EXHUMATION OF HIGH-PRESSURE ROCKS OF THE KOKCHETAV MASSIF: FACTS AND MODELS

dc.contributor.author	Dobretsov N.L.
dc.contributor.author	Shatsky V.S.
dc.date.accessioned	2022-09-26T05:02:20Z
dc.date.available	2022-09-26T05:02:20Z
dc.date.issued	2004
dc.identifier	https://elibrary.ru/item.asp?id=13449712
dc.identifier.citation	Lithos, 2004, 78, 3, 307-318
dc.identifier.issn	0024-4937
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/38756
dc.description.abstract	The exhumation of ultrahigh-pressure (UHP) metamorphic units from depths more than 100–120 km is one of the most intriguing questions in modern petrology and geodynamics. We use the diamondiferous Kumdy-Kol domain in the Kokchetav Massif to show that exhumation models should take into consideration initially high uplift velocities (from 20 down to 6 cm/year) and the absence of the deformation of UHP assemblages. The high rate of exhumation are indicated by ion microprobe (SHRIMP) dating of zircons from diamondiferous rocks and supported by the low degree of nitrogen aggregation in metamorphic diamonds.
dc.subject	UHP metamorphism
dc.subject	Melting
dc.subject	Exhumation
dc.subject	Model
dc.subject	Kokchetav Massif
dc.title	EXHUMATION OF HIGH-PRESSURE ROCKS OF THE KOKCHETAV MASSIF: FACTS AND MODELS
dc.type	Статья

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