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 midoceanridge, petrology, B1:4–5

basalt, aphyric

photograph, A3:42

photomicrograph, A3:42

basalt, aphyric pillow

photograph, A3:43

photomicrograph, A3:43

basalt, enriched midoceanridge, possible Galapagos source, B2:8–9

basalt, midoceanridge, 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, alternatingfield, 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, OSN2, 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

OSN1, spectra, A1:23

OSN2, 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

splitcore section passthrough measurements, A3:17–18

vs. depth, A3:59–60

remanent magnetization, isothermal, discrete samples, A3:62

remanent magnetization, natural

splitcore section passthrough 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, welllogging, 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

midoceanridge 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, midoceanridge 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

welllogging

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