Walker Lake Basin, Nevada: An Example of Late Tertiary (?) to Recent Sedimentation in a Basin Adjacent to an Active Strike-Slip Fault
Published:January 01, 1985
Martin H. Link, Michael T. Roberts, Mark S. Newton, 1985. "Walker Lake Basin, Nevada: An Example of Late Tertiary (?) to Recent Sedimentation in a Basin Adjacent to an Active Strike-Slip Fault", Strike-Slip Deformation, Basin Formation, and Sedimentation, Kevin T. Biddle, Nicholas Christie-Blick
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Walker Lake sedimentary basin is a fault-controlled continental basin related to strike-slip faulting on the western side of the Basin and Range Province of Nevada. The Walker Lake Basin is contained within a triangular crustal block bounded by normal-to oblique-slip faults on the west, left-lateral faults on the south, and right-lateral strike-slip faults on the east (Walker Lane shear zone).
Modern Walker Lake is roughly one fourth the surface area and the water depth of its Pleistocene precursor Carbon-rich (up to 2.5% total organic carbon) and uranium-rich sediments are currently accumulating in the deeper saline and anoxic parts of Walker Lake. If these conditions were to continue, significant potential hydrocarbon source rocks and uranium-bearing beds could accumulate.
Walker Lake Basin is being infilled by axially fed, sand-rich fluvial-deltaic deposits; side-fed, coarse-grained alluvial-fan/fan-delta deposits; and central fine-grained lacustrine deposits. Waves, wind, and lake-level fluctuations have caused reworking of the lower parts of fan-delta surfaces and the front (windward side) of the Walker River delta. Carbonate deposits, which include beach-rock horizons, stromatolites, oncolites, caliche, and tufas, locally form along the shorelines and spring areas of this predominantly coarsegrained clastic system.
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Strike-Slip Deformation, Basin Formation, and Sedimentation
This Special Publication is an outgrowth of a Research Symposium held at the 1984 joint meeting of SEPM and AAPG in San Antonio, Texas. In recent years a significant body of new geological and geophysical data on strike-slip basins had been acquired, and there had been significant progress in understanding the mechanisms by which basins form and deform in strike-slip settings. This volume emphasizes the relations between deformation patterns along strike-slip faults, the mechanisms by which basins form and the configuration of sedimentary facies within such basins.