Ontong Java Plateau and late Neogene changes in Pacific plate motion
نویسندگان
چکیده
منابع مشابه
Multiple-ScS probing of the Ontong-Java Plateau
We use multiple-ScS phases recorded at Pohnpei from a 1996 deep earthquake under the Solomon Islands to investigate the shear velocity and attenuation characteristics of the upper mantle under the Ontong-Java Plateau in the Western Equatorial Pacific. Cross-correlation results indicate a vertical one-way travel-time under the plateau 3 s slow with respect to PREM, in agreement with previously o...
متن کاملRayleigh–wave tomography of the Ontong–Java Plateau
Ž . The deep structure of the Ontong–Java Plateau OJP in the westcentral Pacific is investigated through a 2-year deployment of four PASSCAL seismic stations used in a passive tomographic experiment. Single-path inversions of 230 Rayleigh waveforms from 140 earthquakes mainly located in the Solomon Trench confirm the presence of an extremely Ž . thick crust, with an average depth to the Mohorov...
متن کامل16. Late Neogene Paleoceanography in the Western North Pacific
Late Neogene paleoceanographic history in the western North Pacific is discussed on the basis of: (1) Td (diatom temperature) values, (2) species composition, and (3) the structure of diatom assemblages at Sites 579 and 580. These factors provide a record of fluctuations of the past position of the subarctic-subtropic front because these sites lie within the transition zone between the modern d...
متن کاملCretaceous Planktonic Foraminifers and Depositional Environments from the Ontong Java Plateau with Emphasis on Sites
Cretaceous planktonic foraminifers from Ocean Drilling Program (ODP) Leg 130 consist of two age groups: one dominantly Aptian in age and the other dominantly Maastrichtian. The oldest dated sediments from Ontong Java Plateau occur at ODP Site 807 and are assigned to the early Aptian Globigerinelloides blowi Zone. The assemblage correlates closely with Aptian foraminifers from Deep Sea Drilling ...
متن کاملDeep-sea carbonates: dissolution and mass wasting on ontong-java plateau.
Seismic reflection profiles and the structure of sediments in box cores from Ontong-Java Plateau indicate large-scale land sliding and sediment flow processes, respectively. The topographic morphology of sliding and slumping is depth- dependent, suggesting control by dissolution processes.
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2000
ISSN: 0148-0227
DOI: 10.1029/2000jb900290