SUBJECT INDEX

A

age
basement, B1:2
vs. compressional wave velocity, B1:15
alkali basalt, zirconium/titanium ratio, A3:14
alteration
basalt, A3:15–17
photograph, A3:54–55
photomicrograph, A3:54–55
alteration degree, vs. depth, A1:25; A3:41
aluminum, volcanic glass, B2:4
aluminum oxide
volcanic glass, B2:3–8
vs. depth, A3:50
vs. iron oxide, B2:21
vs. magnesium number, A3:51
vs. magnesium oxide, A3:16–17, 24
vs. titanium oxide, B2:18–19, 23

B

barium/strontium ratio
vs. depth, A3:50
vs. titanium/zirconium ratio, A3:52
basalt
alteration, A3:15–17
composition, B2:35
enriched, transitional and normal, B2:1–36
mineral assemblages, A3:78
petrography, A3:10–12; B2:29
physical properties, A1:26; A3:65
textures, A3:11–12
basalt, alkalic mid-ocean-ridge, petrology, B1:4–5
basalt, aphyric
photograph, A3:42
photomicrograph, A3:42
basalt, aphyric pillow
photograph, A3:43
photomicrograph, A3:43
basalt, enriched mid-ocean-ridge, possible Galapagos source, B2:8–9
basalt, mid-ocean-ridge, petrology, B1:4–5
basalt, pillowed aphyric
photograph, A3:47
photomicrograph, A3:47
basalt, pillowed plagioclase and olivine phyric
photograph, A3:45–46, 48
photomicrograph, A3:45–46, 48
basalt, plagioclase and olivine phyric
photograph, A3:44
photomicrograph, A3:44
basalt, tholeiitic, petrology, B1:4–5
basement
age, B1:2
drilling, A1:7
lithologic units, A1:9–13; B2:12
lithology, A1:25
See also sediment/basement interface
basement units
characteristics, A3:77; B1:13
geochemical correlation, B2:5–8
summary, B1:3–5
borehole seismometers, deployment, A1:18
bulk density logs
vs. compressional wave velocity logs, A3:70
vs. depth, A1:27; A3:69, 73
vs. neutron porosity logs, A3:70

C

calcite
alteration, A3:15–17
within basalt, A3:8–9
calcium, volcanic glass, B2:4
calcium oxide
volcanic glass, B2:4–8
vs. iron oxide, B2:21
vs. magnesium oxide, A3:16–17, 24
vs. titanium oxide, B2:18–19, 23
caliper logs, vs. depth, A1:27, 29; A3:69, 73
coccoliths, calcite, A3:8
Cocos plate
conjugate points, B2:27
triple junction, B2:9
coercivity, paleomagnetism, B1:5
compressional wave velocity
vertical seismic profiling, B1:6–7
vs. age, B1:15
compressional wave velocity logs
vs. bulk density logs, A3:70
vs. neutron porosity logs, A3:70
vs. resistivity logs, A3:70
conjugate points, plate tectonics, B2:27
crust, oceanic
igneous rocks, B1:3–5
structure, A1:4–5

D

demagnetization, alternating-field, vectors, A3:61
demagnetization, overprint vs. sample position within a pillow, A3:63
demagnetization, thermal
discrete samples, A3:62
vectors, A3:61
density
basalt, A3:21
vertical seismic profiling, B1:6–7
density, grain
vs. porosity, A1:26; A3:65
vs. sonic velocity, A1:26; A3:65
vs. wet bulk density, A1:26; A3:65
density, wet bulk
vs. grain density, A1:26; A3:65
vs. porosity, A1:26; A3:65
vs. sonic velocity, A1:26; A3:65
density logs. See bulk density logs
Dipole Sonic Imager, waveform images, A3:71
downhole measurements, Site 1243, A3:22–27
DSDP holes, summary of those with penetration greater than 10 m in Pacific crust, A1:30
Dynamics of Earth and Ocean Systems, A1:2–5

E

East Pacific Rise, seafloor spreading, A1:3–4
Ekman velocity, satellite scatterometer data, A1:21

F

fecal pellets, peloids, A3:8
ferromagnetism, remanence, B1:6
foraminifers, calcite, A3:8
Formation MicroScanner imagery, vs. depth, A3:72, 74
fractionation, alkali basalt, A3:14

G

Galapagos spreading center, basalt, B2:8–9
gamma ray logs
vs. depth, A1:27; A3:69, 73, 75
vs. potassium logs, A3:70
vs. resistivity logs, A3:70
geochemistry
correlation with shipboard units, B2:5–8
Site 1243, A3:13–17
volcanic glass, B2:3–8
geostrophic velocity, satellite scatterometer data, A1:21
glassy rinds, petrography, A3:10–12

