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A Proterozoic 40Ar/39Ar Age for the Söderfjärden Impact Structure, Finland

Proceedings article published in 2014 by M. Schmieder ORCID, F. Jourdan, T. Öhman, E. Tohver, C. Mayers, A. Frew
This paper is available in a repository.
This paper is available in a repository.

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Abstract

New 40Ar/39Ar dating results for a black melt vein from the Söderfjärden impact structure, Finland, suggest a Neoproterozoic minimum age of ~640 Ma.