Global ETD Search
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Showing 1 to 7 of 7 for “"playa lake"”.
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Remote sensing assessment of rapidly changing lake areas in semi-arid closed basins : modern playa lake response to meteorological variability and implications for pluvial Lake Palomas Holocene highstands
Closed basin lakes provide important data on paleo- and modern environmental conditions because of their sensitivity to climate variability, particularly variations in precipitation. In arid and semi-arid regions throughout the world, playas play an important role in biological communities, …
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Seismic site characterization via joint modeling of horizontal-to-vertical spectral ratios and surface wave dispersion : developing and validating a geophysical tool for deciphering Quaternary stratigraphic architecture of the Monahans dune field, West Texas.
… well as buried clay, carbonate-rich soils, and playa lake deposits. The complex and discontinuous stratigraphy of Monahans is difficult to capture without extensive borehole investigation. Shallow seismic techniques using Horizontal-to-Vertical Spectral Ratios (HVSR) and surface wave dispersion …
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Depositional Environments of Siliceous Laminites in the Laney Member of the Green River Formation, Sublette County, Wyoming
… near-shore, oxygenated saline - alkaline lake environment, as inferred from (1) the association of stromatolites , mud-cracked dolomicrites and ostracodal micrite, (2) fossil occurrences of Knightia (Herring-type fish) and Equisetum (horsetail), Astephus (catfish), Amyzon (sucker ) and (3) …
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Depositional and Diagenetic History of the Permian Unayzah A Reservoir, South Haradh, Saudi Arabia with Implications for Deep Gas Exploration and Development
… dune, sand sheet, interdune and ephemeral (playa) lake facies. Diagenetic products in Unayzah A developed during a continuum of eogenetic and mesogenetic reactions. Early or eogenetic cements are dominated by clay rims that formed at temperatures below 70oC. Oil migration along stylolites …
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Stratigraphic and structural evolution of the early Diligencia Basin, Orocopia Mountains, Southeastern California
… and that interfingered with deposits of a playa lake complex that formed in the basin interior. The age of these deposits, basin geometry, and the style of sedimentation are very reminiscent of half-graben basins known from the Colorado River Extensional Corridor of the Basin and Range. …
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Plio-Pleistocene Drainage Evolution of The Vera Basin, SE Spain
… fan system intercalated with an evaporitic playa lake. A third drainage system in the northwest of the basin (Salmeron) developed within a topographic low between the two fan systems. An increase in structural activity towards the end of the Salmeron Formation was characterised by a basin …
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At the water's edge: an archaeological investigation of playa occupation in the Central Plains
Playa research on the American Great Plains has considerable potential to shed light on ancient hunter-gatherer lifeways and subsistence. These lacustrine environments provide a predictable water source and are ecological hubs for many species of mammals, waterfowl, and vegetation. The availability …