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Acta Geologica Sinica(English Edition) 1996年第3期70卷 274-289页

作者： Zhang Ligang, Liu Jingxiu, Yu Guixiang and Chen Zhensheng Yichang institute of geology and mineral resources, CAGS, Yichang, Hubei Jiang Minxi Y ichang institute of geology and mineral resources CAGS Yichang Hubei

The δ18O values of vein quartz of different stages from the Yinshan ore deposit are constant around 16‰ and the calculated δ18OH2O values attain 8‰± ; the δDH2O values of fluid inclu-sions in vein quartz are constant at about-60‰. From the surface down to 1200 m below the δ18O values of altered rocks gradually decrease from 15‰± to 11‰± . Various water-rock inversion calculations indicate that the ore fluids were formed by the interaction between meteoric water and phyllite at 350℃ and the effective W/ R value of around 0.1. When the water-rock exchange in the upper mineralization system took place, the effective W / R value increased to 5.0 or more. As a result, an evolution and mineralization model of a buffered open system with two-stage water-rock interactions is proposed in this study.

关键词： H and O isotopes water-rock exchange buffered open system Yinshan of Jiangxi Province

DIVISION OF CARBONIFEROUS COAL-ACCUMULATING AGES, REGIONS AND ZONES IN NORTH CHINA

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Chinese Science Bulletin 1989年第13期34卷 1110-1115页

作者：张志存 Yichang institute of geology and mineral resources MGMR

During the middle-late Carboniferous, the Yumengou Group, a series of the paralic coal-bearing deposits, was formed in North China gigantic subsidence between the Yinshan and the Qinling gigantic latitudinal tectonic zones. In the Yumengou Group the coal-forming actions occurred many times, in which the coal-accumulating actions forming industrial high seams repeatedly occurred, too.

关键词： North China Carboniferous coal-accumulating age coal-accumulating region coal-accumulating zone

Sr and Nd Isotopic Characteristics and Magma Genesis of Mesozoic Volcanic Rocks Along the Coastal Region of Southeastern China

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Acta Geologica Sinica(English Edition) 1996年第3期70卷 260-273页

作者： Xue Huaimin, Tao Kuiyuan and Shen JialinNanjing institute of geology and mineral resources, Chinese Academy of Geological Sciences, Nanjing, Jiangsu Jiang Minxi Nanjing institute of geology and mineral resources Chinese Academy of Geological Sciences Nanjing Jiangsu

The Mesozoic volcanic rocks in the coastal region of southeastern China were superimposed on some different basement tectonic elements. The volcanic rocks developed in these different basement tectonic elements have great differences in Sr and Nd isotopic compositions. The rocks in western Zhejiang and northeastern Jiangxi Provinces which belong to the Lower Yangtze subplate have lower initial 87Sr/ 86Sr ratios, but are higher in initial Nd isotopic ratios. The initial 143Nd / 144Nd values of the volcanic rocks developed in the Cathaysian subplate increase clearly from early to late in time, and from the core of the Wuyishan uplift coastwards constantly, but the initial 87Sr/86Sr values tend to decrease. The isotopic characteristics and their spatial variations in Mesozoic volcanic rocks in the study region are, to a great extent, manifestations of the isotopic characteristics in basement metamorphic complexes, and the generation of the Mesozoic acid magma in this region is attributed to the recycling of pre-existing crustal materials.

关键词： Nd Sr and Nd Isotopic Characteristics and Magma Genesis of Mesozoic Volcanic Rocks Along the Coastal Region of Southeastern China

^(207)Pb/^(206)Pb Zircon Dating of the Huangtuling Hypersthene-Garnet-Biotite Gneiss from the Dabie Mountains, Luotian County, Hubei Province, China: New Evidence for Early Precambrian Evolution

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Acta Geologica Sinica(English Edition) 1999年第1期73卷 78-83,127-128页

作者： JIAN Ping YANG Weiran and ZHANG Zichao institute of geology,CAGS,26 Baiwanzhuang Rd, Beijing 100037 China University of Geosciences, Wuhan, Hubei 430074 Yichang institute of geology and mineral resources, CAGS, Yichang, Hubei 443003 CAGS Inst Geol Beijing 100037 Peoples R China China Univ Geosci Wuhan 430074 Hubei Peoples R China CAGS Yichang Inst Geol & Mineral Resources Yichang 443003 Hubei Peoples R China

