UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data shown on the profile page to:

http://www.ucl.ac.uk/finance/secure/research/post_award
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Relative strength of the pyrope-majorite solid solution and the flow-law of majorite containing garnets
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Hunt SA, Dobson DP, Li L, Weidner DJ, Brodholt JP
  • Publisher:
    ELSEVIER SCIENCE BV
  • Publication date:
    03/2010
  • Pagination:
    87, 95
  • Journal:
    PHYS EARTH PLANET IN
  • Volume:
    179
  • Issue:
    1-2
  • Print ISSN:
    0031-9201
  • Language:
    EN
  • Keywords:
    Garnets, Transition-zone, Majorite rheology, Flow-law, High-pressure, High-temperature, ELASTIC-WAVE VELOCITIES, EQUATION-OF-STATE, TRANSITION ZONE, HIGH-PRESSURE, PLASTIC-DEFORMATION, SILICATE GARNETS, SYNTHETIC PYROPE, HYDROSTATIC COMPRESSION, SOLUTION SERIES, 8 GPA
  • Addresses:
    Hunt, SA
    UCL
    Dept Earth Sci
    London
    WC1E 6BT
    England

    UCL
    Dept Chem
    London
    WC1H 0AJ
    England
Abstract
Even though the garnet phase is the second most abundant phase in the upper-mantle and transition-zone, no previous studies have directly measured the effect of majorite content on the strength of garnet under mantle conditions. Here we report the results of constant strain-rate and stress-relaxation experiments on garnets in the pyrope-majorite solid solution which constrain the strength of majoritic containing garnets relative to pyrope as a function of majorite content and temperature. We find that at temperatures below 650 degrees C both pure pyrope and majoritic garnets have the same strength. Conversely, above 650 degrees C we find that majoritic garnets are initially stronger than pure pyrope but weaken with increasing temperature and majorite content and with significant majorite contents are weaker than pyrope above approximately 800 degrees C. We develop a flow law for the entire pyrope majorite solid solution as a function of temperature and majorite content. (C) 2010 Elsevier B.V. All rights reserved.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Authors
Dept of Earth Sciences
Dept of Earth Sciences
Dept of Earth Sciences
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by