共查询到19条相似文献，搜索用时 125 毫秒
1.
JIANG Biao ZHANG Daquan WANG Denghong WANG Chenghui CHEN Yuchuan BAI Ge 《《地质学报》英文版》2015,89(3):1002-1020
China has widely distributed silver deposits,and is rich in silver resources.Although silver deposits are mainly associated with Pb-Zn deposits,a number of independent silver deposits have also been discovered in recent years.Silver deposits include different types,such as submarine volcanism and continental volcanism related type,intrusion related type,and sedimentary related type.This study summarized the metallogenic regularity of China’s silver deposits systematically based mainly on the data from 490 silver deposits.It is shown that submarine volcanic sedimentary type,continental volcanic or sub-volcanic type,skarn type,hydrothermal type(including vein type and stratabound type),sedimentary metamorphic type,sedimentary type and regolith type should be regarded as the most important prediction types of silver deposit.A total of 32 silver mineralization belts and 111 silver concentration areas have been delineated.The map of "Spatial distribution of silver mineralization belts in China" and other series of maps finished in this study may provide a theoretical basis for the evaluation and prognosis of silver resources potential in China. 相似文献
2.
Outline of Uranium Resources Characteristics and Metallogenetic Regularity in China 总被引：16，自引：0，他引：16
CAI Yuqi ZHANG Jindai LI Ziying GUO Qingyin SONG Jiye FAN Honghai LIU Wusheng QI Fucheng ZHANG Minglin 《《地质学报》英文版》2015,89(3):918-937
Uranium,as one of twenty-six kinds of important minerals in China,is strategic resource and energy mineral,which has been thoroughly investigated in the project of National Potential Evaluation of Uranium Resource.During the implementation of this project,the authors summarized the metallogenic regularity of uranium resource in China systematically,through the researches of geological characteristics of uranium resource,uranium deposits type(genetic and prediction type),temporal and spatial distribution,and metallogenic series.Based on the investigation of present situation and progress in uranium exploration,this paper proposes the uranium deposits in China should be divided into 4 classes,9 types,21 subtypes in genetic,and 50 types in prediction;suggests to divide China into 29 uranium metallogenic belts and 20 uranium prospective area,and constructs 20uranium-polymetallic metallogenic series,through summarizing temporal and spatial distribution characteristics and metallogenic regularity of uranium deposits in China.The above research is beneficial to the comprehensive understanding of regional uranium metallogenic regularity,and will direct the uranium exploration in the future. 相似文献
3.
Gold is one of the most important mineral resources in China with its rich mineral resources. In recent years,significant progress has been made on the process of gold resource exploration. Some large and giant gold deposits were newly found and some important expansions in the main mining regions were also been completed. Studies on metallogenic regularity of gold deposits in China also have made achievements with a long–term work. This review aims to conclude the achievements of research on gold metallogenic regularity in China. Based on the data of about 2000 gold deposits and other ore(mineralized) occurrences,gold deposits in China were classified into five prediction types: gold deposits genetically related to granite–greenstone formation,gold deposits related to sedimentary formation(including the Carlin type and the metamorphosed clastic rock related vein gold deposit),gold deposits genetically related to volcanic rocks(including the continental and marine types),gold deposits genetically related to intrusions(including the porphyry type and the inner intrusion and contact zone related gold deposit),gold deposits of supergenesis(including fracture zone–altered rock gold deposit,placer gold deposit,gossan type gold deposit and soil type gold deposit). Statistics on precise chronology data of gold deposits indicate that there occurred 5 main periods of gold–mineralization in geological history of China. They were Neoarchean to Paleoproterozoic,Meso–Neoproterozoic,Paleozoic,Mesozoic,and Cenozoic. Gold deposits in China mainly formed in the Mesozoic and the Cenozoic. On the studies of the spatial–temporal distribution characteristics of gold deposits,53 gold–forming belts were delineated in China. The metallogenic regularity of gold deposits was preliminarily summarized and 71 gold metallogenic series were proposed in China. This suggests that it is necceary to deepen the study on metallogenic regularity of gold deposits and to provide the theory guide for the ore–prospecting for gold resources in China. 相似文献
4.
