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(Table 2) Sr, O and D isotope ratios and water content of altered basement ro...
This dataset has no description
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(Table 1) Properties and hydrothermal alteration of DSDP Hole 504B
This dataset has no description
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(Table 1) Strontium concentrations and isotope ratios of anhydrite from DSDP/...
In samples from 1575 to 1982 mbsf anhydrite leached from whole-rock powders. 87Sr/86Sr and Sr/Ca determined following methods described in (Teagle et al., 1996,... -
(Table 2) Nd- and Pb-isotopic composition of basalts from DSDP/ODP Hole 504B
Pb-isotopic ratios are reported relative to values of 206Pb/204Pb=16.9322, 207Pb/204Pb=15.4855, and 208Pb/204Pb=36.6856 for the NBS-981 standard. Actual measured values for... -
(Table 1) Major and trace element composition of basalts from DSDP/ODP Hole 504B
This dataset has no description
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(Table 1) Compressional and shear wave velocities and elastic constants of DS...
Compressional and shear wave velocities at confining pressures to 6 kb, densities, and porosities were measured for 32 samples obtained from 836 to 1350 m below seafloor (BSF)... -
(Table 1) Downhole variation of potassium, apparent K-Ar age, and inert gas a...
Ne, Ar, Kr, Xe, and K2O were measured in representative samples of holocrystalline basalt from DSDP Hole 504B. No hiatus in inert gas abundance is recognized at the base of the... -
(Table 1) Strontium concentration and isotope ratios of carbonates from DSDP ...
Recent revisions of the geological time scale by Kent and Gradstein (in press) suggest that, on the average, Cretaceous magnetic anomalies are approximately 10 m.y. older than... -
(Table 1) Sulfur isotopes and description of anhydrite in DSDP Holes 70-504B ...
Anhydrite occurs in veins in hydrothermally altered basalts recovered from Hole 504B during Leg 83 of the Deep Sea Drilling Project. Sulfur isotopic data indicate that the... -
(Table 1) Age and depth of reflectors of the 3.5-kHz and airgun seismic recor...
DSDP cores from areas of low (Site 505) and high heat flow (Site 504 B) near the Costa Rica Rift, together with seismic profiles from the Panama Basin, have been studied to... -
Element analyses of DSDP/ODP Hole 504B basalt and breccia (Table 2)
Geochemical well logs were used to measure the dry weight percent oxide abundances of Si, Al, Ca, Mg, Fe, Ti, and K and the elemental abundances of Gd, S, Th, and U at 0.15-m... -
Thallium concentrations and isotope composition of MORB glasses and altered o...
Hydrothermal fluids expelled from the seafloor at high and low temperatures play pivotal roles in controlling seawater chemistry. However, the magnitude of the high temperature... -
(Table 1) B content, d11B, δ¹⁸O, degree of alteration, and lithology of basal...
Boron contents and boron isotopic compositions were determined for the uppermost 1.3 km section of typical 6.2 Ma oceanic crust from DSDP/ODP Hole 504B, Costa Rica Rift,... -
(Table 1) Sulfur contents and isotope composition in rocks and minerals from ...
DSDP Hole 504B is the only hole in oceanic crust to penetrate through the volcanic section and into hydrothermally altered sheeted dikes. We have carried out petrologic and...
