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Acta Geologica Sinica(English Edition) 2000年第2期74卷 207-212页

作者： ZHOU Taofa yue shucang Department of Resources and Environmental Science Hefei University of TechnologyTunxi Road 193Hefei 230009Anhui

Studies of the Pb, Sr and Nd isotopic composition of Mesozoic intrusive rocks indicate that the basement of the copper-gold metallogenic belt of the middle and lower reaches of the Yangtze River has “two-layer structure” and partly has “multi-layered structure”, and is inhomogeneous and shows the distinct feature of E-W provincialism. The calculated model lead ages (t1) are mostly greater than 2600 Ma, and the model neodymium ages (TDM) vary from 953 to 2276 Ma and concentrate in two time intervals: 1800–2000 Ma and 1200–1600 Ma. It is concluded that the basement of the MBYR is composed of the Late Archaeozoic to Middle Proterozoic metamorphic series and that the crust was initiated in the Archaean and continued to grow in the Early and Middle Proterozoic, and the proportion of new crust formed by mantle differentiation during the Late Proterozoic is low.

关键词： basement crustal age Pb Sr and Nd isotopes metallogenic belt of the middle and lower reaches of the Yangtze River

SHRIMP U-Pb Zircon Age of the Ka'erjiao Intrusion in the Sawur Region in West Junggar,Xinjiang

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Acta Geologica Sinica(English Edition) 2007年第2期81卷 322-329页

作者： ZHOU Taofa TAN Lugui FAN Yu YUAN Feng YANG Wenping HE Lixin yue shucang School of Resources and Environmental Engineering Hefei University of Technology Hefei Anhui 230009 No. 4 Geological Party Xinjiang Bureau of Geological Exploration Altay Xinjiang 836500

Acid intrusions are widespread in the Sawur region, Xinjiang. The Ka＇erjiao intrusion is mainly composed of albite granite porphyry, K-feldspar granite porphyry, ivernlte and granite porphyry. Being a transitional product between magma intrusion and eruption in the Sawur region, the Ka＇erjiao intrusion was formed at the telophase of the late Carboniferous to the begining of early Permian as determined by the SHRIMP U-Pb zircon dating, with an age of 302.6±7.6 Ma （1 σ）. The intrusion consists of alkali-enriched rock, whose REE distribution patterns are of the LREE enrichment type, the δEu value is low and Nd, St, Pb isotopes reflect its mantle source characteristics. The δ^18O value of intrusion is low as a result of isotope exchange with meteoric water. The geochemical characteristics show that it was formed in a post-collisional tectonic setting. Taking combined considerations of current studies of A-type granites and Permian volcanic rocks, we think that in the telophase of the late Carboniferous to the beginning of the early Permian, the Sawur region was within the extension or compressional to extensional period of a post-collisionai stage. The Ka＇erjiao intrusion from mantle sources can confirm the vertical continental crust growth in the late Paleozoic. The Sawur region in west Junggar is consistent with east Junggar in post-collisionai tectonic evolution process.

关键词： granite zircon SHRIMP data post-collision Sawur region Xinjiang

MESOZOIC VOLCANIC AND INTRUSIVE ROCKS IN EASTERN GUANGDONG PROVINCE, CHINA:GENESIS, TYPES AND PETROLOGIC IMPLICATION

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Scientia Geologica Sinica 2000年第3期 253-262页

作者： XU Xiaochun, XIE Qiaoqin and yue shucang (Hefei University of Technology, Hefei, 230009)

Mesozoic magmatism formed the volcanic - intrusive complex series with closely genetic relationships in eastern Guangdong province of China. Some of the complexes have transitional characteristics of S-type and I-type, and thus are named S-I type, which show that there was a specially geological and geochemical background when the complex formed. The regional magmatism evolution characteristics shows that this area underwent S-N trending extension, collision and Netrending shear, extension in Mesozoic. The regional complexes are the superposition of Nanling and the Southeast China coast rock provinces. Therefore, this area is a key for us to study the Mesozoic magmatic petrology and deep processes of the Southeast China continent.

关键词： rock TYPES AND PETROLOGIC IMPLICATION CHINA MESOZOIC VOLCANIC AND INTRUSIVE ROCKS IN EASTERN GUANGDONG PROVINCE

SULFUR SOURCES OF THE COPPER-GOLD DEPOSITS IN THE MIDDLE AND LOWER REACHES OF THE YANGTZE RIVER AVER: AN INVESTIGATION FROM THE yueSHAN OREFIELD

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Scientia Geologica Sinica 1999年第1期 31-40页

作者： Zhou Taofa yue shucang( Department of Resources and Environmental Science, Hefei University of Technology, Hefei 230009)

