Инд. авторы:	Zagorsky V., Vladimirov A.G., Makagon V.M., Kuznetsova L.G., Smirnov S.Z., Dyachkov B.A., Annikova I., Shokalsky S.P., Uvarov A.N.
Заглавие:	Large fields of spodumene pegmatites in the settings of rifting and postcollisional shear-pull-apart dislocations of continental lithosphere
Библ. ссылка:	Zagorsky V., Vladimirov A.G., Makagon V.M., Kuznetsova L.G., Smirnov S.Z., Dyachkov B.A., Annikova I., Shokalsky S.P., Uvarov A.N. Large fields of spodumene pegmatites in the settings of rifting and postcollisional shear-pull-apart dislocations of continental lithosphere // Russian Geology and Geophysics. - 2014. - Vol.55. - Iss. 2. - P.237-251. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2014.01.008; РИНЦ: 21863633; SCOPUS: 2-s2.0-84893132195; WoS: 000330613000008;
Реферат:	eng: The authors analyze the geodynamic settings of large fields of spodumene pegmatites hosting Li and complex (Li, Cs, Ta, Be, and Sn) deposits of rare metals within the Central Asian Fold Belt. Most of the studied fields show a considerable time gap (from few tens of Myr to hundreds of Myr) between the spodumene pegmatites and the associated granites, which are usually considered parental. This evidence necessitates recognition of an independent pegmatite stage in the magmatic history of some pegmatite-bearing structures in Central Asia. The Precambrian-Late Mesozoic interval is marked by a close relationship between the large fields of spodumene pegmatites and extension settings of continental lithosphere. They occur either as (1) zones of long-lived deep faults bordering on trough (rift) structures experiencing the tectonic-magmatic activity or as (2) postcollisional zones of shearing and pull-apart dislocations. Thus, large fields of spodumene pegmatites might serve as indicators of continental-lithosphere extension. Important factors favoring the formation of rare-metal pegmatites both in collision zones and continental-rift settings are the presence of thick mature crust dissected by long-lived, deeply penetrating (down to the upper mantle) fault zones. They ease the effect of deep sources of energy and substance on crustal chambers of granite and pegmatite formation. © 2014 Elsevier Inc.
Ключевые слова:	tectonic setting; rifting; pegmatite; lithium; geochronology; fold belt; dislocation; continental lithosphere; collision zone; Spodumene; Rifting; Pegmatites; Lithium; Granite-pegmatite systems; Geochronology; Collision; Central Asian Fold Belt; Central Asia;
Издано:	2014
Физ. характеристика:	с.237-251