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Minor-element chemical analyses of Hole 58-444A
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Chemical composition of zeolites in sandstones at DSDP Sites 445 and 446
Andesitic volcaniclastic sandstones of Middle Eocene age recovered from DSDP Sites 445 and 446, a back-arc basin, contain clinoptilolite, heulandite and analcite as a... -
Chemical and isotopic composition of basalts and basaltic glasses from Philip...
Basalts erupted from spreading centers on the Philippine Sea plate between 50 Ma and the present have the distinctive isotopic characteristics of Indian Ocean mid-ocean ridge... -
Oxygen and carbon isotope data from late calcite and zeolite pore-fill cement...
Oxygen isotopic composition of zeolite pore-fill cements in andesitic volcaniclastic sandstones recovered from DSDP Site 445 ranges from +30.1 to +17.8‰ (SMOW) downhole. This... -
Rhenium and platinum-group element concentrations and Os isotope data for Phi...
Platinum-group elements (PGE), rhenium and osmium isotope data are reported for basalts from Deep Sea Drilling Project cores in the Philippine Sea Plate (PSP). Lithophile trace... -
Step-heating degassing data for argon-39 from volcanic rocks drilled in the S...
From the experimental data on stepwise thermal release of neutron induced 39Ar (39K (n, p) 39Ar) from rocks and minerals, Arrhenius plots were constructed, which gave activation... -
Mineralogy at DSDP Legs 58-60
Sediments recovered by drilling during Legs 58, 59, and 60 in the North and South Philippine Sea have been analyzed by X-ray diffractometry. The CaCO3 content was measured... -
Geochemistry of carbon at DSDP Legs 58 and 59 Holes
I obtained 68 quarter sections of cores from the JOIDES Organic Geochemistry Panel for studying type, distribution, and stages of organic diagenesis of sedimentary organic... -
Radiolarians at DSDP Leg 58 Holes
Radiolarians were observed at all five sites drilled during DSDP Leg 58. Three sites (442, 443, 444) are south of Japan in the Shikoku Basin. The remaining two sites (445, 446)... -
Petrology and diagenesis of sandstones at DSDP Hole 58-445
The sandstone succession in the lower 240 meters of DSDP Site 445, on the Daito Ridge, provided an opportunity to evaluate the effect of burial diagenesis of sandstones in a... -
Geochemistry and petrographic characters at DSDP Leg 58 Holes
Refractive index and chemical composition were determined for glass shards contained in more than 100 tephra layers in DSDP Leg 58 sediment cores collected in the Shikoku Basin,... -
Conglomerate and sandstone petrography at DSDP Hole 58-445
Conglomerates and sandstones in lithologic unit V at DSDP Site 445 comprise lithic clasts, detrital minerals, bioclasts, and authigenic minerals. The lithic clasts are... -
Grain-size, carbona and calcium carbonate at DSDP Leg 58 Holes
Sand-silt-clay distribution was determined on 10-cm**3 sediment samples collected at the time the cores were split and described. The sediment classification used here is that... -
Stable-isotope evidence for the origin of secondary carbonate veins at DSDP L...
The stable-isotope composition of carbonate minerals is a function of the temperature and isotopic composition of the materials from which they were precipitated or... -
Geochemistry at DSDP Leg 58 Holes
Bulk chemical composition of 279 samples of argillaceous sediments from DSDP Sites 442, 443, and 444 in the Shikoku Basin (Leg 58) was determined and interpreted. Chemical... -
Organic carbon and nitrogen at DSDP Leg 58 Holes
The sediments penetrated on Leg 58 of the Deep Sea Drilling Project in the Philippine Sea represent long periods of geologic time during which depositional conditions apparently... -
Organic petrography and extractable hydrocarbons of sediments at DSDP Leg 58 ...
The quantity, type, and maturity of organic matter of Quaternary and Tertiary sediments from the Philippine Sea (DSDP Leg 58; Sites 442-446) were determined. Hydrocarbons in... -
40Ar-39Ar geochronological studies on rocks at DSDP Leg 58 Holes
The technique of 40Ar-39Ar step-heating dating was applied to three rock samples from core of DSDP Site 443, one sample from Site 445, and four samples at Site 446. All sites... -
Wet-bulk densities, mean atomic weights, effective porosities, grain densitie...
The effects of water saturation and open pore space on the seismic velocities of crystalline rocks are extremely important when comparing laboratory data to in situ geophysical... -
Geochemistry and minerals at DSDP LEg 58 Holes
Leg 58 successfully recovered basalt at Sites 442, 443, and 444, in the Shikoku Basin, and at Site 446 in the Daito Basin. Only at Site 442 did penetration reach unequivocal...