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Grahn & Nõlvak, 1993

Grahn, Y. & Nõlvak, J. 1993. Chitinozoan dating of Ordovician impact events in Sweden and Estonia. A preliminary note. GFF 115 (3), 263-264. | DOI | DETAILS

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ID1669
ReferenceGrahn & Nõlvak, 1993
AuthorGrahn, Y. & Nõlvak, J.
Year1993
TitleChitinozoan dating of Ordovician impact events in Sweden and Estonia. A preliminary note
JournalGFF
Volume115
Number3
pgs.263-264
Source typearticle in journal
LanguageEnglish
DOI10.1080/11035899309452758
AbstractFour impact craters of Ordovician age are known from Sweden and Estonia. Chitinozoans from impact and post-impact sediments in these craters have been investigated. Three craters (Kärdla, Tvären and Lockne) were created at different occasions in the earliest Caradoc, and one crater (Granby) probably in late Arenig.