EARLY ARCHEAN KOMATIITES OF THE OLEKMA GRANITE-GREENSTONE REGION AND THEIR SM-ND AGE

dc.contributor.author	Zhuravlev D.Z.
dc.contributor.author	Pukhtel I.S.
dc.contributor.author	Simon A.K.
dc.date.accessioned	2020-10-09T09:00:45Z
dc.date.available	2020-10-09T09:00:45Z
dc.date.issued	1989
dc.identifier	https://elibrary.ru/item.asp?id=31148959
dc.identifier.citation	Transactions (Doklady) of the USSR Academy of Sciences. Earth Science Sections, 1989, , 2, 220-223
dc.identifier.issn	0891-5571
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/17882
dc.description.abstract	The oldest supracrustal rocks of the Olekma granite-greenstone region constitute a large 0.8 × 9.5-km erosion remnant among infracrustal formations of the Olekma granite-gneiss complex. They are components of the so-called 'oldest mafic-ultramafic rock association' (OMA). Komatiite accounts for 10 to 20 percent by volume of the section of the OMA. It forms flows that range in thickness from 0.3 to over 7 m, some of which are structurally asymmetrical. We dated the rocks studied and determined their REE content by the isotopic dilution method. The Sm-Nd isochron date reflects the time when the volcanic protoliths of the OMA were erupted.
dc.subject	Archean	en
dc.title	EARLY ARCHEAN KOMATIITES OF THE OLEKMA GRANITE-GREENSTONE REGION AND THEIR SM-ND AGE
dc.type	Статья
dc.subject.udc	550.93:551.71
dc.subject.age	Precambrian::Archean	en
dc.subject.age	Докембрий::Архей	ru

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