THE ORDOVICIAN BILLINGEN/VOLKHOV BOUNDARY INTERVAL (ARENIG) AT LAVA RIVER, NORTHWESTERN RUSSIA

dc.contributor.author	Tolmacheva T.
dc.contributor.author	Fedorov P.
dc.date.accessioned	2021-02-20T08:09:42Z
dc.date.available	2021-02-20T08:09:42Z
dc.date.issued	2001
dc.identifier	https://elibrary.ru/item.asp?id=13375156
dc.identifier.citation	Norsk Geologisk Tiddsskrift, 2001, 81, 2, 161-168
dc.identifier.issn	0029-196X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/25250
dc.description.abstract	A detailed study of the conodont distribution within the condensed carbonate beds around the boundary of Billingen and Volkhov Stages (Lower Ordovician, Arenig) in northwestern Russia confirms the presence of a continuous succession of conodont biozones recognized in contemporaneous sequences in Scandinavia. The Baltoniodus triangularis and Microzarkodina sp. A zones are reported for the first time from East Baltica, where carbonates of this interval underwent extensive bioturbation and are characterized by a number of closely spaced and distinctive glauconitic hardground surfaces. It has been revealed that the distribution of conodont elements around the hardground surfaces is strongly affected by bioturbation.
dc.subject	Ordovician
dc.subject	conodont
dc.subject	Northwestern Russia
dc.title	THE ORDOVICIAN BILLINGEN/VOLKHOV BOUNDARY INTERVAL (ARENIG) AT LAVA RIVER, NORTHWESTERN RUSSIA
dc.type	Статья
dc.subject.age	Paleozoic::Ordovician	en
dc.subject.age	Палеозой::Ордовикская	ru

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