The Huangtuling hypersthene-garnet-biotite gneiss at Luotian County, Hubei Provine, is a typicalgranulite-facies rock of the Dabie Group Complex in the Dabie orogenic belt. Investigations on the morphology andoccurrence of zircons and their internal structures shown in the thin sections lead to the recognition of three types ofzircons, which are in good agreement with the types identified on the basis of morphology, colour and external fea-tures from the related zircon concentrates. The observation of zircons in the rock reveals that part of type 1 zirconsshow signs of a double-layered structure. The interval part existed in the protolith prior to the granulite-facies meta-morphism. Type 2, the prismatic zircons which mainly occur in garnet and hypersthene are metamorphic minerals ofthe granulite-facies metamorphism. Type 3, the round multifaceted zircons in felsic minerals and biotite, are proba-bly attributed to a later geological event related to migmatization. The ^(207)Pb/^(206)Pb zircon dating by direct evaporationon (thermal evaporation ion mass spectrometer) yields ages ranging from 2814 Ma to 1992 Ma. The age discrepancyamong these different zircon types is conspicuous. The yellow-brown(type 1) zircons give ages of 2814±29 Ma to2527±6 Ma, the prismatic euhedral zircons (type 2), 2456±7 Ma to 2254±4 Ma, and the round multifaceted zircons(type 3), 1992±10 Ma. The results are geologically interpreted in consideration of the complicated behaviours of zir-cons during Precambrian geological evolution of the Dabie area. (1) If the protolith of the gneiss is a sedimentaryrock, then type 1 zircons are clastic ones and the ages 2814±29 Ma and 2811±27 Ma may reflect the minimum age ofthe rocks of its source region. also the first geological event in the area. Sedimentation of the protolith occurred be-tween 2814 Ma and 2527 Ma, probably close to 2814 Ma. If the protolith is a volcanic rock, then the formation age ofthe supracrustal rocks of the Dabie Group Complex is

关键词： Dabie Mountains granulite facies Archaean multistage evolution zircon 207~Pb/206~Pb

Geochronology and Geochemical Characteristics of the Early Mesozoic Tangquan Pluton in Southwestern Fujian and Its Tectonic Implications

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Acta Geologica Sinica(English Edition) 2003年第3期77卷 361-371页

作者： MAO Jianren, HU Qing, XU Naizheng, XIE Fanggui and TAO Kuiyuan, Nanjing institute of geology and mineral resources, Nanjing, Jiangsu 210016 E-mail: mjrmh@*** Hao Ziguo and Zhu Xiling Nanjing Inst Geol & mineral resources Nanjing 210016 Jiangsu Peoples R China

The Tangquan granodioritic pluton in Dalian County, southwestern Fujian, China, which extends in a NE direction with an exposed area of about 130 km2, used to be considered a product of Early Cretaceous magmatism. The present study suggests for the first time that the pluton was formed in the Early Jurassic by using multiple methods for isotopic dating, which give zircon U-Pb ages of 186.8 Ma and 179.0 Ma, Rb-Sr isochron age of 162.02±4.5 Ma, and biotite 40Ar/39Ar plateau age of 158.1±0.7 Ma. The cooling rate for the pluton was relatively low (4.76℃/Ma) during the early stage (183-162 Ma) because of the compressional environment. It was emplaced in a higher cooling rate (50℃/Ma) in an extensional environment during the later stage (162-158 Ma). The granodiorites are metaluminous-peraluminous, relatively enriched in Na2O and depleted in K2O, and characteristic of I-type granites of crust-mantle mixed sources. They are moderately enriched in Rb, Th, Hf and LREE, and depleted in Ti, Nb, Ta and Sr, and have geochemical features of cal-alkaline rocks of an island arc or active continental margin. Their (87Sr/86Sr)i ratio varies from 0.70769 to 0.70822, εNd(t) from -9.68 to -10.07 and TDM from 1.52 to 1.55 Ga. They were formed by mixing of mantle-derived mafic magma with the granitic magma resulting from partial melting of crust-derived materials in an upwelling of the asthenospheric mantle in South China during the Early Mesozoic.

关键词： granodiorite Early Jurassic petrogenesis tectonic setting southwestern Fujian China

CALCISPONGES AND HYDROZOANS FROM PERMIAN REEFS IN WESTERN GUANGXI

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古生物学报 2002年第3期 343-348页

作者： FAN Jia Song 1) , WANG Yu Mao 2) , and WU Ya Sheng 1) 1) institute of geology and Geophysics, the Chinese Academy of Sciences, Beijing 100029 2) The second geological team, Guangxi bureau of geology and mineral resources, Nanning 53000

