Abandonment of Unaweep Canyon (1.4 - 0.8 Ma), western Colorado; effects of stream capture and anomalously rapid Pleistocene river incision

Cosmogenic-burial and U-series dating, identification of fluvial terraces and lacustrine deposits, and river profile reconstructions show that capture of the Gunnison River by the Colorado River and abandonment of Unaweep Canyon (Colorado, USA) occurred between 1.4 and 0.8 Ma. This event led to a ra...

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Veröffentlicht in:	Geosphere (Boulder, Colo.) Colo.), 2014-06, Vol.10 (3), p.428-446
Hauptverfasser:	Aslan, Andres, Hood, William C, Karlstrom, Karl E, Kirby, Eric, Granger, Darryl E, Kelly, Shari, Crow, Ryan, Donahue, Magdalena S, Polyak, Victor, Asmerom, Yemane
Format:	Artikel
Sprache:	eng
Schlagworte:	Abandonment absolute age apatite burial Canyons Cenozoic clastic sediments Colorado Colorado River dates depositional environment digital terrain models erosion erosion rates exhumation fission-track dating fluvial environment fluvial features Freshwater geochronology Gunnison River knickpoints lacustrine environment landform evolution Mountains nesosilicates orthosilicates paleogeography paleolakes phosphates Piracy Pleistocene provenance Quaternary Quaternary geology reconstruction Regional relief Rivers sediments Shale silicates stream capture Streams topography U/Pb Unaweep Canyon Uncompahgre Uplift United States uranium disequilibrium western Colorado zircon zircon group
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