Global ETD Search
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Showing 1 to 6 of 6 for “"incision history"”.
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Quaternary incision history of the Black Canyon of the Gunnison, Colorado
… Black Canyon. In the last 640ka, average bedrock incision rates surrounding the knickpoint are unbalanced and vary from 130-150 m/Ma (downstream) to 470-600+ m/Ma (within) to 90-95 m/Ma (upstream), necessitating knickpoint migration. The 640ka profile, reconstructed from terraces containing Lava …
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New constraints on the late Cenozoic incision history of the New River, Virginia
… fluvial terraces cut into this fill record an incision history for the river that includes several periods of stalled downcutting and aggradation. Cosmogenic 10-Be exposure dating, aided by mapping and sedimentological examination of terrace deposits, is used to constrain the timing of events …
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Surface uplift, fluvial incision, and geodynamics of plateau evolution, from the western margin of the Central Andean plateau
… in the Southern Hemisphere. Studying canyon incision history as a proxy for surface uplift offers a promising route to understanding how climate and tectonics have interacted throughout the evolution of the Central Andean plateau. In this thesis, a combination of bedrock low-temperature …
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The development of orogenic plateaus : Plateaus: case studies examining relationships between tectonics, crustal strength, surface deformation, and plateau morphology
… dating, and numerical modeling to describe the incision history of the Colorado River into the southwestern Colorado Plateau.
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Neotectonic evolution of Grand Canyon : interaction between volcanism, river incision, epeirogenic uplift, and faulting
… focuses on the effects of volcanism, river incision, epeirogenic uplift, and faulting on the landscape evolution of the Grand Canyon region. In the first chapter the migration of increasingly asthenospheric basaltic volcanism is used to constrain lithospheric modification of the Colorado …
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Uranium-series geochronology and stable isotope analysis of travertine from Soda Dam, New Mexico : a Quaternary record of episodic spring discharge and rivern incision in the Jemez Mountains hydrothermal system
… and geologic context with respect to incision rates of the Jemez River and the episodic nature of travertine deposition. The largest volume deposit (deposit A), high in the landscape on the west side of the river, yields stratigraphic ages ranging from >500 ka (outside of U-series …