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Research Article| March 01, 2010 Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan Kenichiro Tani; Kenichiro Tani * 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan *E-mail: kentani@jamstec.go.jp. Search for other works by this author on: GSW Google Scholar Daniel J. Dunkley; Daniel J. Dunkley 2National Institute of Polar Research, Tokyo 190-8518, Japan Search for other works by this author on: GSW Google Scholar Jun-Ichi Kimura; Jun-Ichi Kimura 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan Search for other works by this author on: GSW Google Scholar Richard J. Wysoczanski; Richard J. Wysoczanski 3National Institute of Water and Atmospheric Research, Wellington 6041, New Zealand Search for other works by this author on: GSW Google Scholar Kunimi Yamada; Kunimi Yamada 4Geological Isolation Research and Development Directorate, Japan Atomic Energy Agency, Gifu 509-5102, Japan Search for other works by this author on: GSW Google Scholar Yoshiyuki Tatsumi Yoshiyuki Tatsumi 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan Search for other works by this author on: GSW Google Scholar Author and Article Information Kenichiro Tani * 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan Daniel J. Dunkley 2National Institute of Polar Research, Tokyo 190-8518, Japan Jun-Ichi Kimura 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan Richard J. Wysoczanski 3National Institute of Water and Atmospheric Research, Wellington 6041, New Zealand Kunimi Yamada 4Geological Isolation Research and Development Directorate, Japan Atomic Energy Agency, Gifu 509-5102, Japan Yoshiyuki Tatsumi 1Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan *E-mail: kentani@jamstec.go.jp. Publisher: Geological Society of America Received: 13 Jul 2009 Revision Received: 28 Sep 2009 Accepted: 29 Sep 2009 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2010 Geological Society of America Geology (2010) 38 (3): 215–218. https://doi.org/10.1130/G30526.1 Article history Received: 13 Jul 2009 Revision Received: 28 Sep 2009 Accepted: 29 Sep 2009 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Kenichiro Tani, Daniel J. Dunkley, Jun-Ichi Kimura, Richard J. Wysoczanski, Kunimi Yamada, Yoshiyuki Tatsumi; Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan. Geology 2010;; 38 (3): 215–218. doi: https://doi.org/10.1130/G30526.1 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 Tanzawa plutonic complex (TPC), central Japan, is a suite of tonalitic-gabbroic plutons exposed in a globally unique arc-arc collision zone, where an active intraoceanic Izu-Bonin-Mariana (IBM) arc is colliding against the Honshu arc. The TPC has been widely accepted as an exposed middle crust section of the IBM arc, chiefly because of geochemical similarities between the TPC and IBM rocks and previously reported precollisional Miocene K-Ar ages. However, new zircon U-Pb ages show that the main pulse of TPC magmatism was syncollisional and that plutons were emplaced rapidly and cooled soon after Pliocene collision. Trace element compositions of TPC zircon show distinctively elevated Th/Nb ratios compared to zircon from other noncollisional IBM silicic plutonic rocks, indicating the involvement of continental sediments from the Honshu arc in their magma genesis. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.