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mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt: Re-Os dating

Science china Earth Sciences 2005年第2期48卷 192-198页

作者： wang denghong, qu wenjun,{2., yin hanlong4 & chen yuchuan institute of mineral resources, Chinese Academy of Geological Sciences, beijing 10003., china National Center of Rock and mineral Analysis, Chinese Academy of Geological Sciences, beijing 10003., china Resource Assessment Center of Yunnan, Kunming 650011, china institute of Geology and Geophysics, Chinese Academy of Sciences, beijing 100101, china Chinese Academy of Geological Sciences, beijing 10003., china 1. institute of mineral {2. Chinese Academy of Geological Sciences 100037 Beijing China 2. National Center of Rock and mineral Analysis Chinese Academy of Geological Sciences 100037 Beijing China 3. Resource Assessment Center of Yunnan 650011 Kunming China 4. institute of Geology and Geophysics Chinese Academy of Sciences 100101 Beijing China 5. Chinese Academy of Geological Sciences 100037 Beijing China

Re-Os isotopic dating for the molybdenites from the porphyry copper deposits of the Jinshajiang-Red River mineralization belt in Yunnan Province yields isochron ages of 33.9±1.1 Ma for the Machangqing deposit and 34.4±0.5 Ma for the Tongchang deposit. This result shows that both the Machangqing and the Tongchang porphyry Cu-Mo deposits from two different ore-fields formed simultaneously. This new data and the published Re-Os model ages of molybdenite (35.4 Ma, 35.9 Ma, 36.2.Ma) of the Yulong porphyry copper deposit in Tibet, which is located in the same Jinshajiang-Red River mineralization belt as the Machangqing deposit and the Tongchang deposit, suggest that these three Cenozoic porphyry copper deposits in the Jinshajiang-Red River mineralization belt were contemporary for their mineralization episode. That is to say, even their present locality is far away and nearly iso-distantly distributed, these three porphyry Cu(Mo) deposits belong to the same mineralization episode at the end of Eocene.

关键词： Re-Os isotopic dating, porphyry Cu deposits, Cenozoic, mineralization episode.

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Three-Dimensional Density Distribution and Seismic Activity along the Guxiang–Tongmai Segment of the Jiali Fault,Tibet

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Acta Geologica Sinica(English Edition) 2024年第2期98卷 454-467页

作者： FAN Pengxiao YU Changqing wang Ruixue ZENG Xiangzhi qu {2. ZHANG Yue institute of Land and resources Engineering Kunming University of Science and Technology Kunming 650000China institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Jiangsu Donghai Continental Deep Hole Crustal Activity National Observation and Research StationLianyungangJiangsu 222000China

The Guxiang-Tongmai segment of the Jiali fault is situated northeast of the Namche Barwa Syntaxis in northeastern *** is one of the most active strike-slip faults near the syntaxis and plays a pivotal role in the examination of seismic activity within the eastern Himalayan *** study in the research region has yielded a 1:2.0000 gravity dataset covering an area 1500 km^(2..Using wavelet transform multiscale decomposition,scratch analysis techni{2.es,and 3D gravity inversion methods,gravity anomalies,fault distributions,and density structures were determined across various *** the integration of our new gravity data with other geophysical and geological information,our findings demonstrate substantial variations in the overall crustal density within the region,with the fault distribution closely linked to these density *** in stratigraphic density are important causes of variations in the capacity of geological formations to endure regional tectonic *** are predominantly concentrated within the density transition zone and are primarily situated in regions of elevated *** hanging wall stress within the Guxiang-Tongmai segment of the Jiali fault exhibits a notable concentration,marked by pronounced anisotropy,and is positioned within the density differential zone,which is prone to earth{2.akes.

关键词： seismicity deep-density structure wavelet transform multi-scale decomposition scratch analysis 3D gravity inversion Jiali fault Tibet

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Artificial Bear Bile:A Novel Approach to Balancing Medical Requirements and Animal Welfare

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Engineering 2024年第7期38卷 100-112页

作者： Yong li Yuhong Huang Nan Feng Heping Zhang Jing qu Shuanggang Ma Yunbao liu Jiang li Shaofeng Xu ling wang Mi Zhang Jie Cai Weiping wang Ru Feng Hang Yu Bo Yu Dailiang liang Heping Qin Suxiang Luo Yanfen li Meifeng li Ruihua wang {12. Ma Yan wang Xiaobo Cen Xiaoxian Xu Boli Zhang Xiaoliang wang Shishan Yu State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China The Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300250China Zhongshan Belling Biotechnology Co. Ltd.Zhongshan 528437China Zhongshan Anshi Biopharmaceutical Co. Ltd.Zhongshan 528437China Westchina-Frontier Pharma Tech Co. Ltd.Chengdu 610041China Tianjin University of Traditional Chinese Medicine Tianjin 301617China

