Title: Plate detachment, asthenosphere upwelling, and topography across subduction zones
Abstract: Research Article| June 01, 1999 Plate detachment, asthenosphere upwelling, and topography across subduction zones Zohar Gvirtzman; Zohar Gvirtzman 1Department of Geophysics, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar Amos Nur Amos Nur 1Department of Geophysics, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Zohar Gvirtzman 1Department of Geophysics, Stanford University, Stanford, California 94305, USA Amos Nur 1Department of Geophysics, Stanford University, Stanford, California 94305, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (6): 563–566. https://doi.org/10.1130/0091-7613(1999)027<0563:PDAUAT>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 Permissions Search Site Citation Zohar Gvirtzman, Amos Nur; Plate detachment, asthenosphere upwelling, and topography across subduction zones. Geology 1999;; 27 (6): 563–566. doi: https://doi.org/10.1130/0091-7613(1999)027<0563:PDAUAT>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 This study analyzes the topography across subduction zones, considering the separate contributions of the crust and the mantle lithosphere to the observed surface elevation. We have found a transition from a region where the overriding plate is coupled to the descending slab and pulled down along with it to a region where the overriding plate floats freely on the asthenosphere. When the subducting slab retreats oceanward rapidly this transition is abrupt, and the edge of the overriding plate is uplifted. We propose that at some point during rapid slab rollback the overriding plate detaches and rebounds like a boat released from its keel. This event is associated with suction of asthenospheric material into the gap that is opened between the plates up to the base of the crust. As a result, the forearc uplifts, and magmatism in the arc increases. 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: 1999
Publication Date: 1999-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 84
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