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Jiaodong Granitoids and Gold Mineralization

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Journal of Earth Science 1995年第1期14卷 71-78页

作者： Chen Guangyuan Sun Daisheng Shao Yue(Department of geology and Mineral resources, china University of Geosciences, beijing 100083)

Gold Production in Jiaodong started in 598 AD, reached 89.5% of the country's total output in 1078 AD ac is now still on the topmost in china. The Jiaodong Group forming the Neoarchaean crystalline basement belongs to the magnetite tyep consisting in the main of gold-bearing basic to intermediate-acidic matavolcanics. The Mesozoic granitoids generated from partial remelting of the Jiaodong Group consequently belong also to the I-type and magnetite series by showing strong petrochemical, mineralogical and crystallochemical inheritance to the Jiaodong Group .There are three major types of granitoids hosting gold deposits in Jiaodong, namely the Lingong monzonitic grenite (J2 ), the Guojialing granodiorite (J3 )and the Kunyushan monzonitic granite (K1). the isotopic chronological data indicate that there are also three stages of gold mineralization (K1 )corresponding to the formation of the three major types of gramitoids, but the former is not the direct Product of magmatic differentiation from the latter .The Mesozic tectonism and dynamometamorphism on mobile margin of continental Plate Played an important role in both deliverance of gold from source rocks into hydrothermal solution and later deposition from the hydrothermal solution to form gold deposits. Mineraloglcal criteria of redox conditions of granitoids, mineraloglcal, petrochemical and crystallochemical data favorable for gold mineralization in general, and especially in Jiaodong granitoids, are summarized. Difference in gold mineralization in the three major types of Jiaodong grauitoids is also roughly given.

关键词： granitoids gold mineralization,Jiaodong.

Theory of Geological Anomaly in Remote Sensing

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Journal of china University of Geosciences 2001年第2期12卷 108-112页

作者： Chen Jianping Zhao Pengda Ding Huoping The institute of High and New Techniques Applied to land resources, china University of Geosciences, beijing 100083 The institute of High and New Techniques Applied to land resources China University of Geosciences

Geological anomaly is geological body or complex body with obviously different compositions, structures or orders of genesis as compared with those in the surrounding areas. Geological anomaly, restrained by the geological factors closely associated with ore forming process, is an important clue to ore deposits. The geological anomaly serves as a geological sign to locate ore deposits. Therefore, it is very important to study how to define the characteristics of geological anomaly and further to locate the changes in these characteristics. In this paper, the authors propose the geological anomaly based on the remote sensing images and data, and expound systematically such image features as scale, size, boundary, morphology and genesis of geological anomalies. Then the authors introduce the categorization of the geological anomalies according to their geneses. The image characteristics of some types of geological anomalies, such as the underground geological anomaly, are also explained in detail. Based on the remote sensing interpretation of these geological anomalies, the authors conclude that the forecasting and exploration of ore deposits should be focused on the following three aspects: (1) the analysis of geological setting and geological anomaly; (2) the analysis of circular geological anomaly, and (3) the comprehensive forecasting of ore deposits and the research into multi source information.

关键词： geological anomaly remote sensing geology geological field.

Subsidence control and farmland conservation by solid backfilling mining technology

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中国有色金属学会会刊：英文版 2011年第S3期21卷 665-669页

作者： GUO Guang-li1, 2, FENG Wen-kai3, ZHA Jian-feng1, 2, 3, LIU Yuan-xu1, 2, WANG Qiang1, 2 1. Key laboratory for land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china University of Mining and Technology, Xuzhou 221116, china 2. Jiangsu Key laboratory of resources and Environmental Information Engineering, china University of Mining and Technology, Xuzhou 221116, china 3. State Key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, china [a] Key laboratory for land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China [b] Jiangsu Key laboratory of resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China [c] State Key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

Solid backfilling mining technology, which decreases the height of fissure zone and caving zone, and alleviates the subsidence, is a new technology for farmland conservation. Based on the situation analysis of farmland destruction in mining area, three ways for farmland protection were proposed. In order to improve the feasibility of this technology, the limited filling materials should be used to increase resources recovery ratio, and then the surplus materials could be backfilled into goaf. An index, namely farmland conservation ability, was put forward to optimize the ways for farmland conservation. At last, the Wanbei coal mine was taken as a case for farmland conservation. It was shown that 3240 t dull coal was substituted and 52 hm2 farmland was conserved by solid backfilling mining in this coal mine.