Bear bile has been a valuable and effective medicinal material in traditional Chinese medicine(TCM)for over 13 ***,the current practice of obtaining it through bear farming is under scrutiny for its adverse impact on bear ***,we present a new approach for creating artificial bear bile(ABB)as a high-quality and sustainable alternative to natural bear *** study addresses the scientific challenges of creating bear bile alternatives through interdisciplinary collaborations across various fields,including resources,chemistry,biology,medicine,pharmacology,and TCM.A comprehensive efficacy assessment system that bridges the gap between TCM and modern medical terminology has been established,allowing for the systematic screening of therapeutic *** the utilization of chemical synthesis and enzyme engineering technologies,our research has achieved the environmentally friendly,large-scale production of bear bile therapeutic compounds,as well as the optimization and recomposition of ABB *** resulting ABB not only closely resembles natural bear bile in its composition but also offers advantages such as consistent product quality,availability of raw materials,and independence from threatened or wild *** preclinical efficacy evaluations have demonstrated the equivalence of the therapeutic effects from ABB and those from commercially available drained bear bile(DBB).Furthermore,preclinical toxicological assessment and phase I clinical trials show that the safety of ABB is on par with that of the currently used *** innovative strategy can serve as a new research paradigm for developing alternatives for other endangered TCMs,thereby strengthening the integrity and sustainability of TCM.

关键词： Artificial bear bile Chemical profile Formula optimization Pharmacodynamic consistency Preclinical toxicological assessment

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On Minerogenetic Series: The Third Discussion

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Acta Geologica Sinica(English Edition) 2020年第1期94卷 1-9页

作者： chen yuchuan PEI Rongfu {2. MNR Key Laboratory of Metallogeny and mineral Assessment Chinese Academy of Geological SciencesBeijing 100037China MNR Key Laboratory of Metallogeny and mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

The minerogenetic(or metallogenetic) series of mineral deposits(called minerogenetic series for short) is an academic idea(concept) of studying minerogenetic characteristics in mineral deposit geology. It uses the views of systematology and mobilism to study mineralizing processes and naturally occurring mineral deposit assemblages formed in various stages of geological development in specific tectonic environments. The minerogenetic series is also a natural classification of mineral deposits. There are five hierarchical orders in the classification, with the minerogenetic series as the basic order and the core. The first order includes three categories: minerogenetic series association, minerogenetic series type, and minerogenetic series group. The second is the minerogenetic series, which is decomposed into three orders, i.e. the third, fourth, and fifth orders. The third is the minerogenetic subseries, the fourth is mineral deposit models(types), and the fifth is mineral deposits. Minerogenetic series is comparable to a certain extent metallogenic systems both in the research content and in their own research content. The study of minerogenetic series has both great theoretical significance and practical value for mineral prospecting. However, the study is still in its initial stage and a further study remains to be conducted.

关键词： concept of minerogenetic series order theoretic and practicable significance

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Time Sequence of Himalayan Endogenetic mineralization on the East Side of the Qinghai-Tibet Plateau

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 447-451页

作者： LUO Junlie chen {2. {2. Yunnan Bureau of Geology and mineral Exploration and Development Kunming 650011Yunnan Chinese Academy of Geological Sciences(CAGS) Beijing 100037 3.Institute of Mineral ResourcesCAGSBeijing 100037

Among the endogenetic deposits in the Sanjiang area and at the west margin of the Yangtze platform, Himalayan deposits are the most important and contribute a large proportion of the resources of superlarge deposits. Among the controlled resources of this region, 84% of copper resources, 67% of Pb-Zn, 31% of Ag, 77% of gold and 2.% of tin come from Himalayan deposits on the east side of the Qinghai-Tibet plateau. Himalayan endogenetic mineralization shows a relatively complete sequence evolution in the Sanjiang area and on the west margin of the Yangtze platform. mineralization is manifested by gold deposits related to K-rich lamprophyre, REE deposits related to alkalic complexes and Cu-Au-polymetallic deposits related to alkaline porphyry. Six sequences of mineralization evolution since 65 Ma B.P. in the Sanjiang area and on the west side of the Yangtze platform can be recognized. Himalayan endogenetic mineralization on the east side of the Qinghai-Tibet plateau reached its peak before the Oligocene, corresponding to episodes I and II of the intracontinental orogenic cycle. Afterwards, mineralization waned obviously.

