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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.

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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
Sun, D0000-0003-4461-4664
Additional Information:© 2004 Pergamon-Elsevier Science Ltd.
Issue or Number:11
Record Number:CaltechAUTHORS:20120830-153419650
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33728
Deposited By: Tony Diaz
Deposited On:30 Aug 2012 22:40
Last Modified:03 Oct 2019 04:12

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