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Types, Metallogenic Environments and Characteristics of Temporal and Spatial Distribution of Copper Deposits in china

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Acta Geologica Sinica(English Edition) 1989年第1期63卷 79-92页

作者： Wang Zhitian and Qin Kezhang Beijing institute of geology for mineral {3., CNNC, Beijing Zhang Zhongmin Beijing institute of geology for mineral {3. CNNC Beijing

Based upon a comprehensive study of 123.copper deposits in china. this paper reaches the following conclusions: 1. The crust in china was solidified pretty late; with the accretion of the plate, the copper mineralization moved towards its margin in space and became successively younger in age. 2. The major copper ore types ever found in the world have mostly been discovered in china, in which the porphyry type seems to be the most important and the massive sulfide type in the transitional bed between marine clastic and carbonate rocks is clearly defined. 3. Carbonate strata are widespread in china and their deposition lasted for a long geological period, so the proportion of copper deposits occurring in them is large as compared with other parts of the world. 4. Seven metallogenic epochs can be recognized, in which the Mesozoic one plays the leading role and the middle(late) Palaeozoic and Cenozoic ones are next in importance. mineralization was comparatively simple in the early geological period. and became diversified later on. In the early epochs copper deposits related to basaltic magmatism and metamorphosed marine sediments predominated, whereas in the later epochs those related to granitic magmatism and continental sedimentation were dominant. 5. There exist in china thirteen metallogenic provinces, of which the Lower Yangtze downwarping belt, Sanjiang fold system, Jiangnan axis and Xikang-Yunnan axis are of greater significance. 6. The crustal mobility in china was rather pronounced, the polycyclic evolution of the crust has resulted in such obvious phenomena as the inheritance of mineralization, the coexistence of various types and the superposition of different genetic types.

关键词： Metallogenic Environments and Characteristics of Temporal and Spatial Distribution of Copper Deposits in china Types

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Ore-forming fluid and mineralization of Caijiaying and Dajing polymetallic ore deposits

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Science china Earth Sciences 2004年第2期47卷 97-107页

作者： WANG Lijuan,WANG Jingbin, WANG Yuwang & ZHU Heping1. Key Laboratory of mineral resources, institute of {3. and Geophysics, Chinese Academy of Sciences, Beijing 100029, china 2. Beijing institute of {3. for mineral resources, Beijing 100012, china Correspondence should be addressed to Wang Lijuan (email: wlj@***) Key Laboratory of mineral resources Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China Beijing institute of geology for mineral {3. Beijing China

Fluid inclusions from the Dajing and Caijiaying deposits have nearly the same homogenization temperature. Correlation between temperature and salinity shows that both Sn- and Cu-bearing fluids Sn and Cu were present in the Dajing deposit but only one kind of fluids continuously evolved in the Caijiaying deposit. Study on rare earth elements (REE) in ancient fluid from the inclusions indicates that the fluid of Sn mineralizing stage in Dajing was derived from remelting magma of the continental crust, and the fluid of Cu-Pb-Zn mineralizing stage in the Dajing deposit and the fluid of Cu-Pb-Zn mineralization in the Caijiaying deposit were derived from the mantle. It is concluded that the Cu-Pb-Zn mineralizations in the Dajing and Caijiaying deposits resulted from the identical tectono-thermal event of magma-fluids induced by Mesozoic tectonic transition and extension in the eastern part of North china Craton.

关键词： Caijiaying, Dajing, Mesozoic tectonic transition, ore-forming fluid, REE.

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Discovery of submicron diamonds within kimberlite in Liaoning Province, china and its significance

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Chinese Science Bulletin 1997年第11期42卷 939-941页

作者： BAO Yanan, T. V. Dubuchick and T. D. Liabchekov1. Graduate School in Beijing, Chinese Mining University, Beijing 100083. china 2. Moscow resources institute of {3. Materials, Russia 3. resources institute of Deposit geology, Russian Academy of Sciences, Russia Graduate School in Beijing Chinese Mining University Beijing China Moscow resources institute of mineral Materials Russia resources institute of Deposit geology Russian Academy of Sciences Russia

ALTHOUGH a lot of research work on diamond mineralogy has already been done,the formationand development of diamond leave much to be *** have done some researches onthe diamond samples with obvious crystal-growing cha... 详细信息

关键词： submicron diamond lath-shape aggregative parent material.