关键词： time sequence Himalayan endogenetic deposits Qinghai-Tibet plateau

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Helium,Argon,and Xenon Isotopic Compositions of Ore-forming Fluids in Jinding-Baiyangping Polymetallic Deposits,Yunnan,Southwest{2.

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 521-528页

作者： XUE Chunji wang denghong chen {2. YANG Jianmin YANG Weiguang institute of mineral {2. Chinese Academy of Geological SciencesBeijing 100037 Chinese Academy of Geological Sciences Beijing 100037 No.3 Geological Party of Yunnan Province Dali 671000

The Jinding superlarge lead and zinc deposit has attracted the attention of geologists of the world and its metallogenesis has long been in dispute. This paper takes the Jinding deposit and the Baiyangping Cu-Ag-Co deposit which was recently found at about 30 km north of Jinding as one ore belt, and, based on researches on the helium, argon, and xenon isotopic compositions of primary inclusions in ore-forming solutions of the main stage, the authors have found that the 3He/4He ratio of the ore-forming fluid is 2.7×10?6 (varying from 0.19 to 1.97 Ra), the 4He/40Ar ratio (0.2.–3.12. is close to the mantle characteristic ratio, and the xenon isotopic composition and evolution show characters of the mantle xenon. The above results reveal the characteristics of mantle source and crust-mantle fluid mixing (mantle helium reaching 32.) and the metallogenic contributions of the deep processes in the Jinding-Baiyangping ore belt.

关键词： Jinding-Baiyangping ore belt fluid inclusion helium argon and xenon isotopes crust-mantle fluids

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Meso-Cenozoic mineralization Pattern in the Continent of china

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 439-446页

作者： chen yuchuan XU Jue {2. YANG Jianmin XUE Chunji YAN Shenhao Chinese Academy of Geological Sciences(CAGS) Beijing 100037 institute of mineral {2. CAGSBeijing 100037

Based on the complex structure and material resources, the complex geological setting of the Mesozoic-Cenozoic continent of china controlled four kinds of dynamic mechanisms of the continental tectonic-{2.ization pattern, i.e. the dynamic mechanisms related to (1) underthrusting or collision, (2. activation of old tectonic belts or activity of new tectonic belts, (3) upwelling of mantle material and heat, and (4) interaction between the atmosphere, hydrosphere, biosphere and lithosphere. The four dynamic factors are related to and interact with each other; and the mantle-crust interaction leads to the regular time-space zonation of endogenetic deposits on a regional scale. The Meso-Cenozoic {2.ization pattern in china can be outlined as the network tectono-metallogenic pattern constructed by NNE- and E-W-trending tectonics in eastern china, and multi-layer ring tectono-metallogenic pattern in the Qinghai-Tibet plateau and its northern and eastern neighbouring areas.

关键词： Meso-Cenozoic mineralization pattern continental mineralization system

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Cenozoic mineralization in china,as a Key to Past mineralization and a Clue to Future Prospecting

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 478-484页

作者： wang denghong chen {2. XU Jue YANG Jianmin XUE Chunji YAN Shenghao institute of mineral {2. Chinese Academy of Geological SciencesBeijing 100037 Chinese Academy of Geological Sciences Beijing 100037

Many Cenozoic metal deposits have been found during the past decade. Among them, the Fuwan Ag deposit in Guangdong is the largest Ag deposit in china. Besides, the largest Cu deposit of china in Yulong, Tibet, the largest Pb-Zn deposit of china in Jinding, Yunnan, and the largest Au deposit of china in Jinguashi, Taiwan, were also formed in the Cenozoic. Why so many important “present” deposits formed during such a short period of geological history is the key problem. The major reason is that different tectonic settings control different kinds of magmatic activity and mineralization at the same time. In southwestern china, porphyry-type Cu deposits such as Yulong were formed during the early stage of the Himalayan orogeny, sediment-hosted Pb-Zn deposits such as Jinding were formed within intermontane basins related to deep faults, and carbonatite-related deposits such as the Maoniuping REE deposit and alkalic magmatic rock-related deposits such as the Beiya Au deposit originated from the mantle source. In southeastern china, the Fuwan Ag deposit was related to continental rifting which was triggered by the mantle plume. In Taiwan, the Jinguashi Au deposit was formed during the subduction process of an oceanic plate beneath a continental plate. Besides, the features such as the diversification, inheritance, large size, deep source of metals and fluids of the Cenozoic (Present or Recent) mineralization can be used as a key to the search for past deposits.