ZHAO Zheng CUI Xiaolin WANG Denghong CHEN Yuchuan BAI Ge LI Jiankang LIU Xinxing 《《地质学报》英文版》2015,89(5):1747-1761
China has abundant reserves of magnesite, making it the world’s leading source of this strategic mineral. Sparry magnesite is the main type of magnesite deposit, and is easy to exploit. It occurs mainly as the sedimentary-metamorphic type. Production is centred on eastern Liaoning Province, where a world-class large to super large magnesite ore processing and production facility has been developed. Hydrothermal metasomatic deposits, associated with ultramafic complexes and eluvial deposits produced by weathering, are two other important types found in China. The Western section of the Bangonghu-Nujiang metallogenic belt is an important target region for prospecting lake-sedimentary magnesite deposits. Based on a systematic analysis of material from 62 magnesite production areas, this study investigated the metallogeny of magnesite and delineated 13 magnesite metallogenic belts. Maps were produced showing metallogenic regularities in magnesite deposits, the metallogenic system of the magnesite deposits, and the distribution of the metallogenic belts of Chinese magnesite deposits. It provides a theoretical basis for forecasting the location of potential magnesite resources in China. Finally, it explores some key scientific issues, including the formation processes of ultra magnesite ore-concentrated areas, and their sources of magnesium. 相似文献
5.
Hongwei Han He Wang Lunxun Mu Yong Wei Jianhong Zhi Jianhua Yu Mengyuan Wei 《中国地球化学学报》2011,30(4):531-538
The Katelixi Cu-Zn deposit is a marine volcanic rock-type copper deposit discovered for the first time in the Tokuzidaban Group in eastern Kunlun Mountains area. It is hosted in the Lower Carboniferous Tokuzidaban Group volcanic strata. The orebodies are obviously controlled by the strata and their ore-bearing rocks are a suite of greyish-green mafic tuffs, generally parallel-stratiform, stratoid and lenticular in form, occurring in limestone as well as in the contact between limestone and carbon-bearing siltstone. This ore deposit possesses distinct characteristics of marine volcanic rock sedimentaion. The geological, petrochemical and REE characteristics of its occurrence pro-vide strong evidence suggesting that this deposit is of marine volcanic rock sedimention origin, basically identical to those of some typical marine volcanic rock-type copper deposits in Xinjiang and other parts of China. Marine vol-canic rocks are well developed in the Lower Carboniferous Tokuzidaban strata in eastern Kunlun Mountains area. In addition to this deposit, we have also found a number of copper polymetallic ore deposits or occurrences in associa-tion with marine volcanc activities in many places where there is a good metallogenic prospect. A breakthrough in the understanding of ore prospecting and genesis has not only filled up the gap in prospecting this type of ore depos-its in this area, but also is of great significance in directing exploration of this type of ore deposits in this area. 相似文献
6.
CHEN Zhenghui SHENG Jifu LIU Lijun WANG Denghong LIANG Ting WANG Chenghui 《《地质学报》英文版》2015,89(3):1021-1035
China is rich in tin resources,and contains many types of tin deposits.Among the tin deposit types,the cassiterite-sulfide type,skarn type and quartz vein type occupy a large proportion of tin resources and reserves.From the aspect of exploitation and utilization,the most important types are cassiterite-sulfide type and quartz vein type.The cassiterite-sulfide type tin deposits are mainly located in Northern Guangxi and Eastern Yunnan,skarn type deposits are mainly distributed in the ore-concentration areas of South Hunan in Middle Nanling,and the quartz vein type tin deposits are mainly distributed in South China,such as Western Fujian,Middle Jiangxi,Northern Guangzhou and Southern Hunan.The most important metallogenic epoch for tin deposits is the Mesozoic era.The metallogenic geotectonic background is mainly continental environments after orogeny process,with strong tectonic changes,interlaced deep fracture and frequent magmatism.And the most distinctive feature is the well developed Mesozoic granites,which have a close relationship with tin mineralization.Based on the detailed study of the data from 873 tin deposits in China,this paper summarized the metallogenic regularity of tin deposits,classified 20 important metallogenic series of tin or tin-associated deposits,and inferred that the cassiterite-sulfide type,skarn type,quartz vein type and greisen type are the main prediction types of tin resources.Forty-four tin-mineralization belts were divided,among which,19 belts are the most important.In addition,a series of maps about tin metallogenic belts and tin metallogenic regularity were compiled,aiming to provide theoretical basis for potential estimation and prediction of tin mineral resources. 相似文献
7.
