Инд. авторы:	Selyatitskii A.Y., Kulikova K.V.
Заглавие:	The first evidence of UHP metamorphism in the Polar Urals (Russia)
Библ. ссылка:	Selyatitskii A.Y., Kulikova K.V. The first evidence of UHP metamorphism in the Polar Urals (Russia) // Doklady Earth Sciences. - 2017. - Vol.476. - Iss. 2. - P.1222-1225. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X17100270; SCOPUS: 2-s2.0-85032996573; WoS: 000414357900025;
Реферат:	eng: A new ultrahigh-pressure (UHP) metamorphic terrane, the Marun-Keu eclogite–peridotite–gneiss complex was established in the Polar Urals (Russia). Owing to the P–T parameters of formation of garnet peridotites obtained for the first time, it was established that they experienced UHP metamorphism with a peak in the diamond stability field (39 kbar, 830oC) due to subduction of rocks of the Marun-Keu complex to the mantle (a depth of more than 100 km). Relics of plagioclase peridotites preserved in central parts of large peridotite bodies and petrochemical data are evidence that Marun-Key garnet peridotites cannot be of mantle origin. A basic-ultrabasic intrusion, which formed in the upper crust, can be considered as their protolith. Later, rocks of the massif plunged to the mantle along the subduction zone and metamorphosed under high-P to ultrahigh-P conditions. © 2017, Pleiades Publishing, Ltd.
Ключевые слова:	UHP metamorphism; Ultrahigh-pressure metamorphic terranes; Upper crust; Tectonics; eclogite; gneiss; P-T conditions; peridotite; polar region; subduction zone; terrane; ultrahigh pressure metamorphism; Urals; Russian Federation; Subduction zones; Gneiss complexes; Garnet peridotite; Diamond stability; Garnets; T parameter;
Издано:	2017
Физ. характеристика:	с.1222-1225