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- 12 Stratigraphy (4)
- Historical Geology and Paleoecology; 20 Geophysics (2)
- 06 Petrology (1)
- 07 Marine Geology and Oceanography Calcareous composition; carbonate rocks; chalk; clastic sediments; density; Leg 130; marine sediments; Ocean Drilling Program; Ontong Java Plateau; ooze; Pacific Ocean; physical properties; porosity; sedimentary rocks; sediments; West Pacific (1)
- 07 Marine Geology and Oceanography; 20 Geophysics (1)
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- Applied Anisotropy; biogenic structures; bioturbation; body waves; calcareous composition; carbonate rocks; chalk; clastic sediments; elastic waves; Leg 130; measurement; Ocean Drilling Program; Ontong Java Plateau; ooze; P-waves; Pacific Ocean; sedimentary rocks; sedimentary structures; sediments; seismic waves; transition zones; velocity; West Pacific (1)
- Applied Arctic Ocean; biogenic processes; bulk density; Cenozoic; clastic rocks; diatomaceous earth; geophysical methods; geophysical surveys; impedance; Leg 104; lithostratigraphy; marine geology; neutron methods; Norwegian Sea; Ocean Drilling Program; oceanography; ODP Site 642; ODP Site 643; porosity; sedimentary rocks; seismic methods; seismograms; silica; stratigraphy; surveys; synthetic seismograms (1)
- Applied Carbonate rocks; deep-water environment; density; geophysical methods; Leg 130; Ocean Drilling Program; Ontong Java Plateau; Pacific Ocean; paleo-oceanography; physical properties; plateaus; reflection methods; sedimentary rocks; sedimentation; seismic stratigraphy; seismograms; synthetic seismograms; velocity; well-logging; West Pacific (1)
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- Historical Geology and Paleoecology Biostratigraphy; Cenozoic; correlation; Leg 130; Neogene; Ocean Drilling Program; Ontong Java Plateau; Pacific Ocean; physical properties; sedimentary rocks; sedimentation; sedimentation rates; stratigraphy; Tertiary; well-logging; West Pacific (1)
- Historical Geology and Paleoecology Biostratigraphy; Cenozoic; cycles; gamma-ray attenuation porosity evaluator; glacial environment; GRAPE; Leg 130; Milankovitch theory; Neogene; Ocean Drilling Program; ODP Site 806; Ontong Java Plateau; Pacific Ocean; paleoclimatology; Pliocene; Quaternary; statistical analysis; Tertiary; time series analysis; West Pacific N001906 N001907 E1592142 E1592140 (1)
- Historical Geology and Paleoecology; 02 Geochemistry Cenozoic; climate effects; cycles; evolution; Foraminifera; glaciation; ice; Invertebrata; isotope ratios; isotopes; Leg 130; microfossils; Neogene; O-18/O-16; Ocean Drilling Program; ODP Site 806; Ontong Java Plateau; oxygen; Pacific Ocean; planktonic taxa; Pliocene; Protista; stable isotopes; Tertiary; West Pacific N001906 N001907 E1592142 E1592140 (1)
- Igneous and Metamorphic Basalts; basement; Cretaceous; geophysical methods; geophysical surveys; igneous rocks; lava; Leg 130; Mesozoic; Ocean Drilling Program; Ontong Java Plateau; Pacific Ocean; pillow lava; reflection methods; seismic methods; surveys; volcanic features; volcanic rocks; West Pacific (1)
- Marine geology; geophysics; sedimentology; submersibles; earthquakes; continental slope; geophysical surveys; side-scan sonar; pleistocene; slope failures; bedforms; sands; gravels; mudstones; erosion; seafloor topography; Grand Banks; Grand Banks Earthquake; Quaternary (1)
- Sedimentary; 12 Stratigraphy (1)
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Articles 31 - 35 of 35
Full-Text Articles in Physical Sciences and Mathematics
Physical Properties Of Sediment Recovered On Deep Sea Drilling Project Leg 68 With The Hydraulic Piston Corer, Larry A. Mayer
Physical Properties Of Sediment Recovered On Deep Sea Drilling Project Leg 68 With The Hydraulic Piston Corer, Larry A. Mayer
Affiliate Scholarship
No abstract provided.
