Isotopic geochronology of the Xianghongdian alkaline complex, northern;margin of the Dabie Mountains, China

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质调查局南京地质调查中心

	Isotopic geochronology of the Xianghongdian alkaline complex, northern;margin of the Dabie Mountains, China
	Yang, ZL 3; Shen, WZ ; Shen, JL ; Tao, KY ; Xie, FG
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	1999
卷号	73 期号:4 页码:404-410
关键词	isotopic geochronology alkaline complex Xianghongdian Dabie Mountains China
ISSN号	1000-9515
英文摘要	To the north of the Qinling-Dabie orogen there exists a Mesozoic (K-1) granite-syenite belt called the Beihuaiyang granite-syenite belt, in which the Xianghongdian alkaline complex outcrops in the Devonian Foziling schist and also intruded into the slightly earlier volcanic rocks. This alkaline complex is composed of syenite, alkaline syenite and nepheline syemite, but the nepheline syenite occurs inside the alkaline syenite in the pod-like, irregular, lenticular or layered shape. Researches on the petrogenesis of the alkaline complex and the relationship between the alkaline syenite and the nepheline syenite must rely on precise isotopic ages. Previous researches have reported isotopic dating results merely by the Ar-40/Ar-39 method on hornblende and biotite separated from the alkaline syenite and nepheline syenite. In view of this, the authors have made fairly detailed isotopic geochronological studies of the alkaline syenite and nepheline syenite by using Rb-Sr isochron for the whole rock and minerals, U-Pb for single zircon separate and the Ar-40/Ar-39 method for hornblende and potash feldspar. The results of this research are completely different from those of previous researches and show that the nepheline syenite was formed far earlier than the alkaline syenite.
学科主题	地质年代学
WOS关键词	ULTRAHIGH-PRESSURE METAMORPHISM ; ROCKS ; SHAN ; EXHUMATION ; DIAMOND
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC CHINA
WOS记录号	WOS:000085751800004
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37324]
专题	中国地质调查局南京地质调查中心
作者单位	1.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Peoples R China. 2.Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China. 3.中国地质调查局南京地质调查中心
推荐引用方式 GB/T 7714	Yang, ZL,Shen, WZ,Shen, JL,et al. Isotopic geochronology of the Xianghongdian alkaline complex, northern;margin of the Dabie Mountains, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,1999,73(4):404-410.
APA	Yang, ZL,Shen, WZ,Shen, JL,Tao, KY,&Xie, FG.(1999).Isotopic geochronology of the Xianghongdian alkaline complex, northern;margin of the Dabie Mountains, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,73(4),404-410.
MLA	Yang, ZL,et al."Isotopic geochronology of the Xianghongdian alkaline complex, northern;margin of the Dabie Mountains, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 73.4(1999):404-410.