Significant achievements and open issues in study of orogenesis and metallogenesis surrounding the North China continent.

	Significant achievements and open issues in study of orogenesis and metallogenesis surrounding the North China continent.
	Chen YanJing 1,2; Zhai MingGuo 3; Jiang ShaoYong 4
刊名	ACTA PETROLOGICA SINICA
	2009-11-01
卷号	25 期号:11 页码:2695-2726
关键词	North China craton Central Asia orogen Central China orogen Metallogenesis Orogenesis
ISSN号	1000-0569
文献子类	Review
英文摘要	The significant achievements in past four-year study of Orogenesis and Metallogenesis Surrounding the North China Continent, which is a huge project granted by the National 973-Program, are briefly summarized in this paper. The concepts of ultramafic-mafic rock-hosted hydrothermal Cu-Ni-precious metals deposit and epizonogenism are defined; and consequently, the hydrothermal ore-systems can be classified into three series, i.e. magmatic, metamorphic and epizonogenic. On the basis of discovery and identification of numerous orogenic-type Ag, Pb-Zn, Cu and Mo deposits in the interest area, a new term of orogenic-type deposits and a new element zoning model for orogenic-type ore-system have been introduced to renew the concept of orogenic-type gold and its crustal continuum model, respectively. Indosinian mineralizations, especially intrusion-related hypothermal Mo mineralization, were determined to have occurred in both southern and northern margins of the North China continent. Intra-continental intrusion-related hypothermal ore-systems are rich in CO(2), K and F, which differ from those developed in island arcs. The Carlin-type and Carlin-like gold deposits in compressive orogenic areas usually contain CO(2)-H(2)O fluid inclusions which cannot be observed the same kind ore-systems developed in back-arc Basin-and-Range provinces. The Central Asian and Central China orogenic belts have been from strongly continental accretion and weakly continental collision and weakly continental accretion and strongly continental collision, respectively, which leads them to have quite different type ore-systems and metallic commodities. The eastern portions of the North China continent and its adjacent orogenic belts accommodate large-scale Yanshanian mineralization gradiently younging eastward, with differing genetic types and metal inventories, which possibly resulted from their tectonic evolution combined with interaction with Pacific plate. Pre-collision hydrothermal ore-systems were reworked more or less, of which some re-mobilized and re-emplaced as other genetic types of ore deposits. Intrusion-related hypothermal Mo mineralizations of ca 1.9 Ga and 1.75 Ga and orogenic type Ag-Au-Mo mineralization of ca 430 Ma were recently discovered in Qinling Mountains, whilst the Mongolia-Hinggan Mountains were reported to have Devonian orogenic Cu-Au lodes, indicating the exploration potential for pre-Mesozoic ore deposits. Ore-system is evidenced to be an ideal probe to geodynamics, and by this way the post-120Ma erosion total of Qinling-Dabie-SuLu orogen is estimated less than 10 km with an average rate of 0.04 mm per year, suggesting that the rapid uplift must occur before 130 Ma if there is. It is constrained that the Paleo-Asian Ocean closed from west to cast along the Solonker-Yanji geosuture during the period of from 260 to 250 Ma; while the northern branch of the Palco-Tethys Ocean was finally closed at ca 220 Ma. The North China craton is revealed to have been involved in supercontinent cycles including Kenor, Columbia, Rodinia, Gondwana and Pangea, as well as the Lomagundi Event which is characterized by positive delta(13)Ccarb excursion; and deposition of the khondalite series in North China craton was dated to be <2.3 Ga.
WOS关键词	YANGSHAN GOLD DEPOSIT ; ORE-FORMING FLUIDS ; U-PB AGES ; RB-SR GEOCHRONOLOGY ; PORPHYRY MO DEPOSIT ; MAFIC DYKE SWARMS ; INNER-MONGOLIA ; HENAN PROVINCE ; ISOTOPE GEOCHEMISTRY ; GEOLOGICAL SIGNIFICANCE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000273455000001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71520]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen YanJing
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Metallogen Dynam, Guangzhou 510640, Peoples R China 2.Peking Univ, Key Lab Orogen & Crust Evolut, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Nanjing Univ, Dept Earth Sci, State Key Lab Mineral Deposits Res, Nanjing 210093, Peoples R China
推荐引用方式 GB/T 7714	Chen YanJing,Zhai MingGuo,Jiang ShaoYong. Significant achievements and open issues in study of orogenesis and metallogenesis surrounding the North China continent.[J]. ACTA PETROLOGICA SINICA,2009,25(11):2695-2726.
APA	Chen YanJing,Zhai MingGuo,&Jiang ShaoYong.(2009).Significant achievements and open issues in study of orogenesis and metallogenesis surrounding the North China continent..ACTA PETROLOGICA SINICA,25(11),2695-2726.
MLA	Chen YanJing,et al."Significant achievements and open issues in study of orogenesis and metallogenesis surrounding the North China continent.".ACTA PETROLOGICA SINICA 25.11(2009):2695-2726.