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Geophysical insights into the Transition fault debate: Propagating strike slip in response to stalling Yakutat block subduction in the Gulf of Alaska

2007; Geological Society of America; Volume: 35; Issue: 8 Linguagem: Inglês

10.1130/g23585a.1

1943-2682

S. P. S. Gulick, Lindsay Lowe, Terry L. Pavlis, James V. Gardner, Larry A. Mayer,

High-pressure geophysics and materials

Research Article| August 01, 2007 Geophysical insights into the Transition fault debate: Propagating strike slip in response to stalling Yakutat block subduction in the Gulf of Alaska Sean P.S. Gulick; Sean P.S. Gulick 1Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA Search for other works by this author on: GSW Google Scholar Lindsay A. Lowe; Lindsay A. Lowe 1Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA Search for other works by this author on: GSW Google Scholar Terry L. Pavlis; Terry L. Pavlis 2Department of Geological Sciences, University of Texas at El Paso, El Paso, Texas 79968-0555, USA Search for other works by this author on: GSW Google Scholar James V. Gardner; James V. Gardner 3Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, New Hampshire 03824, USA Search for other works by this author on: GSW Google Scholar Larry A. Mayer Larry A. Mayer 3Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, New Hampshire 03824, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Sean P.S. Gulick 1Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA Lindsay A. Lowe 1Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA Terry L. Pavlis 2Department of Geological Sciences, University of Texas at El Paso, El Paso, Texas 79968-0555, USA James V. Gardner 3Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, New Hampshire 03824, USA Larry A. Mayer 3Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, New Hampshire 03824, USA Publisher: Geological Society of America Received: 09 Jan 2007 Revision Received: 26 Mar 2007 Accepted: 04 Apr 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2007) 35 (8): 763–766. https://doi.org/10.1130/G23585A.1 Article history Received: 09 Jan 2007 Revision Received: 26 Mar 2007 Accepted: 04 Apr 2007 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Sean P.S. Gulick, Lindsay A. Lowe, Terry L. Pavlis, James V. Gardner, Larry A. Mayer; Geophysical insights into the Transition fault debate: Propagating strike slip in response to stalling Yakutat block subduction in the Gulf of Alaska. Geology 2007;; 35 (8): 763–766. doi: https://doi.org/10.1130/G23585A.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 On the basis of faulting mapped on seismic reflection and bathymetric data, seismicity, current plate motions, and evidence that the Yakutat block may be anomalously thick, we propose a tectonic model for Yakutat-Pacific interactions, including the often-debated Transition fault. To the east, deformation associated with the Queen Charlotte–Fairweather fault system is extending offshore, facilitating westward propagation of strike-slip motion along the eastern segment of the Transition fault. To the west, the oblique-slip Pamplona zone and Transition faults merge at an embayment in the continental margin, where a north-south dextral strike-slip fault within the Pacific plate, illuminated by the 1987–1992 earthquake swarm, intersects the Pacific-Yakutat tectonic boundary. These fault patterns are consistent with modern plate motions and reflect a plate boundary reorganization that may be caused by resistance to subduction by the Yakutat block, a possible moderate-sized oceanic plateau. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.