Two-phase stratigraphic model of foreland-basin sequences

Abstract

Research Article| June 01, 1988 Two-phase stratigraphic model of foreland-basin sequences Paul L. Heller; Paul L. Heller 1Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071 Search for other works by this author on: GSW Google Scholar Charles L. Angevine; Charles L. Angevine 1Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071 Search for other works by this author on: GSW Google Scholar Nancy S. Winslow; Nancy S. Winslow 1Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071 Search for other works by this author on: GSW Google Scholar Christopher Paola Christopher Paola 2Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455 Search for other works by this author on: GSW Google Scholar Geology (1988) 16 (6): 501–504. https://doi.org/10.1130/0091-7613(1988)016<0501:TPSMOF>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Paul L. Heller, Charles L. Angevine, Nancy S. Winslow, Christopher Paola; Two-phase stratigraphic model of foreland-basin sequences. Geology 1988;; 16 (6): 501–504. doi: https://doi.org/10.1130/0091-7613(1988)016<0501:TPSMOF>2.3.CO;2 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 Application of flexural models to nonmarine foreland-basin evolution indicates that two different stratigraphic styles of basin fill may develop over time. Basin subsidence is most rapid during times of thrust-load emplacement; associated sedimentation is coarse grained immediately adjacent to the thrust front and grades rapidly into fine-grained deposits that cover most of the basin. The distal part of the basin may also contain deposits derived from streams that flow from beyond the basin toward the thrust belt.Subsequent removal of the thrust load by erosion and other processes results in flexural rebound of the thrust belt and adjacent foreland basin. During this postorogenic phase of adjustment, a regional unconformity develops in the proximal part of the foreland basin. Proximal deposits, along with thrust-derived sediment, are redeposited in the distal foreland basin and beyond.This two-phase model of foreland sedimentation predicts that coarsening-upward sequences in the proximal and distal parts of the basin have reciprocal significance: the proximal sequence represents thrust-belt advance, whereas the distal sequence represents thrust-belt cessation. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.