The sulfur sources of the copper-gold deposits in the middle and lower reaches of the Yangtze River area are controversial among experts for the characteristic sulfur isotope compositions of these deposits. The yueshan orefield is taken for example in this paper to elucidate this subject. The δ34S values of the sham-type and the vein-type ores in the yueshan orefield are -11.25-+19.74‰ and +4.2-+8.7‰, respectively. The disequilibria of the sulfur isotope in deposits indicate that the δ34SH2S in the ore-forming fluids were varied, which were caused not by the change of physicochemical conditions but rather by the sulfur isotope compositional variations of the sources and the water-rock interaction. Possible sulfur transformation mechanisms from source into the hydrothermal solutions are discussed, and the results suggest that the sulfur in the sham-type ore deposits was derived from magmas （78%）, pre-Triassic clastic sedimentary rocks, and the Triassic gypsum （salt）-beds hosted in carbonate strata, whereas the sulfur in the vein-type ores came from magmas （79-97%） and gypsum （salt）-beds hosted in carbonate strata. The mixing was caused by water-rock interaction. So the sulfur isotope composition of a copper-gold deposit depended on the evolutional history of the ore-forming hydrothermal fluids, the sulfur may be multi sources, but to most of the copper-gold deposits in the middle and lower reaches of the Yangtze River area, the Triassic gypsum （salt）-beds hosted in carbonate strata may be a more important sulfur source than elastic sedimentary beds in addition to the magmatic （or intrusive） ones, which to some extent is also proved by the close relationships between the marine Triassic evaporate horizon with the deposits in the whole area. The copper-gold deposits are the products of complicated evolution through water-rock interaction between the ore-forming magmatic solution and the sedimentary strata especially the Triassic gypsum（salt）-beds hosted in carbonate st

关键词： SULFUR SOURCES OF THE COPPER-GOLD DEPOSITS IN THE MIDDLE AND LOWER REACHES OF THE YANGTZE RIVER AVER AN INVESTIGATION FROM THE yueSHAN OREFIELD

GEOCHEMICAL CHARACTERISTICS AND METALLOGENY OF THE HUASHUGOU (IRON) COPPER DEPOSIT IN THE NORTH QILIAN MOUNTAINS

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Scientia Geologica Sinica 1999年第3期 301-310页

作者： Zhou Taofa and yue shucang(Department of Resources and Environmental Science, Hefei University of Technology, Hefei 230009,China)

Studies on REE, trace elements, stable isotopes, fluid inclusion and geochronology indicate that theHuashugou (iron) copper deposit was formed in a submarine rift near continental margin. The ore-formingmaterial mainly came from the Proterozoic basic volcanic rocks, sulfur and carbon mainly from theseawater. Following the development of the arc-trough-basin, the Proterozoic volcanic and sedimentarybasement rocks were subjected to the interaction of the deep-circulating hydTothermal system, the oreforming material was leached, transported and finally exhaled into the sea-floor to form the copper-bearingstTata, while the late metamorphism made some of the ore-forming material activated, transpofted andenriched. This deposit is an exhalation-sedimentation and metamorphic (iron) copper deposit.

关键词： ppm GEOCHEMICAL CHARACTERISTICS AND METALLOGENY OF THE HUASHUGOU IRON

40Ar/39Ar DATING OF QUARTZ FROM THE AKTISHKAN GOLD DEPOSIT IN NURT OF NORTHERN ALTAY, XINJIANG AND ITS GEOLOGICAL IMPLICATIONS

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Scientia Geologica Sinica 2000年第1期 1-6页

作者： Zhou Taofa yue shucang and Yuan Feng (Department of Resources and Environmental Science, Hefei University of Technology Hefei 230009)

Quartz from the major ore-forming stage of the Aktishkan gold deposit in the Nurt region of Northern Altay, Xinjiang Autonomous Region, was analyzed by the 4oAr/39Ar fast-neutron activation dating technique, which gave a well-defined plateau age of 138.5±2. lMa and an isochron age of 135.414.2Ma. Combined with other geochronological data and the geological characteristics, it is concluded that there existed a Yanshanian gold metallogenetic epoch in the Northern Altay of Xinjiang, and the Yanshanian may be the principal mineralization period for gold deposits in the Nurt region.

关键词： Ar DATING OF QUARTZ FROM THE AKTISHKAN GOLD DEPOSIT IN NURT OF NORTHERN ALTAY XINJIANG AND ITS GEOLOGICAL IMPLICATIONS Ar ITS

北祁连桦树沟(铁)铜矿床地球化学特征及成因

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地质与勘探 1999年第3期35卷 24-29页

作者：周涛发岳书仓合肥工业大学合肥230009

桦树沟（铁）铜矿床矿石及含矿岩系的稀土元素、微量元素、稳定同位素、流体包裹体以及同位素年代学等地球化学研究表明，铜矿床形成于近大陆边缘的海底裂谷环境，成矿物质主要来自元古代基性火山岩，硫、碳主要来自海水。火山—沉积... 详细信息

桦树沟（铁）铜矿床矿石及含矿岩系的稀土元素、微量元素、稳定同位素、流体包裹体以及同位素年代学等地球化学研究表明，铜矿床形成于近大陆边缘的海底裂谷环境，成矿物质主要来自元古代基性火山岩，硫、碳主要来自海水。火山—沉积岩系经深循环水—热系统的作用，成矿物质被浸出和搬运，并经海底喷溢作用沉淀于海盆洼地中形成含矿层，后期变质作用使成矿物质活化、转移和富集。矿床成因为喷气（流）沉积—变质改造型（

