Physics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991e%26psl.104..440n&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 104, no. 2-4, June 1991, p. 440-454.
Physics
65
Antarctic Regions, Cosmic Rays, Geochronology, Isotope Separation, Radiochemistry, Trace Elements, Aluminum Isotopes, Beryllium Isotopes, Erosion, Ice Environments, Quartz, Rocks
Scientific paper
Cosmic-ray produced Be-10 and Al-26 were measured in purified quartz fractions of selected rock samples from Antarctic mountains. From these data, mean erosion rates were calculated for the limiting case of steady-state surface exposure to cosmic rays, and minimum exposure ages, for the limiting case of no erosion. Calculated mean erosion rates are very low, on the order of a few times 0.00001 cm/yr; the sampling is believed to be sufficient to generalize this result to exposed bedrock in Antarctica. In favorable cases it is possible to distinguish between the limiting cases; steady-state erosion seems a better description in such cases. Most samaples, including some taken a few meters above the present ice level, seem to have been exposed for millions of years, without major episodes of burial or abrasion by ice.
Arnold James R.
Fink David
Klein Jeff
Kohl C. P.
Nishiizumi Kuni
No associations
LandOfFree
Cosmic ray produced Be-10 and Al-26 in Antarctic rocks - Exposure and erosion history does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmic ray produced Be-10 and Al-26 in Antarctic rocks - Exposure and erosion history, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic ray produced Be-10 and Al-26 in Antarctic rocks - Exposure and erosion history will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1282933