Thin anisotropic layer in the mantle wedge beneath northeast Japan

Abstract

Research Article| March 01, 2009 Thin anisotropic layer in the mantle wedge beneath northeast Japan Ikuo Katayama Ikuo Katayama * 1Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan *E-mail: katayama@hiroshima-u.ac.jp. Search for other works by this author on: GSW Google Scholar Geology (2009) 37 (3): 211–214. https://doi.org/10.1130/G25413A.1 Article history received: 19 Aug 2008 rev-recd: 16 Oct 2008 accepted: 21 Oct 2008 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ikuo Katayama; Thin anisotropic layer in the mantle wedge beneath northeast Japan. Geology 2009;; 37 (3): 211–214. doi: https://doi.org/10.1130/G25413A.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 distribution of seismic anisotropy in the mantle wedge beneath northeast Japan is inferred from deformation mechanisms: a lattice-preferred orientation and seismic anisotropy are generated by deformation via dislocation creep in the upper mantle, but not by diffusion creep or frictional sliding. Based on the thermal structure and stress field of the upper mantle beneath northeast Japan, deformation throughout most of the mantle wedge is inferred to be controlled by diffusion creep, and the region of dislocation creep is limited to a thin layer of 10–20 km thickness within a region of relatively high stress and low temperature located above the subducting slab and beneath the island arc crust. The relatively short delay time recorded in northeast Japan is consistent with the occurrence of a thin anisotropic layer within the mantle wedge. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.