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1.
秦岭造山带构造-成矿旋回与演化 总被引：5，自引：0，他引：5
构造与成矿活动是否具有旋回性是地质界长期争论的一个命题。本文根据矿床成矿系列理论和方法,论述了秦岭造山带构造-成矿活动,划分出新太古代-古元古代早期、古元古代晚期、中-新元古代、早古生代、晚古生代和中、新生代6个构造-成矿旋回,探讨了每个旋回的矿床成矿系列特征和成矿演化历史。指出该造山带的成矿作用既有长期性和连续性,也有间断性和旋回性;中、新元古代至早古生代和中、新生代两个时期是秦岭造山带中两个主要的成矿高峰期;构造-成矿作用可分为开裂、拼合及相对稳定三个阶段;成矿作用早期以幔源岩浆侵入及海相火山活动为主,晚期以壳幔混源-壳源的陆相中酸性岩浆侵入及火山活动为主;与火成活动及开裂作用有关的成矿活动在南、北两个成矿域之间具有振荡性演化的特征. 相似文献
2.
秦岭造山带金矿床类型与构造背景 总被引：10，自引：0，他引：10
独具特色的秦岭复合型大陆造山带位于中国南北大陆中央,由古生代盆－岛兼杂的小型陆块及其南北缝合构造带组成,并与华北和扬子大陆碰撞镶嵌,中一新生代陆内造山形成山盆耦合,构成独特的地质构造格局,造成了闻名于世的秦岭成矿带,形成贵金属,有色与黑色金属为特色的丰富矿产资源,根据秦岭造山带的组成与结构,阐述本区造山－成矿作用机制下在不同构造单元中形成的复杂的金矿床类型,分析了秦岭造山带金矿类型产出的地质背景,分布规律及成矿潜力。 相似文献
3.
柴达木周缘金属矿床成因类型、成矿规律与成矿系列 总被引：4，自引：0，他引：4
位处青藏高原东北部、古亚洲构造域与特提斯构造域结合部位的柴达木盆地周缘地区,是一个具有复杂构造演化历史的多旋回复合造山区.同时,该区也是我国重要的、极富潜力的金属成矿带.在综合分析以往多年工作成果基础之上,较系统总结研究了区域成矿地质构造背景、区域构造演化、主要矿床类型、区域成矿规律与成矿系列.结果表明:该区地质构造演化主要经历了前寒武纪古陆形成、早古生代造山、晚古生代—早中生代造山和中新生代叠复造山等4个构造旋回.其中,早古生代和晚古生代—早中生代构造旋回与区内金属成矿关系密切;总结出6个主要矿床成因类型,分属于拉伸裂解构造背景的喷气-沉积矿床组合(包括VMS型、SEDEX型)和与造山过程有关的造山矿床组合(包括斑岩型、矽卡岩型、热液脉型、造山带型金矿等);该区成矿作用具有多期、多矿种和多类型的特点,初步总结划分出5个金属矿床成矿系列,即与新元古代—寒武纪裂解有关的铜多金属矿床成矿系列、与奥陶—志留纪裂解有关的铜钴铅锌多金属矿床成矿系列、与晚加里东陆-陆碰撞有关的金多金属矿床成矿系列、与晚古生代裂解有关的铜多金属矿床成矿系列、与晚华力西—印支期造山有关的铁铜铅锌金多金属矿床成矿系列. 相似文献
4.
内蒙古东部二连浩特-乌兰浩特地区金矿化特征的初步研究 总被引：2，自引：0，他引：2
研究区属含古老地块并经中生代改造的中古生代造山带,存在金、锡等丰度较高的锡林浩特元古宙杂岩、古生代蛇绿岩及板块缝合带、二叠系火山岩、中生代伸展构造背景下的大规模火山-侵入活动及锡多金属成矿作用.本区金矿化类型主要有:韧性剪切带中的石英脉型、蚀变岩型金矿,产于幔源中基性侵入岩中的铜金矿,燕山晚期斑岩型铜金矿,与燕山期次火山岩浆活动有关的脉状铜矿床中的伴生金矿化,微细浸染型金矿化,浅成低温热液型金矿化等.研究区金矿成矿时代可分为242~229Ma、169~161.8Ma、132~159Ma (可能以130~140Ma为主)、127~109.2Ma四个区间.认识到存在印支期成矿、燕山期多阶段成矿等特点对于区内金矿勘查有重要意义.新发现7个矿床(点)的伴生金矿化.毛登、大井等多金属矿床的伴生金矿化具有重要的潜在工业意义. 相似文献
5.
