NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Water and the thermal evolution of carbonaceous chondrite parent bodiesTwo hypotheses are proposed for the aqueous alteration of carbonaceous chondrites within their parent bodies, in which respectively the alteration occurs (1) throughout the parent body interior, or (2) in a postaccretional surface regolith; both models assume an initially homogeneous mixture of ice and rock that is heated through the decay of Al-26. Water is seen to exert a powerful influence on chondrite evolution through its role of thermal buffer, permitting substitution of a low temperature aqueous alteration for high temperature recrystallization. It is quantitatively demonstrated that liquid water may be introduced by either hydrothermal circulation, vapor diffusion from below, or venting due to fracture.
Document ID
19900033135
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Grimm, Robert E.
(MIT Cambridge, MA, United States)
Mcsween, Harry Y., Jr.
(Tennessee, University Knoxville, United States)
Date Acquired
August 14, 2013
Publication Date
December 1, 1989
Publication Information
Publication: Icarus
Volume: 82
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
90A20190
Funding Number(s)
CONTRACT_GRANT: NAG9-58
CONTRACT_GRANT: NSG-7297
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available