Gold deposits in Beishan Mountain, Northwestern China

doi:10.1111/j.1751-3928.2004.tb00209.x

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院矿产资源研究所

	Gold deposits in Beishan Mountain, Northwestern China
	Jiang, SH; Nie, FJ; Liu, Y
刊名	RESOURCE GEOLOGY
	2004
卷号	54 期号:3 页码:325-340
关键词	geological features gold deposit Hercynian granite ore genesis Beishan Mountain China
ISSN号	1344-1698
DOI	10.1111/j.1751-3928.2004.tb00209.x
英文摘要	The Beishan Mountain spans three provinces-Gansu, Xinjiang and Inner Mongolia, having an area of 120,000 km(2). Tectonically, it transverses three different tectonic units, i.e. Siberia, Kazakhstan and Tarim plates, and is composed of nine terrains with widely exposed Precambrian and Paleozoic strata, complex structures, intensive magmatic activities and widespread ore deposits. It is not only a main part of Tianshan-Yinshan-Great Hinggan metallogenic belt in China, but also a key to understand the evolution of central-Asian orogenic system.;At present, more than 100 gold deposits and prospects have been discovered, explored and mined, among which Nanjinshan, Mazhuangshan, Liushashan, Jinwozi, Zhaobishan and Xiaoxigong are the most important ones. Based on the host rocks and the geological features, all these gold occurrences can be subdivided into three groups (or types): (1) hosted by Carboniferous or Permian volcanic or subvolcanic rocks; (2) hosted by or related to plutonic intrusions; and (3) hosted by Precambrian metamorphic rocks. The first group includes the Mazhuangshan gold deposit, which occurs in Hercynian quartz porphyry and rhyolite porphyry as gold-bearing quartz veins. The second group is composed of the Liushashan, Nanjinshan, Zhaobishan and Jinwozi gold deposits. Gold mineralization at these four deposits occurs within Hercynian granitoids intrusions or late Paleozoic sedimentary rocks as quartz veins, veinlets and altered rocks. The Xiaoxigong gold deposit belongs to the third group, and is hosted by Precambrian schist, amphibolite and migmatite as quartz veins and altered rocks.;Isotopic age dating data, geological and geochemical evidence suggest that most of the groups I and 2 gold deposits were generated during the emplacement of the Hercynian or partly Indosinian intrusions. These intrusions may provide both heat and metals for groups I and 2 deposits. In contrast, although the formation is closely related to the Hercynian magmatism, the ore-forming materials of the group 3 deposits may not only come from the intrusions, but also from the Precambrian metamorphic rocks.
学科主题	矿床地质
WOS关键词	MODEL
WOS研究方向	Geology ; Mineralogy
语种	英语
出版者	SOC RESOURCE GEOLOGY
WOS记录号	WOS:000224904700008
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37701]
专题	中国地质科学院矿产资源研究所
作者单位	Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China.
推荐引用方式 GB/T 7714	Jiang, SH,Nie, FJ,Liu, Y. Gold deposits in Beishan Mountain, Northwestern China[J]. RESOURCE GEOLOGY,2004,54(3):325-340.
APA	Jiang, SH,Nie, FJ,&Liu, Y.(2004).Gold deposits in Beishan Mountain, Northwestern China.RESOURCE GEOLOGY,54(3),325-340.
MLA	Jiang, SH,et al."Gold deposits in Beishan Mountain, Northwestern China".RESOURCE GEOLOGY 54.3(2004):325-340.