关键词： Cenozoic metallic mineralization minerogenetic series Yulong Cu deposit Jinding Pb-Zn deposit Fuwan Ag deposit Jinguashi Au deposit china

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Isotopic Chronological Study of the Huangsha-Tieshanlong quartz Vein-Type Tungsten Deposit and Timescale of Molybdenum {2.ization in Southern Jiangxi Province,{2.

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Acta Geologica Sinica(English Edition) 2011年第6期85卷 1434-1447页

作者： HUANG Fan FENG chengyou chen {2. yinG lijuan chen Zhenghui1 ZENG Zailin qu wenjun Key Laboratory of Metallogeny and mineral Resource Assessment Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 China Chinese Academy of Geological Sciences Beijing 100037 China Geological Survey Team of South Jiangxi Ganzhou Jiangxi 341000 China National Research Center ofGeoanalysis Beijing 100037 China

The Huangsha-Tieshanlong quartz-vein tungsten polymetal{2.c ore deposit, located in the northern Pangushan-Tieshanlong tungsten ore field in eastern Ganxian-Yudu prospecting areas of the Yushan metallogenic belt, is a well-known tungsten deposit in southern Jiangxi province,{2.. SHRIMP-determined dating of zircons from the Tieshanlong granite yields ages of 168.1±2.1 Ma （n=11, MSWD-1.3）. Rhenium and osmium isotopic dating of molybdenite from the Huangsha quartz-vein tungsten deposit determined by ICP-MS yields a weighted average ages of 153-3 Ma and model ages of 150.2..1 Ma - 155.4-2.3 Ma. The age of the Huangsha tungsten deposit is 10 to 15 Ma later than the Tieshanlong granite, which shows that there might have been another early Late Jurassic magmatic activity between 150 and 160 Ma, a process which is closely related with tungsten mineralization in this area. The Tieshanlong granite, the Hnangsha tungsten deposit and the Pangushan-Tieshanlong ore field were all formed around 150-170 Ma, belonging to products of a Mesozoic second large-scale mineralization. According to the collected molybdenite Re-Os dating results in southern Jiangxi province, the timescale of the associated molybdenum mineralization is 2.6 Ma in the tungsten deposit and the timescale of independent molybdenum mineralization is 1-4 Ma, implying the complexity of tungsten mineralization. Times of molybdenum mineralization are mainly concentrated in the Yanshanian, which includes three stages of 133-135 Ma, 150-162.Ma, and 166-170 Ma, respectively. The 150-162.Ma-stage is in accordance with ages of large-scale WoSn mineralization, which is mainly molybdenum mineralization characterized by associated molybdenum mineralization with development of an even greater-intensity independent molybdenum mineralization. Independent molybdenum mineralization occurred before and after large-scale W-Sn mineralization, which indicates that favorable prospecting period for molybdenum may be in Cretaceous and e

关键词： SHRIMP zircon U-Pb molybdenite Re-Os ages timescale granite quartz vein-type tungsten deposit Huangsha Tieshanlong Jiangxi

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南方主要河流水沙变化及人类活动的影响

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水利水电科技进展 2024年第5期44卷 16-22页

作者：王延贵吴钰川刘焕永陈康中国水利水电科学研究院国际泥沙研究培训中心北京100048 山东省水利勘测设计院有限公司山东济南250013

为了解我国南方河流的水沙变化及主要成因,利用Mann-Kendall检验法和水文量累积曲线法,分析了南方主要河流代表站径流量和输沙量的变化特征,探讨了影响南方河流水沙变化的主要因素。结果表明,长江、珠江、钱塘江和闽江等南方河流代表站... 详细信息

为了解我国南方河流的水沙变化及主要成因,利用Mann-Kendall检验法和水文量累积曲线法,分析了南方主要河流代表站径流量和输沙量的变化特征,探讨了影响南方河流水沙变化的主要因素。结果表明,长江、珠江、钱塘江和闽江等南方河流代表站年径流量都没有显著的变化态势;除钱塘江代表站外年输沙量都有显著减少趋势;钱塘江2.16—2.2.年为平水平沙期,2.11—2.2.年为平水多沙期,其他河流2.16—2.2.年和2.11—2.2.年均为平水少沙期;影响南方河流水沙变化的人类活动包括水库拦沙、水土保持措施、河道采砂、流域过度建设等,其中水库拦沙是南方河流减沙的主要措施,水土保持措施在南方河流减沙过程中发挥了重要作用,河道采砂对河道减沙也发挥了一定的作用。

关键词：南方河流水沙变化水库拦沙水土保持河道采砂

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