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A New Genus of Fossil Cycads Yixianophyllum *** the Late Jurassic Yixian Formation,Western Liaoning,china

A New Genus of Fossil Cycads Yixianophyllum *** the Late Jur...

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第五届全国苏铁学术会议

作者： ZHENG Shaolin (shenyang institute of geology and {3. resources,Ministry of Land and resources shenyang,Liaoning 110032. LI Nan (Botanical Gardens of Xianhu,Shenzhen,Guangdong 518004) LI Yong (Botanical Gardens of Xianhu,Shenzhen,Guangdong 518004) ZHANG Wu (shenyang institute of geology and {3. resources,Ministry of Land and resources shenyang,Liaoning 110032. BIAN Xiongfei (shenyang institute of geology and {3. resources,Ministry of Land and resources shenyang,Liaoning 110032.

A new genus of fossil Cycads,Yixianophyllum ***.,is reported *** specimens were collected from the southern hill of Jinjiagou village,Toudaohezi Town, Yixian County,western Liaoning Province,*** fossil plant-bearing bed belongs to the lower part,the Zhuanchengzi bed,of the Upper Jurassic Yixian Formation(Yixianian). The new genus in leaf shape,venation and epidermal structure shows a transitional form between Mesozoic Cycads(Ctenis,Nilssonia)and modern Cycads(Stangeria and Encephalartos).Since the features of these specimens differ from any known genera of Cycads,a new genetic name Yixianophyllum is proposed for these *** species, Yixianophyllum jinjiagouense *** *** described here.A supposed evolutionary tendency of Cycadean leaf-forms with Taeniopteris-type is discussed.

关键词： western Liaoning Yixian Formation Late Jurassi Cycads Yixianophyllum gen.nov. epidermal structures

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CH_4-rich fluid inclusions in the Yushigou mantle peridotite and their implications, North Qilian Mountains, china

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Chinese Science Bulletin 1999年第21期44卷 1992-1995页

作者： SU Li, SONG Shuguang and WANG ZhihaiXi’an institute of geology and mineral {3., CAGS, Xi’an 710054, china Xi’an institute of geology and mineral Rrsources CAGS Xi’an China

Studies were carried out on the early phase of fluid inclusions which occur in residual olivines in harzburgite from the Yushigou ophiolitic mantle peridotite, the North Qilian Mountains. Components of these inclusions, analyzed by micro laser Raman spectroscopy, are dominantly CH4 (70%-95%) with minor H2, N2, H2S,CO2,C2H4,C2H6, and C3.6, but

关键词： CH4-rich fluid mantle peridotite North Qilian Mountains.

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Genesis and district mineralization model of lead-zinc deposits from the eastern margin of Kangdian axis

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Chinese Science Bulletin 1999年第S2期44卷 74-77页

作者： GUAN Shiping and LI Zhongxiong Chengdu institute of geology and mineral {3., Chengdu 610082, china Chengdu institute of geology and mineral {3. Chengdu 610082 China

SITUATED on the eastern margin of Kangdian axis the lead-zinc mineral belt is an important mineral occur- rence of lead-zinc in southwestern china. It is 1 200 km in length from Kangding in Sichuan Province tonortheastern Yunnan Province, and 500 km in width from west to east. There are four large deposits,fourteen middle deposits and many small deposits or mineralized spots. Famous large deposits such as Doliangzi, Tianbaoshan, Chipu and Kuangshanchang are distributed in this belt. 1 Geological setting There are many mineral-bearing strata in carbonate-hosted lead-zinc deposits of this mineral belt,such as Dengying formation （Zbdn）, Longwangmiao formation （2 l） Erdaoshui formation （ 3./sub> e ）,Daqing formation（O2 d ）, Daguan formation （S2d ）, the lower Devonian and Baizuo formation （ C1 b）.

关键词： genesis district mineralization model lead-zinc deposits Kangdian axis.

