(AR-40)-(AR-39) dating of the meteorite Vetluga

Details (AR-40)-(AR-39) dating of the meteorite Vetluga (AR-40)-(AR-39) dating of the meteorite Vetluga

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984geokh......291s&link_type=abstract

Geokhimiia (ISSN 0016-7525), March 1984, p. 291-301. In Russian.

Computer Science

Achondrites, Argon Isotopes, Meteoritic Composition, Radioactive Age Determination, Asteroids, Basalt, Petrography

Scientific paper

Two samples of achondrite-eucrite from Vetluga are investigated by the (Ar-40)-(Ar-39) method using stepwise heating from 500 C to 1500 C. The samples are irradiated in a reactor with fast neutrons. The ages, calculated on the basis of the Ar-40/Ar-39 ratio, are 3.64 + or - 0.10 billion years and 3.54 + or - 0.15 billion years. These values are thought to correspond to shock metamorphism events. In addition, isotopic data are used to obtain the radiation age of the eucrite samples. The age (15-19 million years) is within an order of magnitude of the values obtained for previously investigated eucrites.

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