ＳｕｍｍａｒｙＴｈｅｐｒｅｓｅｎｔｐａｐｅｒｄｅｓｃｒｉｂｅｓｂｒｉｅｆｌｙｓｏｍｅｇｅｎｅｒａｌｆｅａｔｕｒｅｓｏｆｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｅｘｐｏｓｅｄｉｎＴｉａｎｌｉｎ ,ＬｉｎｇｙｕｎａｎｄＦｅｎｇｓｈａ... 详细信息

ＳｕｍｍａｒｙＴｈｅｐｒｅｓｅｎｔｐａｐｅｒｄｅｓｃｒｉｂｅｓｂｒｉｅｆｌｙｓｏｍｅｇｅｎｅｒａｌｆｅａｔｕｒｅｓｏｆｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｅｘｐｏｓｅｄｉｎＴｉａｎｌｉｎ ,ＬｉｎｇｙｕｎａｎｄＦｅｎｇｓｈａｎｃｏｕｎｔｉｅｓ,Ｇｕａｎｇｘｉ,ｗｈｅｒｅａｂｕｎｄａｎｔｆｒａｍｅｂｕｉｌｄｉｎｇｏｒｇａｎｉｓｍｓｉｎｃｌｕｄｉｎｇｃａｌｃｉｓｐｏｎｇｅｓ,ｈｙｄｒｏｚｏａｎｓａｎｄｏｔｈｅｒｓａｒｅｗｅｌｌｐｒｅｓｅｒｖｅｄ .7ｇｅｎｅｒａｏｆｓｐｈｉｎｃｔｏｚｏａｎｓｐｏｎｇｅｓ,3ｇｅｎｅｒａｏｆｉｎｏｚｏａｎｓｐｏｎｇｅｓ ,ｏｎｅ“ｈｙｄｒｏｚｏａｎ”ｇｅｎｕｓａｎｄａｆｅｗｒｅｃｅｐｔａｃｕｌｉｔｉｄｓａｒｅｄｅｓｃｒｉｂｅｄｈｅｒｅ .Ｔｈｅｓｐｈｉｎｃｔｏｚｏａｎｓｉｎｃｌｕｄｅｔｈｅｆｏｌｌｏｗｉｎｇｇｅｎｅｒａ :Ｓｔｙｌｏｔｈａｌａｍｉａ ,Ｌｉｃｈｕａｎｏｓｐｏｎｇｉａ ,Ｔｅｂａｇａｔｈａｌａｍｉａ ,Ｉｍｂｒｉｃａｔｏｃｏｅｌｉａ ,Ｉｎｔｒａｓｐｏｒｅｏｃｏｅｌｉａ ,ＲｈａｂｄａｃｔｉｎｉａａｎｄＬｉｎｇｙｕｎｏｃｏｅｌｉａ .ＴｈｅｉｎｏｚｏａｎｓｐｏｎｇｅｓａｒｅＰｅｒｏｎｉｄｅｌｌａ ,ＩｎｔｒａｔｕｂｏｓｐｏｎｇｉａａｎｄＣａｖｕｓｏｎｅｌｌａ .ＴｈｅｈｙｄｒｏｚｏａｎｓａｒｅｒｅｐｒｅｓｅｎｔｅｄｏｎｌｙｂｙｏｎｅｇｅｎｕｓＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｎｃｌｕｄｉｎｇ 3ｓｐｅｃｉｅｓ.Ｗｉｔｈｉｎｔｈｅｓｅｆｏｒｍｓ,Ｌｉｎｇｙｕｎｏｃｏｅｌｉａｓｐｈｅｒｉｃａｉｓｅｓｔａｂｌｉｓｈｅｄｈｅｒｅａｓａｎｅｗｇｅｎｕｓａｎｄａｎｅｗｓｐｅｃｉｅｓ ,ｗｈｉｌｅＬｉｃｈｕａｎｏｓｐｏｎｇｉａｇｕａｎｇｘｉｅｎｓｉｓｉｓｒｅｇａｒｄｅｄａｓａｎｅｗｓｐｅｃｉｅｓ .ＡｌｌｏｆｏｔｈｅｒｆｏｒｍｓｍｅｎｔｉｏｎｅｄａｂｏｖｅｗｅｒｅｆｏｕｎｄｕｓｕａｌｌｙｉｎｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｏｆＳｏｕｔｈＣｈｉｎａ .