Paleozoic Epithermal Au and Porphyry Cu Deposits in North Xinjiang, China: Epochs, Features, Tectonic Linkage and Exploration Significance

Resource Geology - Tập 52 Số 4 - Trang 291-300 - 2002
Kezhang Qin1, Shu Sun1, Jiliang Li1, Tonghui Fang2, Wang Shu-lai2, Wei Liu1
1Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China [e-mail: [email protected]]
2Beijing Institute of Geology for Mineral Resources, Beijing 100012, China

Tóm tắt

Abstract. Based on field investigation of large number of ore deposits including some latest discoveries and multidiscipline comprehensive research, we demonstrated the general features of metallic deposits and we suggest that Paleozoic archipelago‐type collisional orogen at North Xinjiang, northwestern China show intimate similarity with the metallogenesis of Southeast Asia Cenozoic archipelago. We briefly described the characteristics of major porphyry‐type, skarn‐type Cu deposits and typical high‐sulfidation type (HS‐type) and low‐sulfidation type (LS‐type) epithermal Au deposits as well as some latest discoveries. Systematic isotopic age‐dating on the Tuwu‐Yandong superlarge porphyry Cu deposits revealed that they formed in Late Devonian to Early Carboniferous in an accretionary arc setting. The tectonic settings of epithermal Au deposits and its linkage with porphyry Cu deposits are further discussed. The formation condition for porphyry Cu deposits is more strict than epithermal Au deposits. The distribution width for porphyry Cu deposits in the orogenic belts is more limited than epithermal Au deposits. The discovery and prospecting progress of the Kalatage HS‐type Cu‐Au deposit were reported. The significance in further exploration was suggested.

Từ khóa


Tài liệu tham khảo

10.1130/0091-7613(1995)023<0337:CFOAPA>2.3.CO;2

10.2113/gsecongeo.87.8.1963

10.1016/0169-1368(95)00033-X

Einaudi M. T., 1982, Advances in Geology of the Porphyry Copper Deposits, Southwestern North America, 185

10.1016/S0040-1951(97)00211-4

10.2113/gsecongeo.89.1.1

Hedenquist J. W., 1996, Epithermal Gold Deposits: Styles, Characteristics, and Exploration, 16

10.1016/S0040-1951(00)00178-5

10.1016/S0040-1951(00)00176-1

10.1111/j.1751-3928.1998.tb00019.x

Izawa E., 1989, Quaternary gold mineralization and its geologic environments in Kyushu, Japan, Econ. Geol. Monogr., 6, 233

Jing J., 1997, Characteristics of Mazhuangshan gold deposit and its metallogenic geochemical conditions, Xinjiang Geol., 15, 327

10.1007/BF02911933

Li H‐Q., 1998, Metallogenic Chronology of Nonferrous and Precious Metallic Ore Deposits in North Xinjiang, China, 264

Li J‐L., 1989, Tectonic relationship between the Junggar residual back‐arc basin and Tianshan orogenic zone, Acta Sediment. Sinica, 9, 53

Qi S‐J., 2000, Characteristics and genesis of silicified rock‐type gold deposits in Tulasu, Yining, Xinjiang Geol., 18, 42

Qin K‐Z., 1997, Metallogenic Systematics of the Intraconti‐nental Magmatism in the Southern Ergun Mo, Cu, Pb, Zn and Ag Belt, Inner Mongolia, NE‐China, 305

Qin K‐Z., 1998, A comparison of subaerial volcano‐porphyry Au, Ag, Pb, Zn, Cu deposit systematics with VHMS analogues, Gold Sci. Tech., 6, 6

Qin K‐Z., 1998, Mesozoic porphyry‐subvolcanic‐epither‐mal Cu, Mo, Pb, Zn and Ag metallogenic systematics, Mineral Deposits, 17, 201

Qin K‐Z., 2000, Metallogeneses in Relation to Central‐Asia Type Orogeny of Northern Xinjiang, 195

10.1080/00206819809465223

Qin K‐Z., 1999, Collision Orogenic Belts of China, 183

Qin K‐Z., 2001, Discovery of the Kalatage Cu‐Au mineralized district and its prospecting potentiality, Paleozoic uplift at the south margin of the Tu‐Ha basin, Chinese Geol., 28, 16

Qin K‐Z., 2001, Temporal‐spatial distribution pattern of metallic deposits: As guides of plate tectonic environments of Northern Xinjiang, 540

Qin K‐Z., 2002, Plate tectonics division, evolution and metallogenic settings in Eastern Tianshan Mts, 210

Rui X‐J., 1993, Primary Gold Deposits in Altay, Xinjiang, 274

Rui Z‐Y., 2001, Advance of the porphyry copper belt of the East Tianshan Mountain, Xinjiang, Chinese Geol., 28, 11

10.1038/364299a0

Sha D‐M., 1998, The fluid inclusion of Axi gold deposit in West Tianshan mountains, Jour. Precious Metal. Geol., 7, 180

Sillitoe R. H., 1989, Gold deposits in Western Pacific island arcs: The magmatic connection, Econ. Geol. Monogr., 6, 274

Wang F‐T., 2001, Characteristics and significance of the Tuwu porphyry copper deposit, Xinjiang, Chinese Geol., 28, 36

Wang S‐L., 2002, Types, characteristics of gold deposits in eastern Tianshan, Xinjiang, and their prospecting directions, 20

10.2113/95.7.1537

10.1093/petrology/41.9.1455

10.1016/S0009-2541(01)00333-3

Windley B. F., 1995, The Evolving Continents, 526

Yin Y‐Q., 1996, Kuorzhenkuola epithermal Au deposit at Sawur Mountains, Xinjiang, Geol. Explor. Non-Ferrous Metals, 5, 278

10.1080/00206819209465586

Zhai W., 1999, Characteristics and genesis of the Yiermand hot‐spring gold deposit in Yining country, Xinjiang, Mineral Deposits, 18, 47

Zhang D‐Q., 1991, The Zijinshan Cu‐Au deposit—The first example of quartz‐alunite type epithermal deposits in the Continent of China, Geol. Rev., 37, 481

Zhang L‐C, 1999, Geochemical dynamics of ore‐forming processes of Shiyingtan epithermal gold deposit, Eastern Tianshan, Jour. Xi'an College Eng., 21, 13

Zhou T‐F., 2000, Mag‐matism and Metallogeny at Nurt Area, Altay, Xinjiang, 127

Thông tin
Thông tin xuất bản

Resource Geology

Tập 52 Số 4

291-300

Thông tin tác giả