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Geologic processes in marine “muddy” sediments
The Journal of the Acoustical Society of America, 2022Marine muds, or “muddy” sediments, represent a broad range of sediments containing a mix of clay and silt size components, often with some smaller amount of sand sized and larger material. Sediments characterized by these broad definitions comprise most of the modern global seafloor, except for areas proximal to terrigenous inputs, such as continental ...
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Deep-sea sediments and their geological record
Earth-Science Reviews, 1966Summary The more common types of deep-sea sediments are pelagic clays and calcareous or siliceous lutites rich in the remains of planktonic Protozoa and Protophyta. Accumulation of the various biogenous and mineral elements may take place by settling from the water column above; by transport along the bottom by submarine solifluction, slumping and ...
Cesare Emiliani, John D. Milliman
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Improvement of Geological Models Using Sedimentation Data
Geomodel 2021, 2021Summary There is a modern problem of the accuracy of the construction of geological models. Geological strata have a high degree of heterogeneity in the section and in the area. As a result, there is an incorrect assessment of hydrocarbon reserves.
D.Yu. Chudinova, E.M. Makhnytkin
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Constraining flow and sediment transport intermittency in the geological past
Geological Society of America Bulletin, 2022Quantitative investigations of ancient rivers usually provide insights into either instantaneous or mean flow conditions. There is a critical gap between these time scales of investigation, which reflects the intermittency of flow and sediment transport, and closing this gap is crucial to fully explore the dynamics and evolution of ancient fluvial ...
Lyster, Sinéad J. +3 more
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Lake Winnipeg: geological setting and sediment seismostratigraphy
Journal of Paleolimnology, 1998Lake Winnipeg, the seventh largest lake in North America, is located at the boundary between the Interior Plains and the Canadian Shield in Manitoba, Canada. Seismic profiles were obtained in Lake Winnipeg on two geoscientific cruises in 1994 and 1996. These data indicate the morphology of the bedrock surface. In most cases, a clear distinction between
B. J. Todd +5 more
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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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Self-sedimentation of phytoplankton blooms in the geologic record
Sedimentary Geology, 1997Abstract Understanding the formation of laminated, organic-rich sediments is an essential topic for researchers interested in fossil fuels, biogeochemical cycles, Earth's environmental history and global change. Biologists have very recently demonstrated that some marine phytoplankton blooms actively govern their own sedimentation by the formation of
Kurt A. Grimm +2 more
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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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Appraisals of hydrocarbon potentials of sediments on geological premises
International Geology Review, 1971Prospecting risks, in exploratory drilling for oil and gas, as in Permian and Triassic formations, in a part of the Caucasian piedmont, may be reduced significantly by preliminary analysis of the following indications: mineralogical-geochemical facies of diagenesis; associations of clay minerals; metamorphism of sediments and organic substance (table 1)
M.S. Burshtar +2 more
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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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