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Annotated record of the detailed examination of Mn deposits from DSDP Leg 55 ...
Leg 55 was conceived as part of the decade-long experiment to test the kinematic hot-spot hypothesis and several of its more imporant corollaries for the origin of the... -
Revised chronology of Neogene DSDP holes from the World Ocean
After nearly 30 years of growth in geochronologic knowledge, the originally published age models for many older deep sea marine sections have become badly outdated. In this... -
Geochemistry of the oceanic crust from ocean drilling samples
This book presents new data on chemical and mineral compositions and on density of altered and fresh igneous rocks from key DSDP and ODP holes drilled on the following main... -
Occurrence of hiatuses PH and NH 1 through NH 7 in DSDP holes
Miocene paleoceanographic evolution exhibits major changes resulting from the opening and closing of passages, the subsequent changes in oceanic circulation, and development of... -
(Table 1) Calculated paleoelevations of drillhole points 35 million years ago
This dataset has no description
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(Table 2) Survey of Pacific Ocean DSDP sites for hiatuses PH and NH 1 through...
This dataset has no description
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(Table S1) Diatom species richness from the Early Pleistocene to present
The extent to which the spatial distribution of marine planktonic microbes is controlled by local environmental selection or dispersal is poorly understood. Our ability to... -
Paleoelevations in the Pacific Ocean 35 million years ago
Data from deep sea drilling, linear magnetic anomalies and bathymetric measurements together with age and morphometric characteristics of seamounts have been used to construct a... -
New calibration of Neogene radiolarian events in the North Pacific
New age models for twelve Deep Sea Drilling Project sites in the North Pacific have been produced, based on (in order of importance in our dataset) a recompilation of previously... -
Sediment grain size and carbon/carbonate at DSDO Leg 55 Holes
CaCO3 content was determined on board ship by the "Karbonat Bomb" technique (Müller and Gastner, 1971). In this simple procedure, a sample is powdered and treated with HCl in a... -
Conventional and 40Ar/39Ar K-Ar ages of volcanic rocks at DSDP Leg 55 Holes
Conventional K-Ar, 40Ar/39Ar total fusion, and 40Ar/39Ar incremental heating data on hawaiite and tholeiitic basalt samples from Ojin (Site 430), alkalic basalt samples from... -
Reflection microscopy and geochemistry at DSDP Leg 55 Holes
Magnetic properties of volcanic rocks are controlled mainly by the physical and chemical state of their constituent ferromagnetic minerals. The most important parameters... -
Mineral chemistry of basalts at DSDP Leg 55 Holes
Microprobe mineral compositions of olivine, plagioclase, clinopyroxene, chrome spinel, ilmenite, and titanomagnetite are presented for 7 samples from 4 flows of hawaiite and one... -
Petrography and chemical composition of the lava flows at DSDP Leg 55 Holes
During DSDP Leg 55, volcanic rocks were recovered at Sites 430, 432, and 433, on Ojin, Nintoku, and Suiko seamounts, respectively, in the Emperor Seamount chain. Of the five... -
Trace-element geochemistry of tholeiitic basalts from DSDP Hole 55-433C
Hole 433C, a multiple re-entry hole drilled in 1862 meters of water on Suiko Seamount in the central Emperor Seamounts, penetrated 387.5 meters of lava flows overlain by 163.0... -
Mineralogy and geochemistry of sedimentary deposits at DSDP Leg 55 Holes
The four holes (including a re-entry hole) drilled at Site 433 allow determination of the sedimentary sequence of Suiko Seamount in the Emperor chain. The holes are in a... -
Neogene diatoms at DSDP Leg 55 Holes
Leg 55 of the Deep Sea Drilling Project started from Honolulu, Hawaii, on 23 July 1977 and terminated at Yokohama, Japan on 6 September, 1977. Eleven holes were drilled at 4... -
Description and geochemistry of DSDP Leg 55 Holes
One of the objectives of Leg 55 was to investigate the Tertiary history of sedimentation and environment on the Emperor Seamounts after their volcanic activity. For the three... -
Geochemistry at DSDP Leg 55 Holes
The tops of the Emperor chain guyots, which were drilled during Leg 55, lie above the carbonate compensation depth (CCD), as well as above the foraminiferal dissolution level,... -
Age determination and Argon geochemistry of Hawaiian Emperor seamounts
The Hawaiian-Emperor bend has played a prominent yet controversial role in deciphering past Pacific plate motions and the tempo of plate motion change. New ages for volcanoes of...
