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Effects of weathering on the RbSr and KAr ages of biotite from the Morton Gneiss, Minnesota

Earth and Planetary Science Letters

By:
and

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Abstract

Weathering has drastically reduced the RbSr and, to a lesser extent, the KAr age of biotite from the Morton Gneiss of southwestern Minnesota. The ages are approximately 75% and 25% lower than the corresponding ages for biotite from the fresh gneiss. The effects of even incipient weathering cannot be neglected in RbSr dating of biotite and, by analogy, of feldspar and whole-rock samples. ?? 1966.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Effects of weathering on the RbSr and KAr ages of biotite from the Morton Gneiss, Minnesota
Series title:
Earth and Planetary Science Letters
Volume
1
Issue:
6
Year Published:
1966
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Earth and Planetary Science Letters
First page:
372
Last page:
375
Number of Pages:
4