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Mineralogical and geochemical analyses of serpentines from ODP Hole 125-778A
Thirty-five samples from Hole 778A were prepared for X-ray diffraction (XRD) mineralogical analyses and for chemical analyses of major and trace elements. Most of the selected... -
Geochemistry of ODP Site 125-786 volcanic rocks
Eocene-Oligocene volcanic rocks drilled at Site 786 in the Izu-Bonin forearc cover a wide range of compositions from primitive boninites to highly evolved rhyolites. K-Ar dating... -
Petrology and geochemistry of the basement boninite series of ODP Site 125-786
The 720 m of igneous basement that was penetrated at Site 786 of Ocean Drilling Program Leg 125 consists of boninite-series volcanics. Bronzite andesites dominate the lithology... -
Geochemistry and mineralogy of ultramafic rocks from conical seamount
The Mariana arc-trench system, the easternmost of a series of backarc basins and intervening remnant arcs that form the eastern edge of the Philippine Sea Plate, is a well-known... -
Mineralogy and structural specification of ODP Leg 125 peridotite samples
Abundant serpentinite seamounts are found along the outer high of the Mariana forearc at the top of the inner slope of the trench. One of them, Conical Seamount, was drilled at... -
Geochemistry of igneous rock samples of ODP Site 125-786
A morphologically complex igneous basement was penetrated at Leg 125 Site 786 beneath approximately 100 m of Eocene-Pleistocene sediments at 31°52.45 'N, 141°13.59'E in a 3082-m... -
Geochemistry of glasses from ODP Site 125-786
Eleven glasses recovered from Holes 786A and 786B were fresh enough for volatile analysis by infrared spectroscopy. The compositions of these glasses range from boninitic to... -
Eocene to Quaternary benthic foraminifers from the Izu-Bonin Arc
The benthic foraminifer fauna at Sumisu Rift Sites 790 and 791 indicates that a deep open-ocean (>2300 m) or a basin with open-ocean access existed between 1.1 and 0.7 Ma at... -
Neogene and Quaternary radiolarians from the Izu-Bonin Forearc in the western...
Radiolarians were recovered from three of the five holes investigated during Leg 125. Relative abundances are estimated at Holes 782A and 784A, where preservation is poor to... -
Middle Eocene to early Oligocene planktonic and benthic foraminifers from ODP...
Drilling at Site 786, located in the center of the Izu-Bonin forearc basin, penetrated an apparently continuous section of middle Eocene/lower Oligocene volcaniclastic breccias... -
Middle Eocene to Miocene calcareous nannofossil of ODP Leg 125
During Ocean Drilling Program Leg 125, a thick sequence of middle Eocene to Pleistocene pelagic sediments, volcanogenic sediments, and predominantly extrusive volcanic rocks was... -
Late Miocene to Holocene calcareous nannofossils from ODP sites of Leg 125
During Leg 125 of the Ocean Drilling Program, nine sites were drilled in the Mariana and Izu-Bonin areas. The sediments recovered range in age from early Pliocene to late... -
Chlorine concentration and isotopic data for sediments and serpentine seamoun...
Chlorine isotope ratios were determined for volcanic gas, geothermal well, ash, and lava samples along the Izu-Bonin-Mariana volcanic front, serpentinite clasts and muds from... -
Stable isotope composition of O, H, S, and C from serpentinites of the Marian...
The Mariana and Izu-Bonin arcs in the western Pacific are characterized by serpentinite seamounts in the forearc that provide unique windows into the mantle wedge. We present... -
Geochemistry of ODP Leg 125 peridotites
Ocean Drilling Program Leg 125 recovered serpentined harzburgites and dunites from a total of jive sites on the crests and flanks of two serpen finite seamounts, Conical... -
Boron isotope ratios of samples from ODP Leg 125 sites at a serpentine seamou...
Serpentinite clasts and muds erupted from Conical Seamount, Mariana forearc, show substantial enrichment in boron (B) and 11B (delta11B up to +15 per mil ) relative to mantle... -
Strontium and neodymium concentrations and isotope compositions in fossil fis...
We analyzed Nd and Sr isotopic compositions of Neogene fossil fish teeth from two sites in the Pacific in order to determine the effect of cleaning protocols and burial... -
Major element composition of phenocrysts from the volcanic basement of ODP Ho...
Early arc volcanism during Eocene to Oligocene in the Izu forearc region was investigated during ODP Legs 125 and 126 in 1989, and effusive and intrusive volcanics were... -
P-wave velocity (PWS split-core system) on ODP Hole 125-786B
This dataset has no description
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P-wave velocity (PWS split-core system) on ODP Hole 125-784A
This dataset has no description