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The modes of gold-migration in the gossan-type gold deposit

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Chinese Science Bulletin 1999年第S2期44卷 32-33页

作者： HE Jurui and LI Ying Nanjing institute of geology and mineral {3., Nanjing 210016, china Nanjing institute of geology and mineral {3. Nanjing 210016 China

MORE than 3. gossan-type gold deposits have beed discovered in the Middle-Lower Yangtze River *** profile of gold-bearing gossan can be divided into four subzones from upper to lower: （i） gold-deficient or gold-leached gossan (Au contents （0.1-0.8）×10-6) transitonal subzone; （ii） secondary goldconcentration subzone (Au（4-20）×10-6); （iii） oxide and sulfide transitional subzone (Au（0.5-1.5）× 10-6); （iV） Primary sulfide ore (Au（0.5-1） × 10-6). Au Concentration in the subzone （ii） is 2-20 times higher than that in subzone （iV）. Obviously migration and secondary concentration of Au hadhappened in the process of oxidation of primary sulfides. Some geologists indicated that there would be four modes of gold-migration and concentration:（1） gravity separation （mechanism）; （2） organic complex or adsorption; （3. colloidal

关键词： gold migration gossan-type gold deposit.

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FOSSIL HAGLIDAE(ORTHOPTERA)IN china

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Science china Chemistry 1982年第10期29卷 1118-1132页

作者：洪友崇 Tianjin institute of geology and mineral {3. Ministry of Geology

The present paper discusses Haglidae (Orthoptera) and its stratigraphic and geographicdistributions in china. Basing on our fossil specimens and the known fossil records of insectsthe author tries to discuss the taxonomy of the family Haglidae, including its subfamilies andgenera. Four new genera and seven new species are established.

关键词： Cu FOSSIL HAGLIDAE ORTHOPTERA)IN china length

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DISCOVERY OF NEW FOSSIL SPIDERS IN AMBER OF FUSHUN COALFIELD

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Science in china,Ser.B 1982年第4期25卷 431-437页

作者：洪友崇 Tianjin institute of geology and mineral {3. Ministry of geology

A new genus, Sinodictyna （Archanda）, has been obtained from amber on the main coalbeds of the Gucheggzi Formation (E2g1), Fush?n Coalfield In Liaoning Province. It suggeststhat Sinodictyna belongs to a regional form in china and that it differs from European Balticamber Eolathys in the chelate teeth, pedipal, walking legs and its appendages. New genusdiscovered first in china fills in tlie gaps in the field of paleontology of china.

关键词： length

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THE DEFLUIDIZATION OF THE ROCKS AND GENESIS OF GOLD DEPOSITS DURING DEFORMATION AND METAMORPHISM: AN EXAMPLE FROM THE JINPING MOUNTAIN

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地学前缘 2000年第S1期7卷 411-412页

作者： Li Sheng(Chengdu institute of geology and mineral {3., Chengdu, 610082,china)

The Jinping mountain region on the western margin of the Kang\|Dian axis is situated in the area bordered by the eastern margin of the Qinghai—Xizang Plateau on the west and the western margin of the Yangtze plate on the east, and consists of three\|layer structures: basement (Kang\|Dian axis), detachment zone (sliding surface of lateral extension and thrusting) and the overburden of the Jinping mountain nappe. The intense intracratonic deformation and metamorphism within the Kang\|Dian axis resulted in the activation, migration and enrichment of mineral elements and finally the formation of ore deposits in the Jinping mountain region. As for the Kang\|Dian axis as the crystalline and folded basement, the lower background values ((0 4～0 8)×10 -9 ) of the element Au don’t represent the initial contents, which have mostly been activated and moved away.. In the Lizhuang\|Lawo\|Bazhe zone as the detachment structural zone, the high er background values ((6～10)×10 -9 ) of the element Au don’t represent the initial contents as well, which have received more gold from the multistage ductile shear zones in the detachment zone. As a result of the lower degrees of deformation and metamorphism within the overburden of the Jinping mountain nappe, the lower temperatures and pressures are insufficient to activate and migrate the element Au; the Au contents available represent the initial Au contents ranging between 1 6 and 2×10 -9 , which are equal to the crustal clarke values from Li Tong and Dai Wentian. The activation and migration of the element Au are believed to be governed by the temperatures and transported media especially variable valent elements and their compounds (principally H 2O, Cl, CO 2 , S and Fe). The associated sediments are also correlated with the transported media especially the valence numbers of the above\|mentioned multivalent elements. The element Au often behaves as a liquid phase element and a multivalence\|phile element in the course of deformation a

关键词： defluidization source bed basement detachment zone of ext ension and thrusting (slide surface) overburden

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