Late Paleozoic and Early Mesozoic rare-metal magmatism of Central Asia: Stages, provinces, and formation settings

被引:45
作者
Yarmolyuk, V. V. [1 ]
Kuzmin, M. I. [2 ]
机构
[1] Russian Acad Sci, Inst Geol Ore Deposits Petrog Mineral & Geochem, Moscow 119017, Russia
[2] Ap Vinogradov Geochem Inst, Siberian Branch, Irkutsk 664033, Russia
基金
俄罗斯基础研究基金会;
关键词
PERALKALINE GRANITOID MAGMATISM; MANTLE PLUMES; IGNEOUS ROCKS; NW CHINA; AGE; TRANSBAIKALIA; EVOLUTION; REGION; GEOCHRONOLOGY; XINJIANG;
D O I
10.1134/S1075701512050054
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Late Paleozoic and Early Mesozoic epochs in the formation history of the Central Asian Foldbelt are distinguished by high rare-metal productivity. A number of large REE, Ta, Nb, Zr, Be, Sn, Li, Mo, Re, and other deposits were formed at that time. As a rule, they are of the magmatic origin and related to the intrusions of highly evolved igneous rocks varying in composition from alkaline ultramafic with carbonatites to alkali and Li-F granites. In general, the occurrences of rare-metal magmatism are related to the rift zones of the Central Asian Rift System formed 310-190 Ma ago and conjugated with a consecutive series of the Barguzin, Hangay, and Hentiy zonal igneous provinces characterized by the large batholiths in their centers and rift zones in the framework. Such a structure indicates that these provinces were formed above isometric mantle sources or plumes with participation of large-scale crustal anatexis. The evident links of rare-metal deposits to occurrences of mantle magmatism within the zonal igneous provinces show that plume sources played an important role in their formation.
引用
收藏
页码:313 / 333
页数:21
相关论文
共 97 条
[1]  
Al'mukhamedov AI, 1999, GEOL GEOFIZ, V40, P1575
[2]   Evolution of the trachydacite and pantellerite magmas of the bimodal volcanic association of Dzarta-Khuduk, Central Mongolia: Investigation of inclusions in minerals [J].
Andreeva, I. A. ;
Kovalenko, V. I. .
PETROLOGY, 2011, 19 (04) :348-369
[3]  
[Anonymous], 2007, SUPERPLUMES PLATE TE
[4]  
[Anonymous], 1974, Tectonics of the Mongolian People's Republic
[5]  
[Anonymous], GEOL GEOFIZ
[6]  
[Anonymous], 1975, Mesozoic and Cenozoic Tectonics and Magmatism of Mongolia
[7]  
[Антипин B.С. Antipin V.S.], 2006, [Геохимия, Geokhimiya], P1040
[8]  
[Берзина А.П. Berzina A.P.], 2007, [Геология и геофизика, Geologiya i geofizika], V48, P185
[9]  
Berzina A. P., 2009, Geol. Geofiz, V50, P1077
[10]   Revised definition of large igneous provinces (LIPs) [J].
Bryan, Scott E. ;
Ernst, Richard E. .
EARTH-SCIENCE REVIEWS, 2008, 86 (1-4) :175-202