TANG Zhongli YAN Haiqing JIAO Jiangang LI Xiaohu 《《地质学报》英文版》2006,80(3):412-419
Many important metal resources, such as Ni （Cu, Co）, PGE, exist in magmatic sulfide deposits, are a hot spot in geological research. We divide the magmatic sulphide deposits in China into four types according to their tectonic setting, intruding mode, ore deposit mode, main metallogenic elements. The four types are as follows： （1） Small-intrusion deposits in paleo-continent; （2） Smallintrusion deposits in continental flood basalt; （3） Small-intrusion deposits in orogenic belt; and （4） The deposits associated with ophiolites. On the basis of the classification, we put forward that the main magmatic metallogenic type in China is small-intrusion metallogeny, and describe its characteristics from small intrusions related concept, three geologic settings, three volcanic-intrusive assemblages and metallogenic key factors. According to the experiences of prospecting at home and abroad, we point out that there is big potential in prospecting small-intrusion deposits, which need further study. At last, we indicate that small-intrusion metallogeny not only widely distributes in mafic-ultramafic intrusions, but also has an important economic value and scientific significance in intermediate-acid intrusions. 相似文献
8.
Sanjiang area in Southwestern China is tectonically sit-uated at the east end of Himalaya-Tethys tectonic do-main and at the conjunction of Tethyan MountainChain and Circum-Pacific Mountain Chain.It is one ofthe key areas to understand the global tectonics and alsoone of gigantic metallogenic provinces in China and evenin the world.Volcanism had occurred during the periodof time from Proterozoic to Cenozoic.The most impor-tant and active periods of volcanism,however,areCarboniferous,Permian and Triassic.The pattern ofspatial distribution of Sanjiang volcanic rocks andophiolites can essentially be described as that severalintra——continental micro-massif volcanic districts arerespectively sandwiched between each two of four couplingophiolite—are volcanic belts,which are successively fromwest to east:Dingqing-Nujiang belt,Laneangjiangbelt,Jinshajiang belt and Ganzi-Litang belt.Fourtectono-magmatic types of volcanic rocks have been recognized in Sanjiang area as follows:mid-ocean-ridge/para-mid-ocean-rid 相似文献
9.
This paper is briefly involved in distributions of China＇s uranium metallogenic types, provinces, regions and belts. Eight target regions have been pointed out to be worthy of prospecting for uranium resources. The regional uranium metallogeny is discussed and great uranium potential pointed out from many aspects. Generally speaking, there are favorable conditions for uranium mineralization and good perspective to explore for uranium resources. 相似文献
10.
