NEW K-AR AGES FOR BASALTS FROM FRANZ JOSEF LAND

Grachev A.F.; Arakelyantz M.M.; Lebedev V.A.; Musatov E.E.; Stolbov N.M.

dc.contributor.author	Grachev A.F.
dc.contributor.author	Arakelyantz M.M.
dc.contributor.author	Lebedev V.A.
dc.contributor.author	Musatov E.E.
dc.contributor.author	Stolbov N.M.
dc.date.accessioned	2021-04-06T02:07:44Z
dc.date.available	2021-04-06T02:07:44Z
dc.date.issued	2001
dc.identifier	https://www.elibrary.ru/item.asp?id=21531035
dc.identifier.citation	Russian Journal of Earth Sciences, 2001, 3, 1, 79-82
dc.identifier.issn	1681-1208
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/27508
dc.description.abstract	New K-Ar age determinations on basalt samples from three drillholes and outcrops on Franz Josef Land suggest that flood volcanism throughout the archipelago fits in a very narrow age interval (116 +- 5 Ma). For 95% of the samples we studied, age scatter is within analytical uncertainty. New data on basaltic bulk-rock, trace element, and REE compositions point to mantle plume affinity for the Early Cretaceous magmatism on Franz Josef Land, which preceded the onset of seafloor spreading in the Canada Basin.
dc.subject	FRANZ JOSEF LAND
dc.subject	FLOOD VOLCANISM
dc.subject	K-AR DATING
dc.title	NEW K-AR AGES FOR BASALTS FROM FRANZ JOSEF LAND
dc.type	Статья