Инд. авторы:	Nozhkin A.D., Likhanov I.I., Savko K.A., Reverdatto V.V., Krylov A.A.
Заглавие:	Sapphirine-Bearing Ultrahigh-Temperature Granulites of the Anabar Shield: Chemical Composition, U-Pb Zircon Ages, and P-T Conditions of Metamorphism
Библ. ссылка:	Nozhkin A.D., Likhanov I.I., Savko K.A., Reverdatto V.V., Krylov A.A. Sapphirine-Bearing Ultrahigh-Temperature Granulites of the Anabar Shield: Chemical Composition, U-Pb Zircon Ages, and P-T Conditions of Metamorphism // Doklady Earth Sciences. - 2018. - Vol.479. - Iss. 1. - P.347-351. - ISSN 1028-334X. - EISSN 1531-8354.
Идентиф-ры:	DOI: 10.1134/S1028334X18030078; SCOPUS: 2-s2.0-85048313158; WoS: 000430654500017;
Реферат:	eng: The results of thermobarometry yielded the P-T parameters of formation and evolution of sapphirine- bearing granulites in the Anabar shield with peak values of UHT metamorphism in the range of T = 920-1000A degrees C at P = 9-11 kbar. Isotope-geochronological data indicate a polymetamorphic evolution of these rocks. Detrital zircon cores in the center of crystals yielded ages of 3.36, 2.75, 2.6, and 2.5 Ga. Later, superimposed metamorphic transformations of the detrital zircon formed rims dated to 2.4, 2.3, 2.2, and 1.83 Ga. A potential provenance source of the detrital zircons could be hypersthene plagiogneisses and metabasics of the Daldyn Group with a premetamorphic age no less than 3.32 Ga and products of their metamorphism of about 2.7 Ga old.
Ключевые слова:	EVOLUTION; YENISEI RIDGE;
Издано:	2018
Физ. хар-ка:	с.347-351