NEW 40AR/39AR AGES OF CRETACEOUS CONTINENTAL VOLCANICS FROM CENTRAL CHUKOTKA: IMPLICATIONS FOR INITIATION AND DURATION OF VOLCANISM WITHIN THE NORTHERN PART OF THE OKHOTSK CHUKOTKA VOLCANIC BELT (NORTHEASTERN EURASIA)

dc.contributor.author	Ispolatov V.O.
dc.contributor.author	Heizler M.
dc.contributor.author	Tikhomirov P.L.
dc.contributor.author	Cherepanova I.Yu.
dc.date.accessioned	2022-09-28T05:54:12Z
dc.date.available	2022-09-28T05:54:12Z
dc.date.issued	2004
dc.identifier	https://elibrary.ru/item.asp?id=13459718
dc.identifier.citation	Journal of Geology, 2004, 112, 3, 369-377
dc.identifier.issn	0022-1376
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/38791
dc.description.abstract	We used the single-crystal sanidine laser fusion Ar-40/Ar-39 method to date five samples of volcanic rocks from the northern (Chukotka) part of the Cretaceous Okhotsk-Chukotka volcanic belt (northeastern Eurasia). Ages of four samples from lowermost stratigraphic units range from 87.94 to 87.08 Ma, and one sample from the top of the section shows the age of 87.55 Ma. New results combined with previously published Ar-40/Ar-39 data indicate that volcanism within the northern part of the belt started in Coniacian time, at ca. 88 Ma, and was very short-lived (ca. 1-6 m. yr.).
dc.subject	Cretaceous
dc.title	NEW 40AR/39AR AGES OF CRETACEOUS CONTINENTAL VOLCANICS FROM CENTRAL CHUKOTKA: IMPLICATIONS FOR INITIATION AND DURATION OF VOLCANISM WITHIN THE NORTHERN PART OF THE OKHOTSK CHUKOTKA VOLCANIC BELT (NORTHEASTERN EURASIA)
dc.type	Статья
dc.subject.age	Mesozoic::Cretaceous
dc.subject.age	Мезозой::Меловая	ru

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