Late Cretaceous subsidence in Wyoming: Quantifying the dynamic component

Research Article| May 01, 2004 Late Cretaceous subsidence in Wyoming: Quantifying the dynamic component Shaofeng Liu; Shaofeng Liu 1Faculty of Geosciences and Resources, China University of Geosciences, Beijing 100083, China, and Institute for Energy Research, Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071, USA Search for other works by this author on: GSW Google Scholar Dag Nummedal Dag Nummedal 2Institute for Energy Research, Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Shaofeng Liu 1Faculty of Geosciences and Resources, China University of Geosciences, Beijing 100083, China, and Institute for Energy Research, Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071, USA Dag Nummedal 2Institute for Energy Research, Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071, USA Publisher: Geological Society of America Received: 08 Nov 2003 Revision Received: 28 Jan 2004 Accepted: 30 Jan 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (5): 397–400. https://doi.org/10.1130/G20318.1 Article history Received: 08 Nov 2003 Revision Received: 28 Jan 2004 Accepted: 30 Jan 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation Shaofeng Liu, Dag Nummedal; Late Cretaceous subsidence in Wyoming: Quantifying the dynamic component. Geology 2004;; 32 (5): 397–400. doi: https://doi.org/10.1130/G20318.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Late Cretaceous Western Interior Basin of North America is generally considered to have been a retroarc foreland basin. Flexural backstripping of the stratigraphic record from 97.2 Ma to 73.4 Ma, along a section perpendicular to the Wyoming-Idaho salient of the Sevier belt, clearly demonstrates that there were components of subsidence in addition to those driven by the thrust and associated sediment loads. The simulation demonstrates that the flexural foredeep is only ∼180–120 km wide and shows a forebulge located near the subsequent Laramide Rock Springs uplift. Foredeep strata between the Rock Springs uplift on the east and the thrust front to the west were mostly involved in the eastward- overlapping thrust belt or deeply truncated by inferred rebound after 78.5 Ma. The difference between the observed, decompacted, cumulative subsidence and the amount of subsidence that can be explained by simple flexural loading, the “residual” subsidence, increases from ∼800 m in eastern Wyoming to ∼1.8 km near the thrust belt. The westward-thickening Upper Cretaceous sediment wedge filled the accommodation space generated by downward tilting to the west of the North American cratonic margin by underplating and mantle flow associated with the shallowly subducted Farallon plate. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.