根据构造单元、构造演化及其矿床组合,将秦岭造山带划分为4个成矿集中区:小秦岭古陆活化区、熊耳山裂谷增生区、南秦岭被动陆缘断陷区和碧口地体古拼合带。分别构成4个成矿系列:花岗-绿岩带型金-铁矿床系列、陆相火山岩型金-钼矿床系列、沉积岩型金-铅锌-汞锑矿床系列、海相火山岩型金-银-多金属矿床系列与超基性岩型镍-金矿床系列。矿床系列表现出同生成矿作用和后生叠加改造成矿作用的演化,同生成矿作用与造山带形成早期(古生代及其以前)广泛的地幔羽或热点活动有关,后生成矿作用是在盆山转化和陆内构造-岩浆活动时期(120～340Ma)完成的。 相似文献
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7.
西秦岭地区是中国最重要的金矿矿集区之一,除产出少数夕卡岩型金矿床外,几乎所有的其他金矿床都可归并为造山型、卡林型和类卡林型3种类型。研究表明,西秦岭地区中生代花岗岩主要形成于中晚三叠世,而金矿成矿主要集中在晚三叠世,它们都是华北板块与华南板块碰撞导致的秦岭造山作用的产物。西秦岭地区造山型金矿床主要赋存在泥盆系和石炭系一套复杂的构造变形和区域变质的绿片岩相岩中,主要受北西西向脆韧性剪切带控制,成矿元素组合主要为Au-Ag。矿石中含有大量显微自然金、银金矿,明金可见。成矿流体主要为变质流体。由造山作用引起的强烈构造运动为成矿流体提供了运移通道,为矿质沉淀提供了有利的场所。虽然一些造山型金矿床与中酸性岩体相邻,但矿化与岩浆活动不具直接的成因关系。西秦岭地区卡林型金矿床主要产于轻微变质的寒武系至三叠系沉积岩中,明显受地层、岩性和构造控制。金矿床中的金以超显微金和存在于含砷黄铁矿与毒砂晶格中的固溶体金为主。成矿元素组合为Au-As-Hg-Sb-Ba。成矿流体由早期形成的地层水被后期大气降水补给活化形成,也有部分岩浆水或变质水的加入。在伸展背景下大气降水通过循环演化形成了较浅层次的流体系统,导致Au等成矿元素发生沉淀而形成浸染状矿石。西秦岭地区类卡林型金矿床主要产于浅变质沉积岩建造中,受脆韧性剪切带的控制,并形成于花岗岩岩体附近。与造山型、卡林型金矿床最大的不同之处在于,类卡林型金矿床的形成与同时期的岩浆活动有密切的成因关系。矿石中存在显微自然金,载金矿物主要为黄铁矿、含砷黄铁矿和碲化物。成矿热液主要是岩浆水与变质水、建造水的混合流体。与造山型金矿床类似,流体不混溶导致类卡林型金矿床的形成。 相似文献
8.
苏里南金矿主要位于圭亚那地盾古元古代花岗岩-绿岩带上,沿大型剪切带或断层带分布。通过实地调查、综合研究及结合前人资料的基础上初步认为当地主要有冲洪积型、残坡积型、剪切带(造山)型金矿等类型。剪切带型金矿与剪切构造活动同期或晚于构造变形期,与泛亚马逊造山期后钙碱性火山作用和深成侵入作用同期。根据罗斯贝尔金矿等典型矿床研究,苏里南金矿与圭亚那地盾其它造山型金矿成矿时代相近(2.023~1.955Ga),泛亚马逊主期的构造对金矿起到了导矿和容矿作用,同时提出苏里南金矿的主要找矿方向。 相似文献
9.
