Results 211 to 220 of about 8,835 (265)
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Geological Extrapolation and Pseud-Abyssal Sediments
AAPG Bulletin, 1942It is considered conceivable that the processes of dynamical geology which are active at the present day are unlikely to have been equally dominant throughout the whole of geological history. Late Neogene time has been a period of intense orogenic activity comparable with earlier epochs of the same character like those of the Caledonian and Hercynian ...
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The geological record preserved by Amazon shelf sedimentation
Continental Shelf Research, 1996Abstract A recent study of the subaqueous delta and coastal plain near the mouth of the Amazon River provides insight to the geological record created there and elsewhere. A compound clinoform structure is forming across the Amazon shelf. The uppermost portion is the shoreline, whose aggradation brings the modern sedimentary deposit to sea level and ...
Charles A. Nittrouer +7 more
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Phytolithic analysis of geological sediments from Panama
Antiquity, 1985The analysis of phytoliths, microscopic pieces of silica formed within the cells of living plants, is a recent addition to archaeobotanical studies in the New World (Carbone, 1977; Pearsall, 1978; Lewis, 1981; Robinson, 1983; Piperno, 1983, 1984, in press, a; Piperno & Clary, 1984). Because these mineralized bodies are very resistant to destruction
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Geological record of megatsunamis in Mediterranean deep sea sediments
2023The Mediterranean Sea hosts two subduction systems along the convergent Africa-Eurasia plate boundary that have produced strong ground shaking and generated tsunamis.  Based on historical descriptions and sedimentary records, one of these events, in 365 CE, impacted a broad geographical area qualifying it as a ‘megatsunami’.
Alina Polonia +7 more
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Sediment deformation beneath glaciers: Rheology and geological consequences
Journal of Geophysical Research: Solid Earth, 1987Experiments beneath Breidamerkurjökull in Iceland have led to development of flow laws for the subglacial till, relating strain rate to shear stress and effective pressure and assuming either Bingham fluid or nonlinearly viscous fluid behavior.
G. S. Boulton, R. C. A. Hindmarsh
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The Geological Deformation of Sediments
1994Introduction and overview. Mechanical principles of sediment deformation. Glacial deformation. Sedimentary deformational structures. Mass movements. Tectonic deformation - stress paths and strain histories. Fluids in deforming sediments. Melanges - illustrations of the dewatering, deformation, diagenesis interplay.
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Three-dimensional geological environment simulation of submarine exhalative sediments
Nonrenewable Resources, 1998On the basis of the major metal grades from the super-large Bainiuchang Ag-rich polymetallic ore deposit, enrichment evolution processes were divided into three populations by using a new multiple time-series model. Population 1 shows the highest temporal/spatial autocorrelation with the ore-forming processes.
Jin Youyu, Zhao Pengda
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Comparison of Geological and Engineering Parameters of Marine Sediments
Offshore Technology Conference, 1972Abstract Three-inch diameter piston cores collected from the Gulf of Mexico undergo a large number of geological and soil engineering tests in order to determine relationships between various physical parameters. Electrical resistivity logs are run to determine zones of interest.
Arnold H. Bouma +3 more
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Sediment Transport along the Southeast Mediterranean: A geological perspective
Geo-Marine Letters, 1984Sediment is being transported from the Nile Delta to the Israeli coast by a wave-induced longshore current carrying mainly sand, and by the geostrophic Mediterranean Current, detected in Earth Resources and Technology Satellite (ERTS) photographs through the presence of suspended sediments.
V. Rohrlicht, V. Goldsmith
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Sediments Behaviour at Basin and Geological Time Scales
61st EAGE Conference and Exhibition, 1999Basin modelling aims to reconstruct the accumulation of hydrocarbons at basin scale, and at geological time scale, taking into account the effects of kinematics displacements, sedimentation, erosion, compaction, temperatures history, overpressures and fluids flows (water and hydrocarbons).
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