Gold Headquarter of the CAPF has discovered the Yangshan super large-scale gold deposit in Gansu Province, which is a great breakthrough of gold exploration and prospecting in Western Qinling Mountains of China. The gold resources of this deposit achieved 308 tons with increasing potentials. Preliminary geological investigations indicate that the Yangshan gold deposit is located in the intra-continental collision orogenic belt; and the deposit was formed during the continent-continent collision orogenic processes. The geological characteristics of the deposit are similar to that of the typical Carlin-type gold deposits, while differences still exist. The ore-forming background is notably different from the Carlin gold deposit province in the United States; and the ore-forming fluids are similar with that of the orogenic-type gold deposit. Accordingly, the Yangshan gold deposit is a transitional type between the Carlin-type and the orogenic type gold deposits. At present, the Yangshan gold deposit is the largest Carlin and Carlin-like type gold deposit that is ever discovered in China. Researches on metallogeny, metallogenic model and ore-enrichment regularities of the Yangshan gold deposit are crucial to meet the pressing needs of the current geological investigation and ore exploration of the deposit. 相似文献
11.
西北地区地处中亚构造域和特提斯构造域的交汇处,中间夹有塔里木克拉通和华北克拉通的西段。地质历史上,两个克拉通及其裂解的微陆块的形成和运动史,基本约束了中国西北部的构造发展历程。围绕克拉通及微陆块的显生宙造山带基本是其周缘增生的结果,由于大陆运移,其他大陆边缘增生的产物,在早三叠世(210 Ma)大陆汇聚中也添加了进来,这些造山带及其陆块边缘的增生是西北各种内生金属矿床的重要形成背景。同时,新元古代、晚古生代陆内与地幔柱有关的大火成岩省的发育,为铜镍等重要矿床的形成提供了条件。此外,在克拉通及其微陆块形成和后期的叠生盆地中,形成了重要的沉积和沉积变质矿床。西北地区近年来重要找矿发现,不断印证了西北克拉通边缘板块构造增生和板内幔源构造岩浆作用成矿的特点,并对传统的地质背景构造认识提出了挑战。这其中,最具经济价值和地质意义的是3个超大型金属矿床的发现:西天山早石炭世阿吾拉勒火山-次火山岩浆喷溢型磁铁矿矿床、东昆仑早泥盆世夏日哈木岩浆深部熔离-贯入型铜镍矿床和西昆仑侏罗—白垩纪火烧云构造热液型铅锌矿床。阿吾拉勒磁铁矿矿床是中国首例火山-次火山岩浆喷溢型磁铁矿矿床,可与智利的拉科超大型典型磁铁矿矿床对比,且更具有经济价值,该矿床的勘查和研究为深入理解中亚造山带天山及其邻区石炭纪裂谷型火山岩浆作用与成矿提供了研究的范例;夏日哈木铜镍矿是中国近年来最重要的铜镍矿发现,探明镍资源量已达百万吨以上,该矿床的发现为查明中国早古生代末期新的岩浆铜镍成矿事件及其找矿潜力提供了研究新区;火烧云铅锌矿床是新近发现的具有超大型资源潜力的铅锌矿床,也是喀喇昆仑—三江造山带中蕴藏的中新生代巨型铅锌成矿带上最重要的成矿发现,为深化研究青藏高原东北缘巨型铅锌成矿带的成矿物质来源和构造控矿机制提供了新的基地。 相似文献
12.
全国火山岩型铀矿资源潜力评价 总被引：7，自引：0，他引：7
火山岩型铀矿床均产于古陆壳之上的酸性（或偏碱性）陆相火山岩系中,文章根据中国陆相火山岩系的产出环境,结合铀矿床、矿点及矿化点的分布,划分出6条火山岩型铀矿成矿带和8条火山岩型铀矿远景带（预测工作区）,对铀矿化集中区进一步划分出21个预测区。根据含矿主岩及控矿构造特征,将火山岩型铀矿床分为5个亚类、16个矿床式（29个典型矿床）,建立了成矿模式,并在此基础上划分出4个预测类型,总结了火山岩型铀矿的成矿要素、预测要素及成矿规律。对14个预测工作区和21个预测区编制了系列图件,圈出了预测工作区靶区近200个,并分别采用数量化理论Ⅰ、品位吨位法、体积法及德尔菲法对各预测工作区和预测区500m以浅及1 000m以浅的铀矿资源量进行了估算。编制了火山岩型铀矿勘查工作部署图,对今后铀矿地质工作及铀矿大基地建设提出建议。 相似文献
13.