CAO Ye LI Shengrong XIONG Xianxiao LI Zhenzhen LIU Xiaobin YAO Meijuan ZHANG Huafeng 《《地质学报》英文版》2012,86(5):1211-1224
The Shihu gold deposit, situated in the Taihang Mesozoic orogen of the North China Craton (NCC), is hosted by ductile-brittle faults within Archean metamorphic core complex. The deposit is characterized by gold-bearing quartz-polymetallic sulfides veins. The Mapeng granitoids stock and intermediate-basic dikes intruded the metamorphic basement rocks, and are spatially related to gold mineralization. Detailed laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS) U-Pb zircon ages of the granitic rocks, dykes and mineralized quartz veins in the studied area reveal its magmatic and mineralized history. The mineralized quartz veins contain inherited zircons with ages of about 2.55 Ga and 1.84 Ga, probably coming from the basement. These two Precambrian events are coeval with those in other parts of the NCC. The Mapeng granitoid stock, the largest intrusion in the area, was emplaced at ca. 130 Ma, and is coeval with magmatic zircon populations from diorites and quartz diorite pophyrites in the same region. The ca. 130 Ma magmatism and gold mineralization were most likely related to an underplating event that took place in the Taihang orogen at Late Mesozoic. The timing of gold mineralization with respect to felsic magmatism in the area is similar to those observed in other major gold-producing provinces in the NCC. This episode is simultaneous with those in the eastern margin of NCC, indicative of a widespread late Yanshanian metallogenic event that was a response to the Early Cretaceous lithosphere in the eastern NCC, in which the mesothermal gold deposits were formed from similar tectono-magmatic environments. 相似文献
10.
智利北部和阿根廷西北部的中新生代斑岩铜矿形成于古生代地体拼贴造山带背景。随着大西洋的张开,南美大陆向西漂移,中新生代期间,南美克拉通块体俯冲到古生代造山带之下形成加厚或双倍地壳。智利北部作为南美活动大陆边缘的组成部分,不断"吞食"向东俯冲的太平洋（纳斯卡）板块,斑岩铜矿成矿作用发生在俯冲板块断离后导致的大规模岩浆活动,并沿再活化岩石圈不连续（先存的古生代拼接带、区域断裂）反复就位,形成安第斯型斑岩铜矿。阿根廷西北部大规模铜（金、钼）成矿与加厚的造山带垮塌有关,大规模成矿受控于造山岩石圈去根、软流圈物质和热上涌引发的大规模岩浆活动。总体而言,智利北部、阿根廷西北部安第斯型和造山带垮塌型斑岩铜矿,乃至南美安第斯山铜（金）矿成矿带形成,与中新生代以来南美大陆向西漂移、大西洋张开事件关系密切。 相似文献
11.
SHAO Shicai 《《地质学报》英文版》2000,74(3):452-457
The formation, development and evolution of the Qinling erogenic belt can be divided into three stages: (1) formation and development of Precambrian basement in the Late Archaean-Palaeoproterozoic (3.0-1.6 Ga), (2) plate evolution (0.8-0.2 Ga), and (3) intracontinental orogeny and tectonic evolution in the Mesozoic.The Devonian (D) and Triassic (T) were the key transition period of the tectonic evolution of the Qinling orogenic belt. That is to say, in the Devonian, the Qinling micro-plate was separated from the northern margin of the Yangtze plate (passive continental margin). This period witnessed transition of the micro-plate from the compressional to ex-tensional state, and consequently three types of sedimentary basins were formed, namely, the rift hydrothermal basin in the micro-plate, restricted ocean basin in the south, and residual ocean basin resulting from collision on the northern margin. In the Triassic the Qinling area was turned into the intracontinental orogen.The Devonian and Triassic w 相似文献
12.
