, A1:15–16
seismic refraction, crust and mantle, B2:22
seismic stations, location, A1:46
seismic structure, deep, crust and mantle, B2:3
seismic waves, mantle, B2:4–7
seismometers. See borehole seismometers
serpentine geology, A1:3–4 lithologic units, A3:12–13 mud, A3:18–20 photomicrograph, A3:72–74, 89 vs. depth, A3:76–78
serpentine, clast-poor, photograph, A3:69
serpentine, clast-rich, photograph, A3:70
serpentine, silty clay photograph, A3:68 photomicrograph, A3:72–74
serpentine flakes, photomicrograph, A3:72–74
serpentine mud comparison with serpentinized peridotite, B4:6–7 Coryell-Masuda diagram, B4:25 fluid-mobile elements, B4:8, 32 geochemistry, B4:1–49 halogens, B5:18 iodine and boron, B5:1–18 origin, B4:9 shearing, A3:55
serpentine mud volcano, convergent plate margins, A1:2–14
serpentinite clasts, A3:60–63 composition, A3:102; B1:9–13 geochemistry, A3:20–21; B1:15–16 halogens, B6:8–10 photograph, A3:96, 140–142 photomicrograph, A3:98 seismic properties, B11:1–12 X-ray diffraction data, A3:14–15, 75
serpentinite seamounts, synthesis, B1:1–30
serpentinization dunite, A3:18 harzburgite, A3:17 peridotite, A1:11–15 seismic properties, B11:3–5 tectonics, A3:53–54 veins, A3:138–139
shallow resistivity logs, vs. depth, A4:153
shear strength clasts, A3:43 pelagic muds, A4:39 sediments, A5:13
shear strength, peak, vs. depth, A3:129; A4:148; A5:36
shear wave velocity serpentinite clasts, B11:1–12 vs. compressional wave velocity, B11:10
shearing harzburgite, A3:17 serpentine mud, A3:55
Shimajiri Group, sedimentation, B3:2–3
sideromelane, petrography, A4:16
signal/noise ratio, mantle, B2:5
silica basalt, B8:8 metamorphic clasts, B4:7–8 pore water, A3:33, 35–37 vs. calcium oxide, B4:26 vs. depth, A3:117; A4:134 vs. magnesium oxide, B4:19, 26 vs. sodium oxide + potassium oxide, A4:111
silica/magnesium oxide ratio serpentinized peridotite compared with serpentine mud, B4:6–7 vs. aluminum oxide, B4:20, 28 vs. boron, B4:30 vs. calcium oxide, B4:21, 28 vs. iron oxide, B4:21 vs. lithium, B4:30 vs. loss on ignition, B4:18 vs. titanium oxide, B4:20, 29
silicon basalt paragenesis, B8:7 sediments, A4:36 vs. depth, B10:7 vs. total aluminum in clinopyroxene, B8:17 See also iron + silicon
silicon/magnesium ratio metamorphic clasts, B4:8 serpentinite, A3:20
silt, vs. age, B3:26
silt, clayey, lithologic units, A5:7–8
silt/sand ratio, vs. age, B3:23
siltstone, photomicrograph, A4:85
siltstone, sandy, photomicrograph, A4:91
Site 778, serpentinite mud, B4:1–49
Site 779 iodine and boron, B5:1–18 serpentinite mud, B4:1–49
Site 1200, A3:1–173 background and objectives, A3:3–4 biostratigraphy, A3:21–25 borehole instrumentation, A3:46–52 coring summary, A3:145–147 geochemistry, A3:29–40 halogens, B6:1–23 igneous and metamorphic petrology of ultramafics, A3:16–21 iodine and boron, B5:1–18 lithostratigraphy, A3:11–15 microbiology, A3:45–46 operations, A3:4–10 paleomagnetism, A3:26–29 physical properties, A3:40–45 principal results, A3:1–3 seismic properties, B11:1–12 serpentinite mud, B4:1–49 serpentinite seamounts, B1:1–30 site description, A3:1–173 stable isotopes, B7:1–12 structural geology, A3:52–56 summary, A1:2–14