富大陆相火山岩型铀矿床的成矿模式 总被引：2，自引：2，他引：0
本文在剖析国内外富大（超大）陆相火山岩型铀矿床产出特征、成矿机理的基础上,建立了富大陆相火山岩型铀矿床的成矿模式：富铀的花岗岩或花岗岩化基底是该类型矿床形成的基础;成矿前多旋回、多阶段的火山喷发是矿床形成的前提;强烈伸展拉张的构造环境是矿床形成的关键[1];成矿后相对圈闭的地质环境是可靠的保矿条件。作者应用这一模式解释了国内外一些富大铀矿床（俄罗斯斯特列措夫超大型铀矿床、蒙古多尔诺特超大型铀矿床、澳大利亚奥林匹克坝Cu－U－AU－REE超大型矿床及中国460和邹家山富大铀矿床）的产出规律,并与661大型贫矿床进行了对比。 相似文献
14.
Spatial distribution and formation conditions of Au-bearing porphyry Cu-Mo deposits in the Northeast of Russia 总被引：1，自引：0，他引：1
By analogy with other metallogenic belts of the Circum-Pacific ring, the metallogenic belts in the Northeast of Russia are promising for discovery of large and superlarge porphyry-type Au-Cu-Mo deposits. The spatial distribution of these deposits is controlled by intrusive domes in Middle Paleozoic, Late Jurassic-Early Cretaceous, and Late Cretaceous volcanic belts. New data on formation conditions and sources of ore matter are presented in this paper with respect to the deposits of the Baim and Koni-P’yagina ore districts of the Oloi and Uda-Murgal metallogenic belts. Some aspects of a geological and genetic model of the porphyry copper ore-magmatic system are discussed. 相似文献
15.
华南相山铀矿田成矿条件及发展前景 总被引：12，自引：0，他引：12
华南中生代陆相火山岩分布广泛，火山活动起始于１７５Ｍａ，结束于７５Ｍａ，早期为高钾钙碱系列、晚期以双峰式火山岩为特征。与火山岩有关的铀矿床不仅数量多、储量大，而且矿化类型也比较复杂，因而引起国内外地质学家的关注。位于华南中生代陆相火山岩带西缘的相山矿田是我国火山岩型铀矿床的典型代表。矿田受区域构造和火山构造联合控制。组成火山盆地盖层的主体岩性为晚侏罗世的碎斑熔岩和流纹英安岩，基底为震旦纪变质岩。与碱交代有关的早期铀矿化分布在盆地的东部，与酸碱交替交代有关的铀、钍矿化分布在盆地西部。矿化垂幅达千米。矿田具有良好的成矿条件。近几年由于基础工作和科研工作的加强，矿田地质勘查取得了令人瞩目的进展，一批新矿床被发现，老矿床不断扩大。其中邹家山矿床已跨入超大型铀矿床的行列，表明相山矿田具有较大的找矿潜力。 相似文献
16.
