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The Relationship of Meteoritic Parent Body Thermal Histories and Electromagnetic Heating by a Pre-Main Sequence T Tauri Sun

Published online by Cambridge University Press:  12 April 2016

C.P. Sonett
C.P. Sonett*
Affiliation:
NASA Ames Research Center

Extract

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Convincing evidence exists that meteoritic matter was reheated shortly after the initial condensation of the solar nebula for those meteorites thought to be derived from parent bodies. This evidence takes the form of cooling rates carefully determined from diffusion studies of the migration rate of Ni across kamacite-taenite boundaries in iron meteorites (Fish, Goles, and Anders, 1960; Goldstein and Ogilvie, 1965; Goldstein and Short, 1967; Wood, 1964). The notion that the irons condensed directly from the solar nebula requires that these measurements and the existence of large Widmanstätten figures be explained as a condensation event. This seems rather unlikely and, in any event, requires a far more complex explanation than heating and melting in a parent body.

Type
Part II-Origin of Asteroids Interrelations with Comets, Meteorites, and Meteors
Information
International Astronomical Union Colloquium , Volume 12: Physical Studies of Minor Planets , 1971 , pp. 239 - 245
Copyright
Copyright © NASA 1971

References

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Discussion Reference

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