UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at http://www.ucl.ac.uk/finance/research/post_award/post_award_contacts.php by entering your department
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
The effect of pressure on thermal diffusivity in pyroxenes
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Hunt SA, Walker AM, McCormack RJ, Dobson DP, Wills AS, Li L
  • Publisher:
    MINERALOGICAL SOC
  • Publication date:
    10/2011
  • Pagination:
    2597, 2610
  • Journal:
    MINERAL MAG
  • Volume:
    75
  • Issue:
    5
  • Print ISSN:
    0026-461X
  • Language:
    EN
  • Keywords:
    thermal diffusivity, X-radiographic imaging, pyroxenes, high pressure, multi-anvil, HIGH-TEMPERATURE, MANTLE MINERALS, CONDUCTIVITY, OLIVINE, ORTHOENSTATITE, JADEITE, DIFFRACTION, ENSTATITE, GARNET, GPA
  • Addresses:
    Hunt, SA
    SUNY Stony Brook
    Dept Earth & Space Sci
    Inst Mineral Phys
    Stony Brook
    NY
    11794
    USA
Abstract
The thermal diffusivity of diopside, jadeite and enstatite were measured at simultaneous pressures and temperatures of up to 7 GPa and 1200 K using the X-radiographic Angstrom method. The measurements herein show that the pressure dependency of thermal diffusivity in pyroxenes is significantly greater than in olivine or garnet and that in the MORB-layer of a subducting slab the thermal diffusivity of pyroxenes are a factor of 1.5 greater than that of olivine. The temperature dependence of all the data sets is well described by a low-order polynomial fit to 1/kappa and the pressure dependence is exponential in 1/kappa, formulations which are consistent with the damped harmonic oscillator model for thermal properties.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Author
Dept of Earth Sciences
Author
Dept of Earth Sciences
Author
Dept of Chemistry
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by