I

igneous rocks, summary, B1:3–5
iron
tholeiitic basalt, A3:13
volcanic glass, B2:4
iron oxide
volcanic glass, B2:3–8
vs. aluminum, calcium and magnesium oxide, B2:21
vs. magnesium oxide, A3:16–17, 24
vs. potassium and phosphorus oxides and sulfur, B2:20
vs. titanium oxide, B2:18–19, 23
iron oxyhydroxide, alteration, A3:15–17

L

Leg 203, principal results, A1:9–13
limestone
photograph, A3:40
within basalt, A3:8–9
lithologic units
basement, A1:9–13
Site 1243, A3:11–12
Unit 1, A3:11
Unit 2, A3:11
Unit 3, A3:11
Unit 4, A3:11
Unit 5, A3:12
Unit 6, A3:12
Unit 7, A3:12
Unit 8, A3:12
lithology, basement, A1:25
loss on ignition, vs. depth, A3:56

M

magnesium, volcanic glass, B2:4
magnesium number
tholeiitic basalt, A3:13
vs. aluminum oxide, A3:51
vs. titanium/zirconium ratio, A3:51
magnesium oxide
tholeiitic basalt, A3:13; B2:4–8
vs. aluminum, calcium and iron oxides, A3:16–17, 24
vs. iron oxide, B2:21
vs. potassium/titanium ratio, B2:26
vs. potassium oxide/titanium oxide ratio, B2:13, 22
magnetic declination, vs. depth, A3:60
magnetic inclination
magnetic polarity, A3:19–20
vs. depth, A3:57–60
magnetic intensity
magnetic susceptibility, A3:20
vs. depth, A3:57
magnetic polarity, magnetic inclination, A3:19–20
magnetic susceptibility
magnetic intensity, A3:20
vs. depth, A3:64
major elements, basalt, A3:13–15, 79
manganese oxide, calcite, A3:8
micrite, foraminiferal, photomicrograph, A3:40
micrite, within basalt, A3:8–9
microlites, plagioclase, limestone, A3:9
mineral assemblages, basalt, A3:78

N

Nazca plate, conjugate points, B2:27
neutron porosity logs
vs. bulk density logs, A3:70
vs. compressional wave velocity logs, A3:70
vs. depth, A1:27; A3:69, 73
nontronite, alteration, A3:15–17

O

observatories, OSN-2, A1:6–7, 15
ocean circulation
maps, A1:19
productivity, A1:4–5
ocean currents, velocity from satellite scatterometer data, A1:21
Ocean Seismic Network, frequency, A1:23
ODP holes, summary of those with penetration greater than 10 m in Pacific crust, A1:30
OSN-1, spectra, A1:23
OSN-2, observatories, A1:6–7
overgrowths, syntaxial, limestone, A3:9
oxidation, remanence, B1:6

P

Pacific Ocean E equatorial, geology, A1:1–30
Pacific plate
conjugate points, B2:27
triple junction, B2:8
paleomagnetism
Site 1243, A3:17–20
summary, A3:80–81; B1:5–6
partial melting, alkali basalt, A3:14
peloids, within basalt, A3:8–9
petrography, basalt, A3:10–12; B2:29
petrology, A3:10–13
phenocrysts, vs. depth, A1:25; A3:41
phosphorus oxide
volcanic glass, B2:4–6
vs. iron oxide, B2:20
physical properties
basalt, A1:26; A3:65
Site 1243, A3:20–22, 82
pillow texture, recovery rate, A3:12–13, 29–30
pipe vesicles, petrography, A3:10–12
plagioclase laths, limestone, A3:9
plate tectonics, conjugate points, B2:27
porosity
basalt, A3:21
vs. depth, A1:28; A3:66
vs. grain density, A1:26; A3:65
vs. sonic velocity, A1:26; A3:65
vs. wet bulk density, A1:26; A3:65
porosity logs. See neutron porosity logs
potassium/titanium ratio, vs. magnesium oxide, B2:26
potassium logs
vs. depth, A3:75
vs. gamma ray logs, A3:70
potassium oxide
volcanic glass, B2:3–8
vs. iron oxide, B2:20
vs. silica, A3:15; B2:25
See also sodium oxide + potassium oxide
potassium oxide/titanium oxide ratio
volcanic glass, B2:3–8
vs. magnesium oxide, B2:13, 22
productivity, ocean circulation, A1:4–5

