-
Geochemistry of the oldest Atlantic oceanic crust
Controversy has surrounded the issue of whether mantle plume activity was responsible for Pangaean continental rifting and massive flood volcanism (resulting in the Central... -
U-Th dating of marine sediments from the Bahamas slope
In order to understand the driving forces for Pleistocene climate change more fully we need to compare the timing of climate events with their possible forcing. In contrast to... -
Geochemistry of basaltic rocks from ODP Hole 183-1137A on the Kerguelen Plateau
Cretaceous basalts recovered during Ocean Drilling Program Leg 183 at Site 1137 on the Kerguelen Plateau show remarkable geochemical similarities to Cretaceous continental... -
Geochemistry, and Nd- and Pb-isotopic composition of basalts from the upper o...
The DSDP/ODP Hole 504B, drilled in the 5.9 Ma southern flank of the Costa Rica Rift, represents the deepest section through modern ocean floor basaltic basement. The hole... -
Concentrations of trace elements, 10Be, and 26Al in marine opal from sediment...
Here, we provide evidence suggesting that marine (diatom) opal contains not only a high fidelity record of dissolved oceanic concentrations of cosmic ray-produced radionuclides,... -
U and Th concentrations and isotope ratios of samples from ODP Leg 166
Constraining the history of seawater (234U/238U) is important because this ratio is used to assess the validity of U/Th ages, and because it provides information about the past... -
Mineraly of oceanic crust from the Kane Transform, Mid-Atlantic Ridge
Gabbroic cumulates drilled south of the Kane Transform Fault on the slow-spread Mid-Atlantic Ridge preserve up to three discrete magnetization components. Here we use absolute... -
Geochemistry of volcanic glass from ODP holes 129-801C and 185-801C in the we...
Major element chemistry of basalt from the southern East Pacific Rise (EPR) is different from that of the EPR at the time of the formation of the Pacific Plate at 170 Ma.Glass... -
Radioisotopes and He accumulation in deep sea sediments of the Ontong Java Pl...
The accumulation of extraterrestrial 3He, a tracer for interplanetary dust particles (IDPs), in sediments from the Ontong Java Plateau (OJP; western equatorial Pacific Ocean)... -
Chemical and germanium isotopic compositions of sediments and sedimentary roc...
A new technique for the precise and accurate determination of Ge stable isotope compositions has been developed and applied to silicate rocks and biogenic opal. The analyses... -
Chemical and Sr isotopic compositions of pore fluids and marine carbonates fr...
The 87Sr/86Sr ratios and Sr concentrations in sediment and pore fluids are used to evaluate the rates of calcite recrystallization at ODP Site 807A on the Ontong Java Plateau,... -
Concentrations and isotopic compositions of low molecular weight hydrocarbons...
The presence of sedimentary organic matter blanketing midocean ridge crests has a potentially strong impact on metal transport in hydrothermal vent fluids. To constrain the role... -
Strontium concentrations and isotopic compositions of anhydrites from the TAG...
Sr isotope analyses have been conducted on anhydrite samples from the TAG (Trans-Atlantic Geotraverse) active hydrothermal mound (26°08?N, Mid-Atlantic Ridge) that have... -
Platinum-group, major, and trace element abundances in ODP Leg 183 basalts
Seventeen basalts from Ocean Drilling Program (ODP) Leg 183 to the Kerguelen Plateau (KP) were analyzed for the platinum-group elements (PGEs: Ir, Ru, Rh, Pt, and Pd), and 15... -
Molecular and isotopic properties of gases from ODP Holes of ODP Leg 204
We report and discuss molecular and isotopic properties of hydrate-bound gases from 55 samples and void gases from 494 samples collected during Ocean Drilling Program (ODP) Leg... -
Mineral, chemical and isotopic compositions of altered rocks at ODP Sites 193...
During ODP Leg 193, 4 sites were drilled in the active PACMANUS hydrothermal field on the crest of the felsic Pual Ridge to examine the vertical and lateral variations in... -
Uranium contents and isotope ratios of uranium and strontium in sediments, le...
Bulk dissolution rates for sediment from ODP Site 984A in the North Atlantic are determined using the 234U/238U activity ratios of pore water, bulk sediment, and leachates. Site... -
Biomarkers in turbidites at ODP Sites 157-951 and 157-952
Free and ester-bound lipid biomarkers were analysed in oxidised and unoxidised parts of four distinct turbidites from the Madeira Abyssal Plain (MAP), which contained 1 to 2%... -
Sulfur contents and S, C and O isotopic compositions in serpentinized peridot...
The opaque mineralogy and the contents and isotope compositions of sulfur in serpentinized peridotites from the MARK (Mid-Atlantic Ridge, Kane Fracture Zone) area were examined... -
Composition of matrix glasses and melt inclusions of fallout tephra from ODP ...
We studied the systematics of Cl, F and H2O in Izu arc front volcanic rocks using basaltic through rhyolitic glass shards and melt inclusions (Izu glasses) from Oligocene to...
