Measurements of Cl-36 in Antarctic meteorites and Antarctic ice using a Van de Graaff accelerator

The paper presents measurements of cosmic-ray produced (Cl-36) in Antarctic meteorites and ice using a Van de Graaff accelerator as an ultrasensitive mass spectrometer. Results from this ion counting technique are used to support a two-stage irradiation model for the Yamato-7301 and Allan Hills-7600...

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Bibliographic Details
Main Authors: Nishiizumi, K., Arnold, J. R., Finkel, R. C., Elmore, D., Ferraro, R. D., Gove, H. E., Beukens, R. P., Chang, K. H., Kilius, L. R.
Format: Other/Unknown Material
Language:unknown
Published: 1979
Subjects:
91
Allan Hills
Antarctic
The Antarctic
Yamato
Antarc*
Ice cap
Online Access:http://ntrs.nasa.gov/search.jsp?R=19800036000
Description
Summary:The paper presents measurements of cosmic-ray produced (Cl-36) in Antarctic meteorites and ice using a Van de Graaff accelerator as an ultrasensitive mass spectrometer. Results from this ion counting technique are used to support a two-stage irradiation model for the Yamato-7301 and Allan Hills-76008 meteorites and to show a long terrestrial age for Allan Hills-77002. Yamato-7304 has a terrestrial age of less than 0.1 m.y., and the (Cl-36) content of the Antarctic ice sample from the Yamato mountain is consistent with levels expected in currently depositing snow implying that the age of the ice cap at this site is less than on (Cl-36) half-life.

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