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Spatial-temporal Frame,Evolution and Mineralization of the Northern Qilian metallogenic province

Acta Geologica Sinica(English Edition) 1997年第2期71卷 204-216页

作者： Sun Haitian Wu Jieren and Li Jinping Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing Xi’an Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, Xi’an, Shaanxi Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing Institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing Xi'an Institute of Geology and Mineral Resources Chinese Academy of Geological Sciences Xi'an Shaanxi Institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing [?]Sun Haitian Born in 1955 got a doctorate degree in 1988 conducted postdoctoral research from 1989 to 1991 in the Department of Geology and Mineral Resource Engineering Norwegian University of Science and Technology. He is now Research Professor at the Institute of Mineral Deposits Chinese Academy of Geological Sciences and has long been engaged in geology metallogenesis and regional metallogeny of metallic ore deposits with emphases on cooper deposits and volcanic and sedex metallic deposits.

Four metallogenic epochs occurred in different tectonic environments during theevolution of the Northern Qilian metallogenic province through the geological time. The Mid-dle Proterozoic metallogenic epoch witnessed the tectonic environment of crustal breakupcaused by mantle diapirism, in which ultramafic-mafic rocks were intruded along beep faultbelts and the superlarge Jinchuan magmatic Cu-Ni sulphide deposit was formed. In theMiddle-Late Proterozoic metallogenic epoch the crust was further broken to form anintracontinental rift, in which the Chenjiamiao style massive Cu-Fe sulphide deposits hosted bybasic volcanic tuff were formed in the lower volcano-sedimentary sequence, while the largesedex type Jingtieshan style Fe-Cu deposits were formed within the upper abyssal carbon-richargillaceous sedimentary sequence. The Early Palaeozoic saw the aulacogen environment, with-in which the Baiyinchang style superlarge massive base and precious metal sulphide depositshosted by quartz keratophyric tuff were formed in the Middle-Late Cambrian rifted island arcand the massive Cu-Zn sulphide deposits and magmatic chromite deposits associated with theophiolite suite were formed in the Early-Middle Ordovician, and the Honggou style massiveCu-Fe sulphide deposits hosted by spilite were formed in the Late Ordovician back-arc basinenvironment. In the Late Palaeozoic-Meso-Cenozoic, the metallogenic province went into anintracontinental orogenic stage characterized by compressive tectonic environment, in whichthere occurred carbonate-quartz vein type and tectono-alteration gold deposits associated withductile-shear structures.

关键词： northern Qilian metallogenic province evolution and mineralization

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metallogenic EVOLUTION AND MODEL OF MANZHOULI-XINBAERHU metallogenic province

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Transactions of Nonferrous Metals Society of China 1992年第2期2卷 8-15页

作者： Wang Zhitian Pan Longju Beijing Institute of Geology for Mineral Resources Beijing 100012China No.706 Party.Nonferrous Metals Geological Exploration Bureau of Heilongjing province

This area is a superlarge potentiality metallogenic province of multimetal resource,belonging to Ergun accretionary fold system of early *** regional basement(Neoproterozoic-Lower Cambrian Series)is the outer extent of the Siberian craton margin,and the metallization in this area was affected intensely by Pacific plate *** NE trending Ergun-Hulun deep-seated fracture controls the giant volcano-magmatic activty and mineralization in this *** cross trending tenso-shear fractures control the formation of ore cluster in this *** major types of ore deposits in this area are porphyry type,subvolcanic hydrothermal vein type and skarn *** are the products of different depths and environments as genetically-related,which can be collectively regarded as porphyry copper-multimetal metallogenic series.

关键词： Manzhouli metallogenic province metallogenic evolution metallogenic model porphyry

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