ＳｅｎｏｗｂａｒｉＤａｒｙａｎ(1990 ) ｐｒｏｐｏｓｅｄｔｈａｔｔｈｅＣｙｓｔａｕｌｅｔｅｓ,ＡｓｃｏｓｙｍｐｌｅｇｍａａｎｄＬｉｃｈｕｎｏｓｐｏｎｇｉａｓｈｏｕｌｄｂｅｓｕｂｓｔｉｔｕｔｅｄｂｙｅａｒｌｉｅｒｅｓｔａｂｌｉｓｈｅｄｇｅｎｕｓＤｉｓｃｏｓｉｐｈｏｎｅｌｌａＩｎａｉ (1936 ) ,ｂｕｔＬｉｃｈｕａｎｏｓｐｏｎｇｉａｉｓｑｕｉｔｅｄｉｆｆｅｒｅｎｔｆｒｏｍＤｉｓｃｏｓｉｐｈｏｎｅｌｌａｂａｓｅｄｏｎｇｅｎｅｒａｌｓｈａｐｅｓ,ｏｕｔｌｉｎｅｓｏｆｃｈａｍｂｅｒｓａｎｄｔｈｅａｂｓｅｎｃｅｏｆｖｅｓｉｃｕｌａｒｔｉｓｓｕｅｉｎｔｈｅｃｅｎｔｒａｌｔｕｂｅｓ,ｔｈｅｒｅｆｏｒｅＬｉｃｈｕａｎｏｓｐｏｎｇｉａｉｓｒｅｇａｒｄｅｄｓｔｉｌｌａｓａｎｉｎｄｅｐｅｎｄｅｎｔｇｅｎｕｓｗｉｔｈｉｎｔｈｅｓｐｈｉｎｃｔｏｚｏａｎｓ.ＴｈｅｎｅｗｇｅｎｕｓＬｉｎｇｙｕｎｏｃｏｅｌｉａｈａｓｓｏｍｅｃｏｍｍｏｎｓｉｍｉｌａｒｉｔｉｅｓｗｉｔｈＳｏｌｌａｓｉａａｎｄＧｉｒｔｙｏｃｏｅｌｉａ ,ｂｕｔｔｈｅａｂｓｅｎｃｅｏｆｐｏｒｅｓａｎｄｔｕｂｅｓｏｆｖａｒｉｏｕｓｋｉｎｄｓｏｎｔｈｅｗａｌｌｓｏｆｓｐｈｅｒｉｃａｌｃｈａｍｂｅｒｓｃａｎｎｏｔｂｅｐｅｒｍｉｔｔｅｄｔｏｉｎｃｌｕｄｅｔｈｅｐｒｅｓｅｎｔｎｅｗｆｏｒｍｉｎｔｏｅｉｔｈｅｒｏｆｔｗｏｇｅｎｅｒａ ,ｔｈｅｒｅｆｏｒｅａｎｅｗｇｅｎｕｓｉｓｅｓｔａｂｌｉｓｈｅｄｈｅｒｅｆｏｒｔｈｉｓｆｏｒｍ .ＩｎｔｈｉｓｐａｐｅｒｔｈｅｇｅｎｕｓＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｓｓｔｉｌｌｖｉｅｗｅｄａｓａｇｅｎｕｓｗｉｔｈｉｎｔｈｅｈｙｄｒｏｚｏａｎｃｌａｓｓｒａｔｈｅｒｔｈａｎｔｈｅＩｎｏｚｏａｎｏｒｄｅｒｂｅｃａｕｓｅＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｓｃｈａｒａｃｔｅｒｉｚｅｄｂｙｔｈｅｉｒｒａｔｈｅｒｒｅｇｕｌａｒｄｉｓｔｒｉｂｕｔｉｏｎｏｆｒａｄｉａｌｔｒａｂｅｃｕｌａｅ .Ｔｈｅｓｅｔｒａｂｅｃｕｌａｅｃａｎｎｏｔｂｅｃｏｎｓｉｄｅｒｅｄａｓｆｉｂｒｅｓｏｆｉｎｏｚｏａｎｓｐｏｎｇｅｓ,ａｎｄｔｈｏｓｅｅｘｈａｌａｎｔｔｕｂｅｓａｒｅｒｅｇａｒｄｅｄｈｅｒｅａｓｃａｎａｌｓｂｅｔｗｅｅｎｔｗｏｔｒａｂｅｃｕｌａｅ

