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Early evolution of the earth - Accretion, atmosphere formation, and thermal historyThe thermal and atmospheric evolution of the earth growing planetesimal impacts are studied. The generation of an H2O protoatmosphere is examined, and the surface temperatures are estimated. The evolution of an impact-induced H2O atmosphere is analyzed. Consideration is given to the formation time of a 'magma ocean'and internal water budgets. The thermal history of an accreting earth is reviewed. The wet convection and greenhouse effects are discussed, and the role of Fe oxidation on the evolution of an impact-induced H2O atmopshere is described. The relationship between differentiation processes and core segregation, the H2O and FeO content of the mantle, and the origin of the hydrosphere is also examined.
Document ID
19870038401
Document Type
Reprint (Version printed in journal)
Authors
Abe, Yutaka (Tokyo Univ. Japan)
Matsui, Takafumi (Tokyo, University Japan)
Date Acquired
August 13, 2013
Publication Date
November 30, 1986
Publication Information
Publication: Journal of Geophysical Research
Volume: 91
ISSN: 0148-0227
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSG-7297
Distribution Limits
Public
Copyright
Other