为了摸清全国金矿资源潜力,科学合理地部署金矿地质勘查工作,在全国金矿资源潜力评价成果的基础上,总结了金矿成矿规律、时空分布及资源潜力特征,跟踪金矿勘查进展,提出金矿勘查部署建议。中国金矿床虽以小型居多,但大中型金矿床的资源储量约占80%。金矿床在中生代呈大规模成矿特征,其矿床数和资源储量均居主要地位,其次为新生代、晚古生代、中新元古代、早古生代。金矿床在空间上呈区域集中分布特征,根据成矿地质背景、成矿条件和金矿床空间分布,结合地球物理、地球化学特征、预测资源量,修订了金矿成矿区带划分方案,确定了57个Ⅲ级金矿成矿区带,其中胶东、小秦岭-伏牛山、滇黔桂、西秦岭、燕辽、松潘-摩天岭、东秦岭、长江中下游、丽江-哀牢山和吉南-辽东成矿区带,其查明资源储量和预测资源量在全国均居前列。以服务于矿产资源潜力评价为目的,提出了金矿预测类型划分方案,将金矿床类型归纳为12类,分别为与中深成侵入岩有关的热液型、微细浸染型、构造破碎蚀变岩型、陆相火山岩型、变质碎屑岩地层中热液型、斑岩型、夕卡岩型、砂金型、花岗绿岩型、海相火山岩型、风化壳型、砾岩型,其中以前5种矿产预测类型为主。在总结金矿床地质背景、地质特征和找矿标志的基础上,建立主要类型金矿预测评价模型。全国金矿资源潜力评价预测金资源量31 125.6 t,预测深度大多小于1 000 m,50%的预测资源量分布于已知矿床外围及深部。根据资源潜力评价成果,结合近年来金矿勘查取得新的找矿进展,找矿主攻矿床类型为中深成侵入岩有关的热液型、微细浸染型、构造破碎蚀变岩型、陆相火山岩型;中国东部胶东、小秦岭-伏牛山、西秦岭、滇黔桂为金矿重点勘查区带,已知矿床深部和外围仍是金矿重点找矿地段;西部地区如东昆仑、巴颜喀拉、冈底斯、班公湖-怒江、丽江-哀牢山等区带的金矿勘查突破,基础性地质勘查和科研工作投入,为西部地区金矿勘查开发提供理论和技术支撑,有利于开创西部地区金矿勘查的新局面。 相似文献
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中国铀矿床通常划为四大类型,即花岗岩型、火山岩型、碳硅泥岩型、砂岩型。本文根据一些火山岩型铀矿的形成环境与火山岩浆活动关系不大,主要受火山岩浆活动之后的中酸性斑岩侵入活动控制的事实,辟出斑岩铀矿类型;斑岩型与花岗岩型、火山岩型铀矿是并列关系。花岗岩型和斑岩型铀矿归为构造控制型铀矿,火山岩型、碳硅泥岩型和砂岩型铀矿归为层位控制型铀矿。中国铀矿在空间分布上,具有成带成片、相对集中、不均衡分布特点,以SN向贺兰山—龙门山—小江断层带为界,可划分为东部滨太平洋铀成矿域、西(北)部古亚洲铀成矿域、西(南)部特提斯铀成矿域。滨太平洋铀成矿域可进一步划分为华南铀矿省、华北铀矿省和东北铀矿省。西(南)部的特提斯铀成矿域,工作程度低,找矿潜力尚待深入研究。西(北)部古欧亚大陆铀成矿域,有西北铀矿省。4大铀矿省内共划分出18个成矿带(区)。以火山岩、斑岩型铀矿为主的成矿带主要分布在我国东部靠近沿海的滨太平洋构造岩浆活动带内,以花岗岩型铀矿为主的成矿带则主要分布在我国中东部多期构造—岩浆活动带内,以碳硅泥岩型铀矿为主的成矿带主要分布在扬子陆块北部和东南部边缘地带和南秦岭地带,以砂岩型铀矿为主的成矿带主要分布在我国北部陆相沉积盆地内。铀成矿带(区)分布的不均匀性,不仅受区域成矿地质背景、保矿条件等因素控制,而且还与当前地质勘查工作程度、经济技术条件有关。 相似文献
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我国寻找大型、超大型铀矿床的找矿方向和有利靶区 总被引：1，自引：3，他引：1
70年代以来,国外通过地质找矿、成矿模式研究、物化探新方法的应用先后发现了一批超大型铀矿床。深入开展与寻找超大型铀矿床有关的地质研究,已引起国际地学界的高度重视。争取在我国发现更多的大型超大型铀矿床是广大铀矿地质工作者的重要任务。本文综合分析了世界超大型铀矿床产出的区域地质背景和地质成矿条件,进行了对比研究,提出我国寻找超大型铀矿床的找矿方向和有利靶区。 相似文献