SHRIMP U-Pb zircon ages of metamorphic rocks and veins in the Xiaoqinling area, Henan, and their geological significance

CORC > 中国地质调查局 > 中国地质调查局

	SHRIMP U-Pb zircon ages of metamorphic rocks and veins in the Xiaoqinling area, Henan, and their geological significance
	Li, HM (Li HouMin); Chen, YC (Chen YuChuan); Wang, DH (Wang DengHong); Ye, HS (Ye HuiShou); Wang, YB (Wang YanBin); Zhang, CQ (Zhang ChangQing); Dai, JZ (Dai JunZhi)
刊名	ACTA PETROLOGICA SINICA
	2007
卷号	23 期号:10 页码:2504-2512
关键词	SHRIMP U-Pb zircon age granite-pegmatite granite-gneiss gold-bearing quartz vein xiaoqinling Henan
ISSN号	1000-0569
英文摘要	This paper reports the SHRIMP U-Pb dating of zircons from granite-pegmatite, granite-gneiss and gold-bearing quartz veins in the Xiaoqinling area, Henan. The zircons from granite-pegmatite veins are magmatic in origin and yield a weighted average Pb-207/Pb-206 age of 1955 +/- 30Ma with MSWD = 1. 4. The zircons from granite-gneiss are complex in origin and their "mantles" of metamorphic origin yield a Pb-207/Pb-206 weighted average age of 2462 +/- 20Ma with MSWD = 2. 0 and the upper intercept ages of their discordia trend lines due to Pb loss range from 2400 to 2600 Ma. The zircons in the gold-bearing quartz veins are relict ones and yield a weighted average Pb-207/Pb-206 age of 1995 +/- 86 Ma with MSWD = 0.092. These age data provide more accurate age evidence for the tectonic evolution in the Xiaqinling area 2400 similar to 2600 Ma and 1900 similar to 2000 Ma represent the ages of the first and second phases of metamorphism in the Xiaoqinling area respectively. The gold-bearing quartz veins were formed after 2000 Ma, and there is no hydrothermal zircons in the quartz veins.
学科主题	变质岩岩石学
WOS关键词	CHINA
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000254139000018
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38392]
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	Li, HM ,Chen, YC ,Wang, DH ,et al. SHRIMP U-Pb zircon ages of metamorphic rocks and veins in the Xiaoqinling area, Henan, and their geological significance[J]. ACTA PETROLOGICA SINICA,2007,23(10):2504-2512.
APA	Li, HM .,Chen, YC .,Wang, DH .,Ye, HS .,Wang, YB .,...&Dai, JZ .(2007).SHRIMP U-Pb zircon ages of metamorphic rocks and veins in the Xiaoqinling area, Henan, and their geological significance.ACTA PETROLOGICA SINICA,23(10),2504-2512.
MLA	Li, HM ,et al."SHRIMP U-Pb zircon ages of metamorphic rocks and veins in the Xiaoqinling area, Henan, and their geological significance".ACTA PETROLOGICA SINICA 23.10(2007):2504-2512.