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Cosmic ray exposure dating with in situ produced cosmogenic He-3 - Results from young Hawaiian lava flowsCosmogenic helium contents in a suite of Hawaiian radiocarbon-dated lava flows were measured to study the use of the production rate of spallation-produced cosmogenic He-3 as a surface exposure chronometer. Basalt samples from the Mauna Loa and Hualalai volcanoes were analyzed, showing that exposure-age dating is feasible in the 600-13000 year age range. The data suggest a present-day sea-level production rate in olivine of 125 + or - 30 atoms/g yr.
Document ID
19900041720
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1016/0012-821X(90)90107-9
Authors
Kurz, Mark D. (Woods Hole Oceanographic Inst. MA, United States)
Colodner, Debra (Woods Hole Oceanographic Inst. MA, United States)
Trull, Thomas W. (Woods Hole Oceanographic Institution MA, United States)
Moore, Richard B. (USGS Denver, CO, United States)
O'Brien, Keran (Northern Arizona University Flagstaff, AZ, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1990
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 97
Issue: 2-Jan
ISSN: 0012-821X
Subject Category
Geophysics
Accession Number
90A28775
Funding Number(s)
CONTRACT_GRANT: NSF EAR-86-10611
CONTRACT_GRANT: NAG9-69
Distribution Limits
Public
Copyright
Other

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