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中国成矿区（带）的划分 总被引：11，自引：0，他引：11
成矿区（带）是区域成矿学的核心内容。当今以矿床成矿系列理论为中心的区域成矿学新理论的形成标志着地学各分支学科理论的相互融通，从更高层次上深化了区域成矿规律的研究。成矿区（带）的标定并和矿床成矿系列的研究相结合，开拓了区域成矿规律研究的新领域，已经成为当今区域成矿学研究的热点。已知矿床空间分布的集中性和据此提出的矿化集中区概念是圈定各级成矿区（带）的实际依据之一。成矿区（带）内对应的地质构造单元、成矿地质环境的类别和矿床的空间分布特征标志着成矿区（带）内部的物质结构、成矿作用特点和成矿作用的规律性。区域成矿学研究已经表明，成矿物质的巨量富集与成矿地质环境关系密切。从成矿地质环境和产出的矿床成矿系列入手及引入矿床成矿谱系的新概念，有可能揭示成矿区（带）内成矿地质环境的分异变迁对成矿元素巨量富集的控制作用和区域成矿作用的演化过程，深化认识中国多旋回成矿作用的自然规律。 相似文献
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本文在系统总结贵州省最新地质矿产研究成果,进行全省构造单元修订及进一步划分基础上,以多矿种区域成矿条件及区域成矿规律最新认识为依据,对全省三级成矿区带进行了修订,提出了四级及更次级别成矿区带划分方案。贵州省归属于滨（西）太平洋成矿域的扬子成矿省和华南成矿省,进一步划分为4个三级成矿单元、6个四级成矿单元、12个亚四级成矿单元。各级成矿单元的成矿地质条件、控矿因素、成矿作用及其产物各具特色。该划分方案对贵州省成矿规律研究及找矿工作部署具有指导意义。 相似文献
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通过总结广西矿产资源分布现状和规律,在对广西成矿规律和成矿区带研究的基础上,文章总结了区域矿床时空分布规律,划分矿床成矿系列组5个,成矿系列19个、成矿亚系列25个,矿床式229个;按照成矿能力强弱（成矿地质条件优劣及成矿系列组合多少）、成矿信息多少（已知矿床、物、化、遥感信息）,找矿潜力大小为依据,在8个Ⅲ级成矿带基础上,划分出Ⅳ级成矿亚带22个,其中A级11个,B级7个,C级4个;Ⅴ级成矿区82个,其中A级55个;B级19个;C级8个,主要成矿区带矿产资源储量远景可观,找矿潜力很大,为今后勘查部署提供依据,并提出了下一步工作建议。 相似文献
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能源矿产是国家安全和经济发展的战略资源,加强我国及周边地区油气和煤等能源资源的研究和开发利用意义重大。依据板块构造和大陆动力学以及油气与煤成藏地质学理论,以深部构造控制盆—山发育、盆—山耦合和热动力系统控制成矿的研究工作思路,应用70个油气田、471个煤田的基础地质资料,从沉积盆地发育的区域地质特征、成矿地质条件和成矿单元诸多方面,在地理信息系统（GIS）平台上提示了该区板块构造格局与能源资源的时空分布规律。中国南部及邻区能源资源可划分为3个成矿域,每个成矿域又可进一步划分为成矿省、含矿区（盆地）、矿田聚集区带、矿田（油气田）五个级别的成矿区域。数据集由构造带（断裂带和造山带）类型和时代、盆地类型和时代、能源矿产资源类型和丰度、成矿区带等元数据组成。该数据集是在区域大地构造研究的基础上,结合沉积盆地能源矿产（石油、天然气、煤）资源评价资料,综合分析成矿区带特征,利用地理信息系统（GIS）建立的一套完整的数据库,不仅是对中国南部及邻区区域地质认识和沉积盆地能源资源勘查工作成果的集成,而且为国家科学地引导地质找矿工作部署提供理论基础。 相似文献
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The concept of metallogenic province has won general acceptance in economic geology. It is agreed that metallogenic provinces offer good opportunities for exploration of new ore deposits. The concept of geochemical province is also established, but its exact meaning is disputable. In this paper, geochemical province is used as an abnormal spatial distribution of an element or element combination in a particular sample type as measured by a particular analytical technique. The practical consequences of this concept of geochemical provinces in mineral exploration seem not to have been fully utilized, although geochemical and metallogenic provinces could only be different manifestations of the same regional features. The location of geochemical provinces should be of greater importance in exploration than the location of metallogenic provinces, simply because a geochemical province can be identified early in an exploration program, while a metallogenic province cannot be defined until a number of ore discoveries has already been made. We have compared metallogenic provinces with geochemical provinces obtained by regional geochemical mapping in Fennoscandia (mainly data from the Nordkalott Project) and other places such as England, Wales, Germany and Alaska in order to study to what degree large-scale geochemical dispersion patterns can be associated with clusters of economically interesting mineral deposits.It is concluded that metallogenic provinces lie within or coincide with a number of geochemical provinces, some of which may have causal relationships with the ore deposits. It can be assumed that an enormous hierarchy of large and small geochemical provinces exist at the earth's surface. The main features of this system would be detectable by worldwide low-density geochemical mapping. Such mapping should be performed in order to shorten the time lapse between possible rises in the demand of certain raw materials and their supply. Worldwide geochemical mapping would also contribute to a better understanding of major geochemical processes of the Earth and provide baselines for environmental research. 相似文献
