Geochronology of the diorite porphyrites in Ning-Wu basin and their metallogenic significances

	Geochronology of the diorite porphyrites in Ning-Wu basin and their metallogenic significances
	Fan Yu 1; Zhou TaoFa 1,2; Yuan Feng 1; Zhang LeJun 1,3; Qian Bing 1; Ma Liang 1; David, R. C.3
刊名	ACTA PETROLOGICA SINICA
	2010-09-01
卷号	26 期号:9 页码:2715-2728
关键词	Metallogenic Epoch Porphyry-like Type Iron Deposits Ning-wu Volcanic Basin Middle-lower Yangtze River Valley Metallogenic Belt Tectonic Setting
ISSN号	1000-0569
文献子类	Article
英文摘要	Ning-Wu basin is the important parts of the Middle-Lower Yangtze River Valley metallogenic belt, where there are widespread porphyry-like type( magnetite-apatite type) iron deposits. However, the researches on precise ore-forming and magmatic activity epoch and tectonic setting are very weak. Based on detailed field geological work, we carried out systematic geochronological study of diorite porphyrite plutons related to porphyry-like type iron deposits in the basin. LA-ICP-MS zircon U-Pb dating for seven diorite porphyrite plutons such as Washan, Taocun, Heshangqiao, Dongshan, Baixiangshan, Hemushan and Gushan intrusions, has been carried out. LA-ICP-MS zircon U-Pb elating yield the ages of 130. 2 +/- 2. 0Ma, 130. 7 +/- 1. 8Ma, 131. 1 +/- 1. 5Ma, 131. 1 +/- 3. 1Ma, 130. 0 +/- 1. 4Ma, 131. 1 +/- 1. 9Ma and 129.2 +/- 1. 7Ma for intrusions respectively. The dating result indicates that different diorite porphyrite plutons in Ning-Wu volcanic basin are all formed in the early stage of Early Cretaceous about 130Ma, which can nearly represent the metallogenetic epoch of the porphyry-like type iron deposits. There are three periods (145 similar to 136Ma, 135 similar to 127Ma, 126 similar to 123Ma) of ore-forming and magmatic activity in the Middle-Lower Yangtze River Valley metallogenic belt. The diorite porphyrite plutons in Ning-Wu basin were the products of the second period magmatic activity and obviously later than the high-k calc-alkaline intrusions related to skarn-porphyry Cu-Au deposits in uplift areas in the Middle-Lower Yangtze River Valley metallogenic belt. The diorite porphyrite plutons in Ning-Wu volcanic basin were thought to be formed under regional lithospheric and thinning environment.
WOS关键词	U-PB AGE ; CU-FE-AU ; YANGTZE-RIVER ; VOLCANIC-ROCKS ; ANHUI PROVINCE ; EASTERN CHINA ; GEOLOGICAL IMPLICATIONS ; SOUTHEASTERN HUBEI ; LOWER REACHES ; SOUTH CHINA
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000283384100015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/72782]
专题	中国科学院地质与地球物理研究所
通讯作者	Fan Yu
作者单位	1.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China 2.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Tasmania, Ctr Excellence Ore Deposit CODES, Hobart, Tas, Australia
推荐引用方式 GB/T 7714	Fan Yu,Zhou TaoFa,Yuan Feng,et al. Geochronology of the diorite porphyrites in Ning-Wu basin and their metallogenic significances[J]. ACTA PETROLOGICA SINICA,2010,26(9):2715-2728.
APA	Fan Yu.,Zhou TaoFa.,Yuan Feng.,Zhang LeJun.,Qian Bing.,...&David, R. C..(2010).Geochronology of the diorite porphyrites in Ning-Wu basin and their metallogenic significances.ACTA PETROLOGICA SINICA,26(9),2715-2728.
MLA	Fan Yu,et al."Geochronology of the diorite porphyrites in Ning-Wu basin and their metallogenic significances".ACTA PETROLOGICA SINICA 26.9(2010):2715-2728.