关键词： solid backfilling farmland conservation mining subsidence equivalent mining height

Mining subsidence control by solid backfilling under buildings

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中国有色金属学会会刊：英文版 2011年第S3期21卷 670-674页

作者： ZHA Jian-feng1, 2, 3, GUO Guang-li1, 2, FENG Wen-kai3, WANG Qiang1, 2 1. Key laboratory for land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china University of Mining and Technology, Xuzhou 221116, china 2. Jiangsu Key laboratory of resources and Environmental Information Engineering, china University of Mining and Technology, Xuzhou 221116, china 3. State Key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, china [a] Key laboratory for land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China [b] Jiangsu Key laboratory of resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China [c] State Key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

Solid backfilling mining can reduce the buildings' damage caused by mining greatly. The reduction of subsidence value, the slow advancing speed and the subsidence caused by backfilling body compaction are the main reasons that solid backfilling mining velocity decreases significantly. Based on the research of mechanism, some principles on subsidence control of solid backfilling mining under buildings were proposed. The equivalent mining height was designed according to the fortification criteria of buildings and their attachment structures, which enables the ground movement and deformation caused by mining to be less than the corresponding fortification criteria.

关键词： solid backfilling mining subsidence control mining under buildings

Temporal variation of suspended sediment load in the Pearl River due to human activities

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International Journal of Sediment Research 2011年第4期26卷 487-497页

作者： Wei ZHANG,Shousheng MU,Yanjing ZHANG,and Kaimin CHEN 1 Assoc.Prof.,State Key laboratory of Hydrology-Water resources and Hydraulic Engineering,Hohai University, Nanjing,210098,china, 2,4 Graduate student,College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing,210098, china 3 Prof.,china institute of Water resources and Hydropower Research,beijing,100038,china [a] Assoc. Prof. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China [b] Graduate student College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China [c] Prof. China Institute of Water Resources and Hydropower Research Beijing 100038 China [d] Graduate student College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China

Data on sediment flux at three hydrologic stations from the 1950s to 2006 are utilized to study the decadal,annual,and monthly variations in suspended sediment load delivered from the Pearl River to the *** show that variations in sediment flux from three main tributaries,including the West River,the North River and the East River,are spatially *** nearly 90%of the suspended sediment load comes from the West River,its variation has dominated the overall tendency of sediment flux in the entire Pearl *** a significant decreasing trend exists in the annual variation of the total sediment flux,the decadal change can be divided into an increasing phase and a decreasing phase,with the turning point between the two phases in the late *** the 1950s to the 1980s,the average annual river sediment flux increased by 30.43%.However,sediment flux has decreased significantly since the 1990s,with the average sediment flux being 38.60%less in the 2000s than that in the *** current sediment flux is also 52.93%less than its peak in the 1980s. The monthly variation pattern of the suspended sediment load transport to the sea is more interesting. For the West River,all months show a decreasing trend,and for most months the reduction values are ***,for the East River the sediment load shows a decrease trend in the dry season and an increase trend in the wet *** method of regression analysis was used to study the influence of precipitation in the variation on the sediment *** was found that the climate change is not the main driving force behind the variation in suspended sediment *** the 1990s, intensive land use destroyed the vulnerable ecosystem of the upper Pearl River,and speeded up the process of rocky ***,aggravated soil erosion caused an increase in suspended sediment ***,sediment retention within reservoirs had begun to play a dominant role after the massive constru

关键词： Pearl River Sediment flux Human activities Rocky desertification Dam construction

Environmental Implication of Intensive Farming Practices on North china Plain

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Chinese Journal of Population,resources and Environment 2005年第3期3卷 11-20页

作者： Zhen Lin 1, Zhou Hailin 2 & Xie Gaodi 1 1 institute of Geographic Sciences and Natural resources Research, Chinese Academy of Sciences, beijing 100101 , china 2 The Administrative Center for china's Agenda 21, beijing 100089, china institute of Geographic Sciences and Natural resources Research Chinese Academy of Sciences Beijing 100101 China The Administrative Center for china’s Agenda 21 Beijing 100089 China

The current pressure on production resources of North china Plain, such as land and water to feed the growing population, necessitates the assessment of the sustainability of farming practices. This study focuses on the sustainability of farming practices related to groundwater and soil fertility management. The assessment is based on selected site-specific key indicators and their established threshold limits. The current farming practices in the study area are clearly unsustainable. Only about 6% of the surveyed farm households practice sustainable farming. The study stresses that farming practice, which is economically sustainable, should not be promoted at the cost of environment. Holistic strategies need to be developed and implemented that aim at balanced use of inputs, which satisfy both productivity and environmental concerns.

