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Petrology of the lowermost mantle

Asimow, Paul D. and Sun, D. and Akins, J. A. and Luo, S. N. and Ahrens, T. J. (2004) Petrology of the lowermost mantle. Geochimica et Cosmochimica Acta, 68 (11). A561. ISSN 0016-7037. http://resolver.caltech.edu/CaltechAUTHORS:20120830-153419650

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Abstract

Seismic observations of the thermal boundary layer above the core-mantle boundary (CMB), including Ultra-Low Velocity Zones and D" discontinuities with velocity jumps of either sign, suggest that the bottom of the mantle may be compositionally distinct and, in places, partially molten[1]. Our new shock-wave data constrain the melting curve and liquid equation of state (EOS) of the key lower mantle component MgSiO_3 perovskite and suggest neutral or negative buoyancy of this melt at CMB pressure.


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Asimow, Paul D.0000-0001-6025-8925
Additional Information:© 2004 Pergamon-Elsevier Science Ltd.
Record Number:CaltechAUTHORS:20120830-153419650
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120830-153419650
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33728
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Aug 2012 22:40
Last Modified:23 Jul 2013 17:55

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