Continental China is a mosaic of numerous tectonic blocks, which amalgamated from Neoarchean to Cenozoic broadly coeval with the cycles of global supercontinents such as Kenorland, Columbia, Rodinia, Gondwana, and Pangaea. By reviewing the long-lasting geological evolution in the different tectonic blocks, it reveals that more than two episodes of tectonic events, including accretionary and collisional orogeny, and dismantling, as well as mantle plume, occurred successively or simultaneously within a single tectonic belt. This is called superimposed orogeny in this study. Examples of the dominant types of superimposed orogeny in China include: (1) Cenozoic continental collision superimposed on Paleo- to Mesozoic accretionary orogeny in the Tibet and Sanjiang orogenic belts; (2) Reactivation of Paleozoic accretionary orogen in later Mesozoic oceanic subduction in the eastern part of Qinling–Qilian–Kunlun and Central Asian orogenic belts; (3) Mesozoic oceanic subduction under the paleo-suture in the South China Block; (4) Mesozoic demantling along the Paleo- and Neoproterozoic, and Paleozoic sutures in the eastern part of North China Craton; and (5) mantle plume rising through metasomatized lithospheric mantle or stagnant oceanic slab in the Emeishan large igneous province. A comprehensive review of the spatial-temporal distribution of ore deposits and their salient features shows that the superimposed orogeny has exerted significant control on metallogeny in China. The giant porphyry and skarnore deposits, as well as orogenic gold deposits were preferentially formed along previous tectonic suture, craton margin, and arc during later orogenesis due to the remobilization of previously enriched metals. Superimposed orogeny has reworked the lithospheric structure with concomitant granitoid-associated metallogeny. The mixing of magmas from juvenile lower crust, ancient lower crust, and middle crust, which tends to induce the different mineralization of Cu–Au, Mo, and Pb–Zn–W–Sn deposits respectively, was considered to generate a wide variety of combinations of metal species. The superimposed orogeny caused the overlapping of diverse genetic types of deposit formed in different tectonic periods in the same tectono-metallogenic belt. The stratiform ore deposit, including BIF, VMS, SEDEX, or sedimentary sulfide layers, formed from Neoarchean to Paleozoic, were modified by later mineralization, resulting in the enrichment of the various metal species and enhancement of ore resources. This study brings up the concept of composite metallogenic system to summarize the regional metallogeny driven by superimposed orogeny. The composite metallogenic system was dominantly characterized by the multi-episodic and diverse mineralization concomitant with one or more features, including mineralization evolved from the previous metal enrichment, later overlapping or modification on previous ore belt, and diversifying of metal species derived from reworked lithosphere. 相似文献
13.
东昆仑祁漫塔格早中生代大陆地壳增生过程中的岩浆活动与成矿作用 总被引：1，自引：0，他引：1
东昆仑祁漫塔格地区位于青藏高原北缘,为典型的大陆边缘增生造山带,经历了漫长的古生代—早中生代增生造山过程,其中以早中生代岩浆活动与成矿作用最为发育。文章系统总结了区内早中生代侵入岩分布及成因,对与其相关矿床地质、成矿流体特征及成矿物质来源进行分析,进一步探讨了祁漫塔格地区早中生代大陆地壳增生过程中的壳幔混合岩浆活动与成矿作用的关联。研究结果认为,中二叠世—早三叠世以俯冲阶段的侧向增生为主,中-晚三叠世以碰撞-后碰撞阶段的垂向增生为主,与成矿有关的岩浆岩主要为中-晚三叠世石英闪长岩、花岗闪长岩、二长花岗岩、正长花岗岩、花岗斑岩等,以I型、A型花岗岩为主,且多见暗色包体,Sr-Nd-Hf同位素组成表明其源于古陆壳物质的重熔,有地幔物质的参与,由地幔底侵古老陆壳,幔源基性岩浆与壳源花岗质岩浆发生不同程度混合作用而形成。与该时期岩浆活动关系密切的主要为斑岩型铜钼矿床、矽卡岩型铁多金属矿床、层控矽卡岩型铅锌矿床、与碱性花岗岩有关稀有金属矿化等。成矿时代集中于248~210 Ma,成矿流体主要来源于岩浆热液,成矿物质具有壳幔混合来源,区内中-晚三叠世大陆垂向增生过程中的壳-幔岩浆混合作用为区域大规模金属成矿提供大量热能、成矿流体及成矿物质。 相似文献
14.
