Publikationsdatum:
2019-07-12
Beschreibung:
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.
Schlagwort(e):
GEOPHYSICS
Materialart:
Earth and Planetary Science Letters (ISSN 0012-821X); 97; 2-Jan; 177-189
Format:
text
Permalink