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Orogenic gold mineral systems in the Western Lachlan Orogen (Victoria) and the Hodgkinson Province (Queensland) produced gold provinces characterised by vastly different scales of gold endowment and strongly uneven distribution of gold mineralisation within each province. The volume of hydrous pyrite-bearing rocks undergoing metamorphic devolatilisation during thermo-tectonic events driving orogenic gold mineral systems represents a fundamental first-order constraint on the total gold endowment and its broad spatial distribution, both between and within the provinces. Most of the largest gold deposits in both regions occur in linear, richly-endowed metallogenic zones, oblique to the dominant regional structures and related to deep crustal domain boundaries. These boundaries, with only subtle surface expressions, were the major regional structural controls which promoted focused near-vertical flow of mineralising metamorphic fluids above the outer margins of cratonic blocks in the lower crust. Recognised major faults represented only more local scale and often indirect controls on the focused fluid flow, particularly effective above the deep cratonic block boundaries overlain by relatively thick crustal source rocks. 相似文献
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近年来经济的快速发展导致铅锌矿产资源需求大量增加,使得我国的铅锌资源储备形势依然严峻。基于此,在全国开展铅锌矿产资源潜力评价工作,通过总结铅锌矿地质矿产成果,掌握铅锌矿产资源现状,预测未查明的铅锌矿产资源潜力,能够更好地满足未来铅锌矿产资源规划部署及合理利用的需要。在系统梳理全国29个省级行政单位铅锌矿产资源潜力评价成果的基础上,总结中国铅锌矿时空分布规律特征,结合传统的矿床模型以及全国重要矿产预测类型划分方案划分了铅锌矿矿产预测类型,将全国铅锌矿划分为9类矿产预测类型,分别是层控碳酸盐岩型（MVT）、碳酸盐岩细碎屑岩型（SEDEX）、砂砾岩型、沉积改造型、陆相火山岩型、海相火山岩型、岩浆热液型、夕卡岩型和风化壳型;分析了重要成矿区带的铅锌矿矿产预测类型、成矿时代,总结了各成矿区带主要类型铅锌矿区域预测要素,建立了主要类型铅锌矿区域预测模型。结合全国大地构造相图、全国成矿区带图以及全国各级预测区分布图等资料,划分了15个铅锌矿成矿省和47个Ⅲ级成矿区带,以成矿省(成矿区带)为主线开展矿产资源潜力评价和预测工作,为勘查部署提供依据。 相似文献
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Systematic spatial analysis of mineral deposit point patterns can reveal significant spatial properties of mineral systems, with major implications for regional mineral prospectivity modelling. For valid results, a study area needs to be clearly defined, taking into account permissiveness of the geological units for a particular mineral system and effects of cover. Standard statistical tests assuming an isometric contiguous study area with regionally homogeneous distribution of deposits are likely to produce invalid results. Analysis of regional uniformity of spatial deposit density is required for adequate design and interpretation of tests for clustering. Spatial distribution of orogenic gold deposits in the Hodgkinson Province in Queensland and the Western Lachlan Orogen in Victoria (Australia) indicates the presence of significant regional linear metallogenic zones, probably controlled by deep crustal domain boundaries oblique and not related to any recognised major faults. Within the metallogenic zones in both regions, individual gold occurrences are strongly clustered into ore fields, but the distribution of ore fields is random. 相似文献
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东北亚南部地区成矿区带数据集是以研究区最新地学资料为基础,根据区域地质构造特征及成矿特点,综合区内1 590个境内外矿产地信息资料,依据区内主要金属矿床的分布特征、矿床类型、成矿时代及成矿规律,将东北亚南部地区划分为3大成矿域、9个成矿省、43个成矿带及11个成矿亚带。包括成矿省、成矿带及成矿亚带名称,成矿带及成矿亚带的主要成矿元素、主要成矿期、主要构造单元及主要矿产地信息等数据。该数据集将为开展中国与俄罗斯、蒙古国和朝鲜毗邻地区跨境成矿带的成矿对比研究提供基础地质资料,对东北亚南部地区地质找矿工作具有指导意义。 相似文献
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甘肃北山地区是古亚洲成矿域重要的组成部分,包含了两个（即准噶尔成矿省、塔里木成矿省）金、铜、铅、锌、钨、钼、铷、铁等重要成矿省,目前已发现重要矿产地289余处,成矿时段以华力西期为主。本文通过对甘肃北山地区成矿地质背景和成矿在时空上的联系性、矿产预测类型、成矿作用演化的综合研究,简要介绍了Ⅳ级成矿亚带地质矿产特征;重点讨论了区域成矿控制因素;并归纳总结了矿产预测类型,概述了区域成矿的时空演化规律。以期为矿产勘查和地质大调查工作部署提供了新的思路和依据。 相似文献