Late-Paleoproterozoic tectonothermal events of the metamorphic basement in Alxa area Evidence from geochronology.

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	Late-Paleoproterozoic tectonothermal events of the metamorphic basement in Alxa area Evidence from geochronology.
	Geng, YS (Geng YuanSheng); Wang, XS (Wang XinShe); Wu, CM (Wu ChunMing); Zhou, XW (Zhou XiWen)
刊名	ACTA PETROLOGICA SINICA
	2010
卷号	26 期号:4 页码:1159-1170
关键词	Paleoproterozoic Metamorphic basement Tectonothermal events Geochronology Alxa area
ISSN号	1000-0569
英文摘要	The metamorphic basement ( block) in Alxa area, inner Mongolia, can be divided into Archean Debusige complex, Paleoproterozoic Bayan-Wulashan complex, Paleo-Middle Proterozoic Alxa complex, Boluositanmiao orthogneiss and Bijigetai orthogneiss. 1926Ma and 1802Ma metamorphic events was recorded in zircons from the gneisses of Debusige complex, 1918Ma metamorphic event and 1722Ma cooling age was respectively recorded in hornblende and plagioclase from Debusige complx. 1839Ma magmatic event was distinguished in zircons from Boluositanmiao deformed orthogneiss. The Late-Paleoproterozoic tectonothemal events can be divided into early event (2000 similar to 1900Ma) and late event (1850 similar to 1800Ma). The Late Paleoproterozoic tectonothertnal events in the eastern part of Alxa area are similar to magmatic and metamorphic events in the Daqingshan-Jining-Datong area in time and feature. Therefore, Paleoproterozoic orogenie belt (khondalite belt) in the West Block, the North China Craton, extended westly to the northeastern part of Alxa area.
学科主题	变质岩岩石学
WOS关键词	NORTH CHINA CRATON ; HIGH-PRESSURE GRANULITES ; PB ZIRCON GEOCHRONOLOGY ; SANGGAN AREA ; TECTONIC EVOLUTION ; ROCKS ; SUPERCONTINENT ; GEOCHEMISTRY ; CONSTRAINTS ; COMPLEX
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000277950600013
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39161]
专题	中国地质调查局
作者单位	Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Geng, YS ,Wang, XS ,Wu, CM ,et al. Late-Paleoproterozoic tectonothermal events of the metamorphic basement in Alxa area Evidence from geochronology.[J]. ACTA PETROLOGICA SINICA,2010,26(4):1159-1170.
APA	Geng, YS ,Wang, XS ,Wu, CM ,&Zhou, XW .(2010).Late-Paleoproterozoic tectonothermal events of the metamorphic basement in Alxa area Evidence from geochronology..ACTA PETROLOGICA SINICA,26(4),1159-1170.
MLA	Geng, YS ,et al."Late-Paleoproterozoic tectonothermal events of the metamorphic basement in Alxa area Evidence from geochronology.".ACTA PETROLOGICA SINICA 26.4(2010):1159-1170.