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Core Formation in the Earth: Constraints from Ni and CoDue to their metal-loving nature, Ni and Co were strongly partitioned into the metallic core and were left depleted in the silicate mantle during core formation in the Earth. Based on experimental liquid metal- liquid silicate partition coefficients (D), studies have suggested that core formation in an early magma Ocean can explain the observed mantle depletions of Ni and Co [l-51. However, the conditions proposed by the magma ocean models have ranged from pressures of 24 to 59 GPa and temperatures of 2200 to < 4000 K. Furthermore, the proposed magma Ocean oxygen fugacities have differed by nearly two orders of magnitude.Chabot and Agee noted that the different models predicted contradictory behaviors for D(Ni) and D(Co) as a function of temperature. With the hope of resolving the discrepancies between the magma ocean models, we conducted a systematic experimental study to constrain the effects of temperature on D(Ni) and D(Co).
Document ID
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Chabot, N. L.
(Case Western Reserve Univ. Cleveland, OH, United States)
Draper, D. S.
(New Mexico Univ. Albuquerque, NM, United States)
Agee, C. B.
(New Mexico Univ. Albuquerque, NM, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Workshop on Oxygen in the Terrestrial Planets
Subject Category
Funding Number(s)
OTHER: 344-31-20-25
Distribution Limits
Public Use Permitted.
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