R

recovery rate, pillow texture, A3:12–13, 29–30
remagnetization, remanence, B1:6
remanent magnetization, characteristic
discrete samples, A3:18–19
split-core section pass-through measurements, A3:17–18
vs. depth, A3:59–60
remanent magnetization, isothermal, discrete samples, A3:62
remanent magnetization, natural
split-core section pass-through measurements, A3:17–18
vs. depth, A3:57–58
resistivity logs
vs. compressional wave velocity logs, A3:70
vs. depth, A1:27; A3:69, 73
vs. gamma ray logs, A3:70

S

seafloor spreading, observatories, A1:6–7
sea height, altimetry, A1:20
sediment/basement interface, well-logging, A1:11–12
sedimentology, A3:7–9
seismic profiles
Site 1243, A3:33–38
See also vertical seismic profiling
seismic surveys, track lines, A3:31; B1:12
silica
tholeiitic basalt, A3:13
vs. potassium oxide, A3:15; B2:25
vs. sodium oxide + potassium oxide, A3:49; B2:14
Siqueiros Fracture Zone, triple junction, B2:8
Site 1243, A3:1–85
background and objectives, A3:4–5
basement units, A3:77
coring summary, A3:76
downhole measurements, A3:22–27
geochemistry, A3:13–17
location, A1:16
mid-ocean-ridge basaltic glass, B2:1–36
operations, A3:2–3, 5–7
paleomagnetism, A3:17–20
petrology, A3:10–13
physical properties, A3:20–22, 82
schematic representation, A3:39
scientific results, A3:3–4
sedimentology, A3:7–9
site description, A3:1–85
summary, A3:1–2
synthesis, B1:1–16
Site H2O, spectra, A1:23
sodium oxide, volcanic glass, B2:4–8
sodium oxide + potassium oxide, vs. silica, A3:49; B2:14
spar cement
calcite, A3:8–9
photomicrograph, A3:40
spectra, horizontal component, frequency, A1:24
spectra, vertical component, frequency, A1:23
spreading centers, basalt, B2:8–9
strontium. See barium/strontium ratio
sulfur
volcanic glass, B2:5
vs. iron oxide, B2:20

T

textures, basalt, Unit 8, A3:11–12
thorium logs, vs. depth, A3:75
titanium. See potassium/titanium ratio; zirconium/titanium ratio
titanium oxide
volcanic glass, B2:3–8
vs. aluminum, calcium and iron oxides, B2:18–19, 23
See also potassium oxide/titanium oxide ratio
titanium/zirconium ratio
basalt, A3:14
vs. barium/strontium ratio, A3:52
vs. depth, A3:50
vs. magnesium number, A3:51
vs. zirconium/yttrium ratio, A3:52
trace elements, basalt, A3:13–14, 79
trace elements, incompatible, tholeiitic and alkalic basalt, A3:53
traveltimes
vs. depth, B1:14
Well Seismic Tool, A3:21–22
triple junction, Siqueiros Fracture Zone, B2:8

U

uranium logs, vs. depth, A3:75

V

veins, alteration, A3:15–17
velocity
basalt, A3:21
basement, A1:12–13
velocity, sonic
vs. depth, A1:28; A3:66
vs. grain density, A1:26; A3:65
vs. porosity, A1:26; A3:65
vs. wet bulk density, A1:26; A3:65
velocity logs
vs. depth, A1:27; A3:69, 73
See also compressional wave velocity logs
vertical seismic profiling, oceanic crust, B1:6–7
Verwey transition, paleomagnetism, B1:5
vesicle fillings, alteration, A3:15–17
vesicles, petrography, A3:10–12
vesicularity, vs. depth, A1:25; A3:41
volcanic glass
geochemistry, B2:3–8, 28, 30–34
recovered samples, A3:85
See also glassy rinds
volcanic glass, mid-ocean-ridge basaltic, enriched, transitional and normal, B2:1–36

W

waveform images
casing bond logs, A3:68
Dipole Sonic Imager, A3:71
sonic tools, A3:67
well-logging
plans, A1:8–9
sediment/basement interface, A1:11–12
Well Seismic Tool
data summary, A3:83
interval velocities, A3:84
traveltimes, A3:21–22; B1:16

Y

yttrium. See zirconium/yttrium ratio

Z

zeolites, alteration, A3:15–17
zirconium. See titanium/zirconium ratio
zirconium/titanium ratio
alkali basalt, A3:14
basalt, A3:14
zirconium/yttrium ratio
basalt, A3:14
vs. titanium/zirconium ratio, A3:52