Cosmic ray exposure dating with in situ produced cosmogenic He-3 - Results from young Hawaiian lava flows

Details Cosmic ray exposure dating with in situ produced cosmogenic He-3 - Results from young Hawaiian lava flows Cosmic ray exposure dating with in situ produced cosmogenic He-3 - Results from young Hawaiian lava flows

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..97..177k&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 97, no. 1-2, Feb. 1990, p. 177-189. Research supported by the Woods H

Physics

48

Cosmic Rays, Hawaii, Helium Isotopes, Lava, Radioactive Age Determination, Atmospheric Models, Dipole Moments, Earth Surface, Olivine, Sea Level

Scientific paper

Cosmogenic 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.

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