Title: Cyclical behavior of thrust wedges: Insights from high basal friction sandbox experiments
Abstract: Research Article| February 01, 1996 Cyclical behavior of thrust wedges: Insights from high basal friction sandbox experiments Marc-André Gutscher; Marc-André Gutscher 1GEOMAR, Research Center for Marine Geosciences, University Kiel, Wischhofstrasse 1-3, D-24148, Kiel, Germany Search for other works by this author on: GSW Google Scholar Nina Kukowski; Nina Kukowski 1GEOMAR, Research Center for Marine Geosciences, University Kiel, Wischhofstrasse 1-3, D-24148, Kiel, Germany Search for other works by this author on: GSW Google Scholar Jacques Malavieille; Jacques Malavieille 2ISTEEM, Laboratoire de Géophysique et Tectonique, URA CNRS 1760, University of Montpellier II, Montpellier, France Search for other works by this author on: GSW Google Scholar Serge Lallemand Serge Lallemand 2ISTEEM, Laboratoire de Géophysique et Tectonique, URA CNRS 1760, University of Montpellier II, Montpellier, France Search for other works by this author on: GSW Google Scholar Author and Article Information Marc-André Gutscher 1GEOMAR, Research Center for Marine Geosciences, University Kiel, Wischhofstrasse 1-3, D-24148, Kiel, Germany Nina Kukowski 1GEOMAR, Research Center for Marine Geosciences, University Kiel, Wischhofstrasse 1-3, D-24148, Kiel, Germany Jacques Malavieille 2ISTEEM, Laboratoire de Géophysique et Tectonique, URA CNRS 1760, University of Montpellier II, Montpellier, France Serge Lallemand 2ISTEEM, Laboratoire de Géophysique et Tectonique, URA CNRS 1760, University of Montpellier II, Montpellier, France Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1996) 24 (2): 135–138. https://doi.org/10.1130/0091-7613(1996)024<0135:CBOTWI>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 Email Tools Icon Tools Get Permissions Search Site Citation Marc-André Gutscher, Nina Kukowski, Jacques Malavieille, Serge Lallemand; Cyclical behavior of thrust wedges: Insights from high basal friction sandbox experiments. Geology 1996;; 24 (2): 135–138. doi: https://doi.org/10.1130/0091-7613(1996)024<0135:CBOTWI>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 Scaled sandbox experiments with high basal friction, simulating the growth of accretionary wedges, display cycles alternating between frontal imbricate thrusting and underthrusting of long, undeformed sheets. By contrast, low basal friction experiments with otherwise similar and constant, initial conditions produce a classic frontal imbricate fan through repeated failure along frontal thrusts. The cyclical behavior observed in high basal friction experiments is expressed by three quantities: (1) the average spacing between frontal thrusts, (2) the advance and retreat of the deformation front, and (3) the frontal slope (Alpha) of the actively deforming wedge. As a long sheet is underthrust, the front is steepened through slumping until the maximum critical angle is reached. Then frontal thrusting resumes and the accretion of imbricate slices builds the wedge forward, thereby lowering the taper to the minimum critical angle. At shallow tapers, a long unit is underthrust and subsequently uplifts, shortens, and steepens the overlying wedge through backthrust deformation, thus completing the cycle. Underthrusting of long units offers a simple mechanism for underplating overlying units. It also provides a possible explanation for temporally and spatially varying wedge geometries in nature, when basal frictions attain 80%–90% of the internal friction. 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.
Publication Year: 1996
Publication Date: 1996-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 174
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