Erosion And Deposition In Interplain Channels Of The Maury Channel System, P. Lonsdale, C. D. Hollister, Larry A. Mayer
Erosion And Deposition In Interplain Channels Of The Maury Channel System, P. Lonsdale, C. D. Hollister, Larry A. Mayer
Affiliate Scholarship
Large turbidity currents originating on the insular margin of southern lceland have flowed clown a 2 500 km-long pathway comprising rise valleys, unchanneled plains and segments of erosional and depositional deep-sea channels that are collectively called the Maury Channel system. Two steep interplain reaches of the channel have been eut up to 100 m through volcanogenic turbidites of probable La te Pleistocene age. Near-bottom observations with side-scan sonars and profllers across the upper channels (at 59°24'N, 18°50'W, 2 750 m depth) and at the lower interplain channel (around 56°23'N, 24°25'W, 3 340 m depth) defmed their structure and morphology. The …
Near-Bottom Seismic Profiling: High Lateral Variability, Anomalous Amplitudes, And Estimates Of Attenuation, R. C. Tyce, Larry A. Mayer, F. N. Spiess
Near-Bottom Seismic Profiling: High Lateral Variability, Anomalous Amplitudes, And Estimates Of Attenuation, R. C. Tyce, Larry A. Mayer, F. N. Spiess
Affiliate Scholarship
For almost a decade the Marine Physical Laboratory of Scripps Institution of Oceanography has been conducting near‐bottom geophysical surveys involving quantitative seismic profiling. Operating initially at 4 kHz and more recently at 6 kHz, this system has provided a wealth of fine scale quantitative data on the acoustic properties of ocean sediments. Over lateral distances of a few meters, 7‐dB changes in overall reflected energy as well as 10‐dB changes from individual reflectors have been observed. Anomalously high amplitudes from deep reflectors have been commonly observed, suggesting that multilayer interference is prevalent in records from such pulsed cw profilers. This …
The Origin Of Fine Scale Acoustic Stratigraphy In Deep-Sea Carbonates, Larry A. Mayer
The Origin Of Fine Scale Acoustic Stratigraphy In Deep-Sea Carbonates, Larry A. Mayer
Affiliate Scholarship
In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates. A detailed survey was conducted of a small area in the equatorial Pacific with the Marine Physical Laboratory's Deep-Tow instrument package, providing high-resolution 4-kHz profiles and precise positioning of core samples. The cores were sampled at closely spaced intervals for sound velocity and saturated bulk density. Acoustic impedances were calculated, and a reflection coefficient log determined for the upper 10 m of the sediment column. The reflection coefficient log revealed no interfaces with large reflection coefficients that correlated …
Distribution Of Carbonate In Surface Sediments Of The Pacific Ocean, W. H. Berger, Charles Adelseck, Larry A. Mayer
Distribution Of Carbonate In Surface Sediments Of The Pacific Ocean, W. H. Berger, Charles Adelseck, Larry A. Mayer
Affiliate Scholarship
The distribution of carbonate on the floor of the Pacific has been remapped on the basis of 1313 points from 80 references stored in the World Ocean Sediment Data Bank of Scripps Institution of Oceanography. Percent distribution maps and carbonate versus depth diagrams generally agree with previously published information and reflect the major controlling factors of carbonate sedimentation (depth, hydrography, fertility, and sedimentary processes). While carbonate distributions are of limited use in attempting to construct dissolution profiles, major trends are identifiable. In particular, the degree of lowering of the equatorial calcite compensation depth (CCD) together with an estimate of the …