西秦岭楔的构造属性及其增生造山过程 总被引：27，自引：17，他引：10
西秦岭楔是叠置于早古生代造山作用基础上形成的并插入祁连和昆仑早古生代造山带内部的楔形地质体,以大面积出露三叠系并发育多条蛇绿混杂岩带、大型韧性剪切带、中生代火山-岩浆作用和斑岩-矽卡岩型矿床为典型特征,具有增生造山作用的典型特征。这些蛇绿混杂岩带和岛弧钙碱性火山-岩浆岩的形成时代均具有向南逐渐变年轻的空间演化特征,显示了特提斯洋演化过程中海沟具有向南撤退的基本特征。砂岩碎屑组成以及源区特征研究结果表明,西秦岭楔三叠系形成于活动大陆边缘,其碎屑沉积物来自于古特提斯洋北侧的增生杂岩及岛弧。丰富的岛弧钙碱性火山-岩浆岩和沉积组合以及赋存的斑岩-矽卡岩型矿床,均与东昆仑及南秦岭相一致,呈现出相似的岩石组合类型以及岩石地球化学和同位素地球化学特征。这些事实表明,三叠纪时期,东昆仑、西秦岭以及祁连造山带是一个有机整体,自西向东存在一条三叠纪增生岩浆弧。锆石Hf同位素及岩石地球化学成分结果则表明,该增生岩浆弧部分岩浆来自于俯冲增生杂岩的部分熔融。 相似文献
15.
河西走廊成矿带是分布于祁连地区最北部的Ⅲ级成矿单元(全国统一编号为Ⅲ-20), 目前共有235处矿产地, 形成了石油、煤、凹凸棒石黏土、萤石、石膏、芒硝、石灰岩、天然石英砂、铁、铜、金、钨等40余种矿产。该成矿带以沉积成矿作用为主, 其次为流体、岩浆、变质和表生成矿作用, 可分为11种矿床类型, 主要成矿期为华力西期、加里东期、燕山期和喜马拉雅期。河西走廊成矿带可进一步划分为2个成矿亚带, 分别为玉门—民乐成矿亚带和山丹—中卫—泾源成矿亚带。根据构造空间、成矿时间、成矿作用和矿种等四要素的耦合关系, 河西走廊成矿带厘定了10个矿床成矿系列, 包括4个沉积作用有关矿床成矿系列、3个流体作用有关矿床成矿系列、1个岩浆作用有关矿床成矿系列、1个变质作用有关矿床成矿系列和1个表生作用有关矿床成矿系列。通过细分成矿时段和细化成矿地质作用, 进一步解析出16个矿床成矿亚系列, 并建立了47个矿床式。根据区内地质、矿产、物探、化探和遥感信息, 河西走廊成矿带共圈出5个综合预测区, 为下一步找矿工作指出了方向。 相似文献
16.
The Wutai greenstone belt in central North China Craton(NCC) hosts a number of Precambrian gold deposits and ore occurrences. Based on the host rock association, these can be divided into Banded Iron Formation(BIF), meta-volcano-sedimentary and meta-conglomerate types. The two former types formed during ~2.5-2.3 Ga and the third one at ~1.85 Ga. The characteristics of these Precambrian gold deposits are broadly similar with those of the orogenic gold deposits. Based on available geochronological data, here we reconstruct the major tectonic events and their relationship with gold mineralization in the Wutai-Hengshan-Fuping region during Neoarchean to Paleoproterozoic as follows.(1)~2.6-2.5 Ga: widespread intrusion of tonalite-trondhjemite-granodiorite(TTG) magmas in the Hengshan terrane and Fuping continental arc, formation of the Wutai volcanic arc in the southern margin of Hengshan terrane with granitoids emplacement, and the Hengshan-Wutai intra-oceanic arc accretion to the Fuping arc at the end of Neoarchean.(2) ~ 2.5-2.3 Ga: the subduction of Hengshan arc from north leading to persistent magmatism and orogenic gold mineralization.(3)~2.2-2.1 Ga:extension leading to the formation of graben structure in the Wutai and Fuping region, deposition of the Hutuo and Wanzi Group sediments, formation of placer gold through erosion of the orogenic gold deposits.(4)~2.2-2.0 Ga: widespread magmatism in the Wutai-Hengshan-Fuping region.(5)~1.95-1.8 Ga: regional metamorphism associated with collision of the Western and Eastern Blocks of the NCC and associated orogenic gold deposits. The multiple subduction-accretion-collision history and subsequent deep erosion has significantly affected most of the Precambrian gold deposits in the Wutai greenstone belt. 相似文献
17.
