Superplasticity in garnet from eclogite facies shear zones in the Haram Gabbro, Haramsøya, Norway

Research Article| April 01, 2004 Superplasticity in garnet from eclogite facies shear zones in the Haram Gabbro, Haramsøya, Norway Michael P. Terry; Michael P. Terry 1Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany Search for other works by this author on: GSW Google Scholar Florian Heidelbach Florian Heidelbach 1Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany Search for other works by this author on: GSW Google Scholar Geology (2004) 32 (4): 281–284. https://doi.org/10.1130/G20157.1 Article history received: 28 Aug 2003 rev-recd: 04 Dec 2003 accepted: 05 Dec 2003 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 Michael P. Terry, Florian Heidelbach; Superplasticity in garnet from eclogite facies shear zones in the Haram Gabbro, Haramsøya, Norway. Geology 2004;; 32 (4): 281–284. doi: https://doi.org/10.1130/G20157.1 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 Study of garnet adjacent to and within shear zones that underwent synkinematic eclogitization reveals microstructures and textures that, for the first time, indicate grain- boundary sliding as the main deformation mechanism in garnet. Monomineralic garnet layers exhibit characteristic features of superplastic behavior and show little strength contrast to the surrounding minerals. The low strength is caused by the synkinematic growth of garnet limiting the grain size to tens of micrometers. This behavior may significantly influence rheologic properties of high- and ultrahigh-pressure shear zones in subduction environments and may play a role during the formation of garnet in the transition zone of the mantle. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.