Late-Paleoproterozoic granite events and their geological significance in Helanshan area, Inner Mongolia Evidence from geochronology.

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	Late-Paleoproterozoic granite events and their geological significance in Helanshan area, Inner Mongolia Evidence from geochronology.
	Geng, YS (Geng YuanSheng); Zhou, XW (Zhou XiWen); Wang, XS (Wang XinShe); Ren, LD (Ren LiuDong)
刊名	ACTA PETROLOGICA SINICA
	2009
卷号	25 期号:8 页码:1830-1842
关键词	Late-Paleoproterozoic Helanshan complex Granitoids Zircon SHRIMP U-Pb dating Northern margin of North China Craton
ISSN号	1000-0569
英文摘要	Helanshan complex, situated in the western margin of the North China Craton, consists mainly of khondlite series and deformed granitoids (orthogneisses). The former is composed dominently of sillimanite-garnet gneiss, garnet two-feldspar gneiss, leptineite and a bit of marble and granulite, the later consists mainly of biotite plagioclase gneiss, garnet granite, porphyritic granite and gneissic diorite. By using the zircon SHRIMP U-Pb dating, the authors have been obtained some results for granitoids in this area. The biotite feldspar gneiss and garnet granite formed respectively 2053 +/- 58Ma and 2047 +/- 42Ma, respectively, porphyritic granite and gneissic diorite intruded at 1955Ma and 1920Ma respectively. A lot of geochronology data indicate that a Late-Paleoproterozoic granite zone distributes in the northern margin of the North China Craton. The Late-Paleoproterozoic granitoids formed in three stages, the granitoids of the first stage formed early than 2.0Ga, second stage occurred in 2.0 similar to 1.87Ga, the granitoids in third stage intruded at 1.85 similar to 1.80Ga. The Late-Paleoproterozoic granitoids in the Helanshan area formed mainly at first and second stage. In the north margin of the North China Craton, Late-Paleoproterozioc granite magmatism accompanied usually by regional metamorphism in time.
学科主题	火成岩岩石学
WOS关键词	NORTH CHINA CRATON ; PB ZIRCON GEOCHRONOLOGY ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; PRESSURE METAMORPHISM ; EVOLUTION ; CONSTRAINTS ; COMPLEX ; AGES ; DISCOVERY ; TERRAIN
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000269813000008
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39012]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Geng, YS ,Zhou, XW ,Wang, XS ,et al. Late-Paleoproterozoic granite events and their geological significance in Helanshan area, Inner Mongolia Evidence from geochronology.[J]. ACTA PETROLOGICA SINICA,2009,25(8):1830-1842.
APA	Geng, YS ,Zhou, XW ,Wang, XS ,&Ren, LD .(2009).Late-Paleoproterozoic granite events and their geological significance in Helanshan area, Inner Mongolia Evidence from geochronology..ACTA PETROLOGICA SINICA,25(8),1830-1842.
MLA	Geng, YS ,et al."Late-Paleoproterozoic granite events and their geological significance in Helanshan area, Inner Mongolia Evidence from geochronology.".ACTA PETROLOGICA SINICA 25.8(2009):1830-1842.