关键词： Sphinctozoan Inozoan Hydrozoan reefs Permian Guangxi ChinaSummary The present paper describes briefly some general features of the Permian reefs exposed in Tianlin Lingyun and Fengshan counties where abundant framebuilding org

Precambrian Geochronology, Chronotectonic Framework and Model of Chronocrustal Structure of the Zhongtiao Mountains

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Acta Geologica Sinica(English Edition) 1992年第1期66卷 23-37页

作者： Sun Dazhong Li Huimin Lin Yuanxian Zhou Huifang Zhao Fengqing Tang Min Tianjin institute of geology and mineral resources, Chinese Academy of Geological Sciences, Tianjin Fei Zhenbi Tianjin institute of geology and mineral resources Chinese Academy of Geological Sciences Tianjin

The Zhongtiao Mountains, a typical exposure area of Precambrian rocks, are a concentration area of vari-ous types of copper deposit. The rocks were dated using several dating methods. Based on the age data ob-tained by means of three methods, several aspects are dealt with: (1) the dating results obtained by differentmethods and their geological implications have been compared; (2) a chronotectonic framework has been con-structed by means of these reliable ages, which indicates that the ages of the rocks of the Proterozoic mobilebelt fall in a time span of 2400 to 2000 Ma during which global magmatic records are lacking and reflects theages of important events in the mobile belt; (3) according to the ages of inherited zircons, neodymium modelage of the depleted mantle sources (T_(DM)) and geochemical and geological data, a model of Precambrianchronocrustal structure has been constructed, representing a typical for the North China craton.

关键词： Precambrian Geochronology Chronotectonic Framework and Model of Chronocrustal Structure of the Zhongtiao Mountains

Sources of Cretaceous Bimodal Volcanic Rocks in the Coastal Region of Southeastern China -- Constrains of the Sr content and its isotopes

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Acta Geologica Sinica(English Edition) 1999年第1期73卷 84-92页

作者： XING Guanfu YANG Zhuliang and TAO Kuiyuan Nanjing institute of geology and mineral resources, Chinese Academy of Geological Sciences,534 East Zhongshan Road, Nanjing 210016 Chinese Acad Geol Sci Nanjing Inst Geol & Mineral Resources Nanjing 210016 Peoples R China

Cretaceous volcanism in the coastal region of southeastern China was characteristized by occurrenceof bimodal volcanics consisting of basalts and rhyolites, the geneses of which are still controversial. Based on the factthat their isotopic compositions are similar but the Sr content of the former is much higher than that of the latter, thispaper discusses the respective sources of the two end-member rocks, and concludes that basalts were derived fromthe subduction-related enriched upper mantle wedge and their isotopic compositions had not been affected by crustalassimilation, whereas rhyolites were formed by remelting of the old metamorphic basement, but they were mixed upwith the underplating basaltic magmas to various degrees so that their Sr isotopic compositions varied significantlyfrom the sources and tended to be homogeneous to the latter.

关键词： Sr content and its isotopes Cretaceous bimodal volcanics coastal region of southeastern China

Sequence Boundary and Sea Level Changes in Western Margin of Upper Yangtze Platform during Permian and Triassic

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Journal of Earth Science 1996年第1期15卷 105-111页

作者： Xu Xiaosong Liu Baojun Zhao Yuguang (Chengdu institute of geology and mineral resources, CAGS, Chengdu 610082)

During Permian and Triassic the western margin of Upper Yangtze platform had experienced an evolution from early rift stage to thermal subsidence and then to foreland basin. The tectonic transformations have resulted in five supersequences and nineteen third-order se- *** the rift stage,transgeressive carbonate platform was built up,while in the thermal subsidence stage,regressive carbonate platform with foreslope was *** closure of the Garze-Litang narrow oceanic basin resulted in the migration of foreland flexure toward the *** carbonate ramp in foreland basin setting was formed during the relative sea level rise which was caused by the change in basin volume.

关键词： Upper Yangtze platform Permian Triassic sequence boundary eustasy.

Discovery of the Changtu Fauna in the Xia' ertai and Hulan Groups in Liaoning and Jilin and Its Significance

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Acta Geologica Sinica(English Edition) 1992年第4期66卷 427-438,445-447页

作者： Liu Xiaoliang Chen Congyun Yang Xuezeng Yang Sen Zhang Jiongfei Gao Yuhua Shenyang institute of geology and mineral resources, Chinese Academy of Geological Sciences, Shenyang, Liaoning Sun Sheping Shenyang institute of geology and mineral resources Chinese Academy of Geological Sciences Shenyang Liaoning

The Ordovician Changtu Fauna is recently discovered in the Xia' ertai and Hulan Groups in northernLiaoning-central Jilin. The fauna, containing 10 genera and 14 species (including 3 new genera, 9 new speciesand an unidentified species), is closely related in evolution with the Early Cambrian Qinghezhen Fauna. Thediscovery of this fauna is significant to the study on the age of the strata, Ordovician biostratigraphy and geo-logical evolution of the tectonostratigraphical terrane on the northern margin of the Sino-Korean plate.

关键词： Northern Liaoning-central Jilin Ordovician Changtu Fauna