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Cosmogenic helium in a terrestrial igneous rockNew helium isotopic measurements on samples from the Kula formation of Haleakala volcano of Hawaii are presented that are best explained by an in situ cosmogenic origin for a significant fraction of the He-3. Results from crushing and stepwise heating experiments, and consideration of the exposure age of the sample at the surface and the cosmic ray fluxes strongly support this hypothesis. Although crustal cosmogenic helium has been proposed previously, this represents its first unambiguous identification in a terrestrial sample.
Document ID
19860050801
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kurz, M. D.
(Woods Hole Oceanographic Institution MA, United States)
Date Acquired
August 12, 2013
Publication Date
April 3, 1986
Publication Information
Publication: Nature
Volume: 320
ISSN: 0028-0836
Subject Category
Geophysics
Accession Number
86A35539
Funding Number(s)
CONTRACT_GRANT: NSF OCE-83-15270
CONTRACT_GRANT: NAG9-69
Distribution Limits
Public
Copyright
Other

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