关键词： sustainability indicators threshold values farming practices environmental implication

Suitability evaluation for land reclamation in mining area:A case study of Gaoqiao bauxite mine

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中国有色金属学会会刊：英文版 2011年第S3期21卷 506-515页

作者： WANG Shi-dong1, 2, LIU Chang-hua2, ZHANG He-bing2 1. College of resources Science and Technology, beijing Normal University, beijing 100875, china 2. School of Surveying and land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, china [a] College of resources Science and Technology Beijing Normal University Beijing 100875 China [b] School of Surveying and land Information Engineering Henan Polytechnic University Jiaozuo 454000 China

Suitability evaluation plays an important role in land reclamation because the choice of evaluation methods affects the accuracy and objectivity of the suitability evaluation results. Furthermore, it influences the decision-making related to land reclamation. An improved method, which is called limit comprehensive conditions method, was developed after different suitability evaluation methods were studied. Based on this method, the reclaimed land of the Gaoqiao bauxite mining area was evaluated. The Gaoqiao mining area was divided into seven evaluation units that were evaluated respectively by selecting evaluation factors and establishing grade standards. The results show that the proposed method is more applicable and easier to handle. Moreover, its evaluation results are more scientific compared with the traditional evaluation methods. The improved method can be beneficial to the rapid monitoring and the effective management of reclaimed land in the opencast mine area.

关键词： mining area land reclamation suitability evaluation Gaoqiao bauxite mine

Development Strategy for Marine geology in china

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地质通报 2002年第12期 807-808页

作者： Shou Jiahua (Vice Minister,the ministry of land and resources)

The21st century is an era for marine development ,And oceans are important areas for human society to approach sustainable development .After validity of the Maritime Convention of the United Nations,the oceans has become a new hotspot of global political,economic,military and scientific and technologic competition for safeguarding maritime sovereign rights and mineral *** ocean is a great treasure house of mineral resources for the existence and development of human society,and we must reasonably and scientifically develop and utilize the seas,if we want to realize sustainable development of the marine *** a nation is strong or not depends upon its marine scientific and technologic levels,which can directly decide and affect the safety of the nation.1Historic Responsibility of Marine Geologic Work Marine geologic structure,mineral resources,environmental hazards,and global changes,especially distributions of hydrocarbon and various solid mineral resources and assessments of their reserves,are very important factors that should be considered in national economic constructions,sea area demarcations and defense of state maritime sovereign rights and interests.1.1Defending State Sovereign Rights and Interests In order to safeguard state sovereign rights and interests,it is a must to carryout regional geologic surveys in sea areas under the *** present ,however,the sea areas within china’s jurisdiction,especially in dispute areas,have only seen very low actual explorations,generally15～20years lagging behind the developed *** effective way to change such unfavorable situations is to carry out as soon as possible systematic regional geologic investigations in the sea areas on the scales of 1∶1000000and1∶500000.1.2Investigations of Submarine Mineral resources For the investigation of submarine mineral *** first important thing to do is to make clear the distributions and reserves of various geo -resources,such as littora

关键词： Strategy for Marine geology in china Development

The qanats of Xinjiang:historical development, characteristics and modern implications for environmental protection

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Journal of Arid land 2012年第2期4卷 211-220页

作者： WenJun HU1 ,2,JieBin ZHANG 3,YongQiang LIU 1 1Hohai University,Nanjing 210098,china 2The International Economic&Technical Cooperation and Exchange Center,ministry of Water resources,beijing 100053, china 3 Xinjiang institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,china Chinese Acad Sci Xinjiang Inst Ecol & Geog Urumqi 830011 Peoples R China Hohai Univ Nanjing 210098 Jiangsu Peoples R China Minist Water resources Int Econ & Tech Cooperat & Exchange Ctr Beijing 100053 Peoples R China

In china,qanats(kan’erjing/karez)exist only in Xinjiang Uygur autonomous region,being one form of traditional irrigation technology that made great contributions to oasis *** are different opinions on the origin and date of the qanats in Xinjiang due to a lack of adequate *** uncontrolled over-exploitation of groundwater by pumping wells,as well as the expansion of surface water interventions nowadays,has caused serious impacts on not only the qanats,but also local ecological *** exist long-time arguments on whether the qanats should be restored or *** study aimed to examine the historical development, geological conditions and characteristics,and modern implications of the qanats for oasis environmental protection, and to discuss the initiatives taken by local *** whole Xinjiang Uygur autonomous region was included as the study area,with a specific focus on Turpan *** materials and data were obtained from literature review and governmental *** on a systematic examination of three prevailing theories on the origination of Xinjiang’s qanats,it is suggested modern archaeological techniques could be good solutions to explore the origination in addition to historical records used *** qanats fail to fully meet today’s enormous water demands,their rich historical,cultural,ecological and environmental implications in arid areas should not be *** a cultural heritage and ecologically-friendly engineering creation,qanat systems shall be kept in good condition and function by a valuable *** initiatives to protect and restore target qanat systems in Xinjiang could provide positive examples for the practices in other regions of the world where the protection and restoration of qanats or similar technologies are desired.

关键词： arid areas qanat(kan’erjing/karez) groundwater environmental protection oasis Xinjiang