Site 1201, A4:1–233 background and objectives, A4:3–6 basalt mineralogy, B8:1–24 biostratigraphy, A4:23–28 borehole instrumentation, A4:44–61 coring summary, A4:189–191 downhole measurements, A4:41–44 geochemistry, A4:33–36 igneous petrology, A4:20–23 ion seismic observatory, A1:14–22 lithostratigraphy, A4:10–19 natural gamma ray spectra, B12:1–33 operations, A4:6–10 paleomagnetism, A4:28–33 physical properties, A4:36–40 pore water, B9:1–14 principal results, A4:1–3 site description, A4:1–233 summary, A1:14–22 synthesis, B2:1–27
Site 1202, A5:1–46 background and objectives, A5:2–4 biostratigraphy, A5:8–9 coring summary, A5:41–43 geology, A1:22–27 lithostratigraphy, A5:6–8 operations, A5:5–6 paleomagnetism, A5:9–11; B13:1–14 physical properties, A5:11–14 pore water, B10:1–9 principal results, A5:1–2 site description, A5:1–46 summary, A1:22–27 synthesis, B3:1–31
slab/mantle interface, elemental recycling, B4:10
slate chips, vs. age, B3:24
smear slides, lithologic units, A4:14; A5:7–8
smectite seamounts, B1:6 sedimentary regimes, B3:9 sediments, A1:22
sodium basalt, A4:22–23 pore water, A3:30–33; A4:34–36; B9:3–4 sediments, A4:36 vs. depth, A1:55; A3:114; A4:133; B2:25; B9:7; B10:5
sodium/chloride ratio pore water, A3:30–33 seawater-peridotite interaction, B4:6 vs. depth, A1:45; A3:114; B10:5
sodium oxide basalt, A4:22–23; B8:8 vs. depth, A4:110
sodium oxide + potassium oxide, vs. silica, A4:111
sodium-rich rims, photomicrograph, A4:106
soft-sediment deformation, lithologic units, A3:11–12
solid solution, photomicrograph, A4:90
South Chamorro Seamount serpentine mud volcano, A1:2–14 serpentinite mud, B1:5; B4:1–49
specific storage, A3:44; A6:1–15
"Sphenolithus problem," biostratigraphy, A4:25
spherulites, photomicrograph, A4:84, 89, 107
spherulitic texture, basalt, A4:21–22; B8:4–5
spinel basalt, B8:16 basalt paragenesis, B8:6–7 microprobe data, B8:24 peridotite, A1:12; B1:10 See also chromium spinel
stable isotopes, pore water, B7:1–12
strontium basalt, A4:22–23 pore water, A3:33, 35–37; B1:8 seawater-peridotite mud interaction, B4:6 serpentinized peridotite compared with serpentine mud, B4:7 vs. depth, A3:116; A4:110, 134; B6:21; B10:6 vs. titanium oxide, B4:23
structural geology, A3:52–56
subduction forearcs, B1:3–5; B4:2–3 serpentine mud, B5:1–18
subduction zones biosphere, A1:7 volatiles, B6:9–10
subophitic texture basalt, B8:4–5 photomicrograph, A4:109; B8:13
sulfate pore water, A3:30–40; A4:34–36; B7:1–12; B9:3–4 sulfur isotopes, B7:12 vs. depth, A1:45; A3:115; A4:132; B7:7–8; B9:8; B10:5
sulfate reduction, pore water, A3:32–40
sulfide pore water, A3:30–33; B7:1–12 vs. depth, B7:7
sulfur sediments, A3:162 vs. depth, A3:119; B7:8
sulfur isotopes sulfate, B7:12 vs. depth, B7:8–9
suprasubduction, basalt, B1:1–17