关键词：铁矿床铜矿床地球化学矿床成因

长江中下游铜、金矿床成矿流体系统的形成条件及机理

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北京大学学报（自然科学版） 2000年第5期36卷 697-707页

作者：周涛发岳书仓合肥工业大学资源与环境科学系合肥230009

长江中下游铜、金成矿带是我国最重要的金属成矿带之一。成矿流体系统形成的地球动力学背景及地质地球化学条件对比研究表明 ,赋存于石炭系中的层状铜、金矿床是海西期拉张背景下热卤水沿同生断裂经喷流作用形成的海底喷流 (热水 )沉积... 详细信息

长江中下游铜、金成矿带是我国最重要的金属成矿带之一。成矿流体系统形成的地球动力学背景及地质地球化学条件对比研究表明 ,赋存于石炭系中的层状铜、金矿床是海西期拉张背景下热卤水沿同生断裂经喷流作用形成的海底喷流 (热水 )沉积矿床 ;与燕山期中酸性侵入岩有关的铜、金矿床是在上地幔隆起、张性或向张性过渡背景下形成的 ,是中酸性岩浆经熔体流体分离作用形成的岩浆热液与大气降水混合 ,经水岩作用等复杂的输运和化学反应耦合过程的动力学产物。

关键词：成矿流体系统矿床成因金矿床长江铜矿床

Geodynamic significance of the A-type granites in the Sawuer region in west Junggar, Xinjiang: Rock geochemistry and SHRIMP zircon age evidence

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Science China Earth Sciences 2006年第2期49卷 113-123页

作者： ZHOU Taofa1, YUAN Feng1, TAN Lugui1,2, FAN Yu1 & yue shucang1 1. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China 2. Department of Geography and Environment Science, Wanxi College, Liuan 237012, China School of Resources and Environmental Engineering Hefei University of Technology Hefei China Department of Geography and Environment Science Wanxi College Liuan China

Sawuer region is located in west Junggar, Jimunai County of Altay district and Hefeng County of Tacheng district, Xinjiang. The region is along the north margin of Kazakstan-Junggar plate. The intrusions (mainly acid) are widespread. Qiaqihai and Kuoyitasi intrusions are important in the region, with the characteristics of A-type granite. Further investigations indicate that they belong to A2-type granite that formed in extension tectonic setting of post collision. The REE chon-drite-normalized patterns of the intrusions show LREE enrichment and the δ Eu values are lower. The Nd, Sr, Pb isotope compositions of the intrusions indicate a mantle source, while the low δ 18O values resulted from the isotope exchange between intrusion and meteoric water. According to SHRIMP U-Pb age analysis results, the crystallization age of Qiaqihai intrusion is 290.7 ± 9.3 Ma (1σ ), and that of Kuoyitasi intrusion is 297.9 ± 4.6 Ma (1σ ), corresponding to the beginning of early Permian. The A2-type granites indicate that the region was in the extension period of the post-collisional stage at the beginning of early Permian in the Sawuer region. The A-type granites in the Sawuer region in west Junggar discovered from this work is analogous to the A-type granites found in east Junggar of the Ulungur alkali granites belt. The confirmation of post-collisional A-type granites of early Permian in the Sawuer region provides new evidence for the regional vertical continental crust growth in early Per-mian. The former proposed Ulungur alkali granites belt can extend from east Ulungur through west Ulungur and to Zhaisang in Kazakstan westwards.

关键词： A-type granite, zircon, SHRIMP age, post-collision, Junggar, Xinjiang.

安徽月山矿田成矿流体中铜、金的迁移形式和沉淀的物理化学条件

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岩石学报 2000年第4期16卷 551-558页

作者：周涛发刘晓东袁峰赵勇岳书仓合肥工业大学资源与环境科学系合肥230009

文章基于矿床地质特征和地球化学热力学理论 ,计算和讨论了安徽月山矽卡岩 -热液型铜、金矿田成矿流体中成矿物质的迁移形式和沉淀的物理化学条件。两类矿床的主要成矿阶段 ,成矿流体中铜主要以氯络合物 Cu Cl、Cu Cl2 -、Cu Cl32 - 、C... 详细信息

文章基于矿床地质特征和地球化学热力学理论 ,计算和讨论了安徽月山矽卡岩 -热液型铜、金矿田成矿流体中成矿物质的迁移形式和沉淀的物理化学条件。两类矿床的主要成矿阶段 ,成矿流体中铜主要以氯络合物 Cu Cl、Cu Cl2 -、Cu Cl32 - 、Cu Cl OH,金主要以硫的络合物 Au2 (HS) 2 S2 - 、Au(HS) 2 - 、 Au HS、 Au H3Si O4等形式进行迁移。成矿流体中铜沉淀的主要物化条件是降温及氯离子浓度的下降 ,引起的主要地质作用有冷却作用、流体沸腾作用及流体的混合作用 ;流体中金沉淀的主要物理化学条件是 p H值的降低 (T<30 0℃ )、总硫浓度的减少和氧逸度的降低。

关键词：迁移沉淀成矿流体金矿床铜矿床矿床地质