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Rapid growth of magnesium-carbonate weathering products in a stony meteorite from AntarcticaNesquehonite, a hydrous magnesium carbonate, occurs as a weathering product on the surface of the Antarctic meteorite LEW 85320 (H5 chondrite). Isotopic measurements of delta(C-13) and delta(O-18) indicate that the nesquehonite formed at near freezing temperatures by reaction of meteoritic minerals with terrestrial water and carbon dioxide. Results from carbon-14 dating suggest that, although the meteorite has been in Antarctica for at least 32,000 to 33,000 years, the nesquehonite formed after AD 1950.
Document ID
19890029125
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jull, A. J. T.
(NSF; Arizona, University Tucson, United States)
Cheng, S.
(Arizona, University Tucson, United States)
Gooding, J. L.
(NASA Johnson Space Center Houston, TX, United States)
Velbel, M. A.
(Michigan State University East Lansing, United States)
Date Acquired
August 14, 2013
Publication Date
October 21, 1988
Publication Information
Publication: Science
Volume: 242
ISSN: 0036-8075
Subject Category
Lunar And Planetary Exploration
Accession Number
89A16496
Funding Number(s)
CONTRACT_GRANT: NAG9-233
CONTRACT_GRANT: NSF EAR-85-12761
Distribution Limits
Public
Copyright
Other

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