Subduction-stage pressure-temperature path of eclogite from the Sambagawa belt: Prophetic record for oceanic-ridge subduction

Research Article| December 01, 2003 Subduction-stage pressure-temperature path of eclogite from the Sambagawa belt: Prophetic record for oceanic-ridge subduction Mutsuki Aoya; Mutsuki Aoya 1Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Search for other works by this author on: GSW Google Scholar Shin-ichi Uehara; Shin-ichi Uehara 2Department of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland Search for other works by this author on: GSW Google Scholar Masatoshi Matsumoto; Masatoshi Matsumoto 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Search for other works by this author on: GSW Google Scholar Simon R. Wallis; Simon R. Wallis 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Search for other works by this author on: GSW Google Scholar Masaki Enami Masaki Enami 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Search for other works by this author on: GSW Google Scholar Author and Article Information Mutsuki Aoya 1Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Shin-ichi Uehara 2Department of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland Masatoshi Matsumoto 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Simon R. Wallis 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Masaki Enami 3 Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Publisher: Geological Society of America Received: 11 Jun 2003 Revision Received: 24 Aug 2003 Accepted: 26 Aug 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (12): 1045–1048. https://doi.org/10.1130/G19927.1 Article history Received: 11 Jun 2003 Revision Received: 24 Aug 2003 Accepted: 26 Aug 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Mutsuki Aoya, Shin-ichi Uehara, Masatoshi Matsumoto, Simon R. Wallis, Masaki Enami; Subduction-stage pressure-temperature path of eclogite from the Sambagawa belt: Prophetic record for oceanic-ridge subduction. Geology 2003;; 31 (12): 1045–1048. doi: https://doi.org/10.1130/G19927.1 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 Petrologic studies of the Kotsu eclogite from the Sambagawa high-pressure (P), low-temperature (T) metamorphic belt show that the eclogite has recorded a very steep subduction-stage P-T path reaching 20 kbar and 600 °C; the dP/dT is >7.1 kbar/100 °C. Compilation of previously derived subduction-stage P-T paths from the Sambagawa belt and the result of this study show that these P-T paths are not on a straight line from the origin, but define a curve with dP/dT increasing with pressure. A new model incorporating the progressive approach of an oceanic ridge to a subduction zone shows that the Sambagawa P-T paths are best explained by a setting in which a ridge is close to being subducted at a slow rate relative to the plate-subduction rate. Exhumation of high-P, low-T metamorphic rocks in oceanic subduction zones may be associated with the slow approach and subsequent subduction of oceanic ridges. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.