Eclogite rheology: Implications for subducted lithosphere

Abstract

Research Article| August 01, 2001 Eclogite rheology: Implications for subducted lithosphere Z.-M. Jin; Z.-M. Jin 1Institute of Geophysics and Planetary Physics and Department of Earth Sciences, University of California, Riverside, California 92521, USA, and Faculty of Earth Sciences, China University of Geosciences, Wuhan, 430074, China Search for other works by this author on: GSW Google Scholar J. Zhang; J. Zhang 1Institute of Geophysics and Planetary Physics and Department of Earth Sciences, University of California, Riverside, California 92521, USA, and Faculty of Earth Sciences, China University of Geosciences, Wuhan, 430074, China Search for other works by this author on: GSW Google Scholar H.W. Green, II; H.W. Green, II 1Institute of Geophysics and Planetary Physics and Department of Earth Sciences, University of California, Riverside, California 92521, USA, and Faculty of Earth Sciences, China University of Geosciences, Wuhan, 430074, China Search for other works by this author on: GSW Google Scholar S. Jin S. Jin 2Faculty of Earth Sciences, China University of Geosciences, Wuhan, 430074, China Search for other works by this author on: GSW Google Scholar Geology (2001) 29 (8): 667–670. https://doi.org/10.1130/0091-7613(2001)029<0667:ERIFSL>2.0.CO;2 Article history received: 06 Nov 2000 rev-recd: 19 Mar 2001 accepted: 30 Mar 2001 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Z.-M. Jin, J. Zhang, H.W. Green, S. Jin; Eclogite rheology: Implications for subducted lithosphere. Geology 2001;; 29 (8): 667–670. doi: https://doi.org/10.1130/0091-7613(2001)029<0667:ERIFSL>2.0.CO;2 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 Eclogite, the high-pressure equivalent of basalt, is common in ultrahigh-pressure metamorphic terranes and constitutes the oceanic crust after it is subducted into the mantle. We present here first measurements of the rheology of eclogite and its constituent minerals, garnet and omphacite. Eclogite with approximately equal amounts of these two minerals has the same strength as harzburgite, whereas pure omphacite is much weaker and pure garnetite is much stronger. The strength variation of different mixtures of the two phases is quantitatively consistent with theoretical predictions for a two-phase material. The strengthening effect of garnet should increase the viscosity of the lower part of the mantle transition zone, but it probably is not sufficient to allow delamination of the oceanic crust from the underlying mantle during subduction. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.