Инд. авторы:	Antonov A.Y., Travin A.V.
Заглавие:	On the problem of the scale and composition of Paleozoic and Mesozoic granitoid magmatism in the Khilok-Vitim fold belt of Central Transbaikalia
Библ. ссылка:	Antonov A.Y., Travin A.V. On the problem of the scale and composition of Paleozoic and Mesozoic granitoid magmatism in the Khilok-Vitim fold belt of Central Transbaikalia // Russian Journal of Pacific Geology. - 2016. - Vol.10. - Iss. 2. - P.105-122. - ISSN 1819-7140. - EISSN 1819-7159.
Внешние системы:	DOI: 10.1134/S1819714016020020; РИНЦ: 27155407; SCOPUS: 2-s2.0-84970023341; WoS: 000376273800002;
Реферат:	eng: The paper presents a study of the gneissic granitoids of the Malkhan Complex and the intruisve granitoids of the Daur and Bichur complexes developed within the Khilok-Vitim fold belt of Central Transbaikalia. In the state geological map, these complexes have been attributed to the Early and Late Paleozoic. New Ar-40/Ar-39 geochronological data indicate that these rocks are Mesozoic rather than Paleozoic in age, which suggests the much broader manifestation of the Mesozoic granitoid complexes in this area. The studied Mesozoic granitoid massifs exhibit temporal and compositional zoning reflected in a westward decrease in age (from Early to Late Mesozoic) and increase in total alkalinity and potassium content at the appropriate trace-element characteristics. The obtained results of study of the Khilok-Vitim Belt are interpreted in the framework of the model of the formation of domal-cupola structures by the multiple activity of deep thermochemical plumes.
Ключевые слова:	GEOCHEMISTRY; ROCKS; UPPER-MANTLE; TRACE-ELEMENT; Transbaikalia; dome structures; Ar-40/Ar-39; Mesozoic; Paleozoic; magma; granitoids; plumes; REGION;
Издано:	2016
Физ. характеристика:	с.105-122
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