Geomorphology of the Burnt River, eastern Oregon, USA: Topographic adjustments to tectonic and dynamic deformation

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• 作者：Matthew Connor Morriss^a ; ^b ; ^{matthew.c.morriss@gmail.com} ; Karl W. Wegmann^a ; ^{karl_wegmann@ncsu.edu}
• 关键词：Strath terrace ; Fluvial incision ; Optically stimulated luminescence (OSL) ; Tephrochronology ; Quaternary stratigraphy ; Inland Northwest
• 刊名：Geomorphology
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：278
• 期：Complete
• 页码：43-59
• 全文大小：4266 K
• 卷排序：278

文摘

7 new Late-Quaternary terraces in NE Oregon were mapped. Strath terrace deposits were dated using tephrochronology and OSL dating. Landscape position of terraces indicate faulting at a rate of 2.5 ± 1.0 mm yr− 1. Incision rates ranged from 0.57 ± 0.2 to 0.21 ± 0.16 m ky− 1. Channel steepness appears largely controlled by faulting.