T

talc lithologic units, A3:14 vs. depth, A3:76–78
talc schist, photograph, B4:15
tectonic discrimination diagram, basalt, A1:59
tectonic drift, plates, A1:18
tectonics Quaternary paleoceanography, B3:2–3 serpentinization, A3:53–54; B1:2–4
temperature clasts, A3:44–45 logs, A4:44 pelagic muds, A4:40 sediments, A5:13–14 vs. time, A3:132; A4:151, 156; A5:38
temperature, in situ, sediments, A3:170
temperature, sea-surface, vs. age, B3:25–26
tephra, petrography, A4:14–16
Tertiary, paleoclimatology, A1:18
thermal conductivity clasts, A3:41 pelagic muds, A4:40 sediments, A5:13 vs. depth, A3:123, 130; A4:150; A5:37
thermal resistivity vs. depth, A5:39 vs. temperature, A5:40
thermomagnetism, sediments, B13:13
thermoremanence, sediments, B13:5
thorium natural gamma ray spectra, B12:6–9, 33 vs. depth, B12:19 vs. ytterbium, B4:34 See also niobium/thorium ratio
thorium/neodymium ratio, schists, B4:9
thorium logs, vs. depth, A4:154
Thvera Subchron magnetostratigraphy, A4:31 sediments, A1:21
titanium basalt, A4:23, 112 basalt paragenesis, B8:7 sediments, A4:36 total aluminum in clinopyroxene, B8:17 vs. vanadium, A1:59; A4:113; B2:26 See also potassium/titanium ratio
titanium oxide basalt, A1:59; A4:114; B8:8 serpentinite, A3:20 serpentinized peridotite compared with serpentine mud, B4:7 vs. aluminum oxide, B4:23, 27 vs. boron, B4:31 vs. calcium oxide, B4:24 vs. silica/magnesium oxide ratio, B4:20, 29 vs. strontium, B4:23 vs. vanadium, B4:24
Tonga Trench, geology, B1:2–4
Torishima Forearc Seamount, geology, B1:5
trace elements metabasite, B4:44–47 serpentine mud, B4:17, 37–43 serpentinite, A3:20–21; B1:12–13
trench axis, seismic properties, B11:3–4
turbidite crust, B2:8–9 logs, A4:77 paleoclimatology, A1:27 sediments, A1:20–22
turbidite, silty claystone, photograph, A4:78
turbidity currents mud volcanoes, A3:15 paleoenvironment, A4:17–19 sedimentation, A5:8

U

ultramafics petrology, B1:12–15 X-ray diffraction data, A3:148–149
ultramafics, altered, lithologic units, A3:11–12
unconformities, sediments, A1:21
uplifts, geology, A1:23–27
upwelling halogens, B6:9–10 sediments, A3:35–37
uranium natural gamma ray spectra, B12:6–9, 33 vs. depth, B12:19
uranium logs, vs. depth, A4:154

V

vanadium basalt, A4:23 vs. titanium, A1:59; A4:113; B2:26 vs. titanium oxide, B4:24
veins harzburgite, A3:17 metamorphism, A3:54 photograph, A3:140–142; A4:101–102 serpentinization, A3:138–139
veins, chrysotile photograph, A3:82, 90–91 photomicrograph, A3:92
veins, serpentine, photomicrograph, A3:88, 92
velocity spectra, B2:20 vs. density, B1:4–5; B11:9 vs. depth, A4:145 See also compressional wave velocity; shear wave velocity
velocity anisotropy, vs. depth, A4:147
velocity anomalies, mantle, B2:5
velocity logs, vs. depth, A1:54; A4:153
vent communities, serpentine, A1:13
vesicles petrography, A4:16 photograph, A4:96, 100–102, 107–109 photomicrograph, B8:13
vitrophyre, petrography, A4:14–16
vitrophyre fragments, photomicrograph, A4:85–86, 89
void ratio, sediments, A3:169
volatiles, subduction zones, B6:9–10
volcanic ash fall, sediments, A1:18
volcanic glass basalt, A4:21–22; B8:4–5 photograph, A4:97–98, 100–102
volcanic grains, vs. age, B3:24
volcanic rocks, petrography, A4:20–22
volcaniclastics crust, B2:8–9 lithologic units, A4:12–14 petrography, A4:14–16 sediments, A1:20–22

W

water content sediments, A3:162; B1:5–6 vs. depth, A3:119
well-logging, operations, A4:152, 223–224
well-logging Unit l, lithology, A4:43
well-logging Unit 2, lithology, A4:43
well-logging units, A4:42–44
West Philippine Basin ion seismic observatory, A1:14–22 synthesis, B2:1–27

X

X-ray diffraction data basalt, A4:194 clay minerals, A4:94 sediments, A4:16–17, 93, 192–193 serpentinite, A3:14–15, 75 ultramafics, A3:148–149

Y

ytterbium vs. neodymium, B4:34 vs. scandium, B4:35 vs. thorium, B4:34 See also barium/ytterbium ratio; rubidium/ytterbium ratio
yttrium basalt, A4:23, 112 vs. chromium, A1:59; A4:115

Z

zeolite cement lithologic units, A4:13–14 photograph, A4:80
zeolites basalt, A4:21–22 lithologic units, A3:14; A4:11–12 petrography, A4:14–16 photomicrograph, A4:89–92, 105 pore water, A4:34–36 sediments, A1:20 vs. depth, A3:76–78 X-ray diffraction data, A4:94
zeolites, reworked, photomicrograph, A4:84
zinc sulfide, pore water, A3:33
zirconium, basalt, A4:23, 112