Abstract. Jinlongshan gold orebelt is a newly discovered sediment-hosted gold orebelt in Southeastern Qinling Mountains hosted by Late Devonian to Early Carboniferous sedimentary rocks. The location of the belt is regionally controlled by E-W striking Zhenan-Banyan and Ningshan Faults, which were formed during the Indo-Sinian Orogeny. Circular patterns on TM images indicate that intrusive rocks occur at shallow depths in the Jinlongshan orebelt. Two basic types of disseminated and vein-type mineralization have been recognized. Calcareous siltstone is the most favorable host for disseminated mineralization. Vein-type mineralization is mostly hosted by limestone. Locally vein-type mineralization has envelop of disseminated mineralization.
Gold deposits are distributed north and south of the Zhenan-Banyan Fault zone, and the zone is considered to be the feeder zone and pathway for mineralizing fluids. During the Indo-Sinian Orogeny, magmatic and orogenic fluids may have extracted gold and other elements from underlying Proterozoic rocks and Paleozoic sedimentary rocks. The ore solutions evolved continuously with sedimentary rocks until gold was precipitated in appropriate structural sites. Exploration needs to be expanded along the Jinlongshan gold orebelt, focusing on inferred concealed intrusions and calcareous host rocks close to the Zhenan-Banyan Fault. 相似文献
Gold deposits are distributed north and south of the Zhenan-Banyan Fault zone, and the zone is considered to be the feeder zone and pathway for mineralizing fluids. During the Indo-Sinian Orogeny, magmatic and orogenic fluids may have extracted gold and other elements from underlying Proterozoic rocks and Paleozoic sedimentary rocks. The ore solutions evolved continuously with sedimentary rocks until gold was precipitated in appropriate structural sites. Exploration needs to be expanded along the Jinlongshan gold orebelt, focusing on inferred concealed intrusions and calcareous host rocks close to the Zhenan-Banyan Fault. 相似文献
18.
Remnants of a Neoproterozoic Collisional Orogenic Belt in the Core of the Phanerozoic Qinling Orogenic Belt (China) 总被引：12，自引：0，他引：12
NW-SE trending paleotectonics are recognized from the WNW-ESE trending Qinling complex in the core of the Qinling belt. They consist of trending stratum, boundary shear zones, deformed linear plutons and ophiolite. The field relationships and ages of the deformation, magmatism and metamorphism suggest that the paleotectonics formed in Neoproterozoic. The ages of deformed and undeformed plutons approximately constrain the peak deformation during 958-889 Ma. Both the two trending tectonics constitute an orogen-scale tectonic replacement by S2 (Phanerozoic WNW-ESE tectonics) of S1 (NNW-SSE trending Neoproterozoic), similar to structural replacement in outcrop. The strong contractional deformation, (high-pressure) metamorphism, and granitic magmatism that evolved from syn-collisional (S-type), to post-collisional (I-type) and to post-collisional (A-type), as well as regional extension at 885-700 Ma in Qinling, display a cycle of a collisional orogeny. Thus, the NW-SE trending paleotectonics could be remnants of a collisional orogenic belt. The belt originally could trend NNW-SSE, if reworking and modification of Paleozoic and/or Mesozoic NNE-SSW contractional deformation are eliminated. Accordingly, assemblage and breakup of some continental blocks occurred in Neoproterozoic in Qinling, which seems to correspond to assemblage and breakup of Rodinia supercontinent in the world. This study provides new insight into the evolution of the Qinling orogenic belt and the reconstruction of Proterozoic supercontinent of China, and also presents a case study of recognition of an old orogen from a young orogen. 相似文献
19.
小秦岭--熊耳山金成矿作用与区域构造的耦合 总被引：6，自引：0，他引：6
小秦岭-熊耳山地区是重要的金、多金属成矿带，金属元素高度富集，在长不足200km的矿带内，集中产出100多个大中小型金矿床(点)和10余个特大、中、小型钼矿床；成矿金属元素组合既有单一金矿床、铝矿床，也有铝-金-多金属矿床。金的矿床类型有石英脉型、构造蚀变岩型及斑岩．爆破角砾岩型和砂金矿床等。金的成矿流体为临界-超临界地幔流体，成矿物质具深源性。成矿时代主要为中生代，印支期是成矿的开始与先导，燕山期叠加其上，构成一个完整的中生代成矿旋回。金成矿作用受秦岭造山带印支期构造作用的制约，在前沿挤压，后缘滞后拉张的构造耦合作用动力学背景下产出。成矿与岩石圈拆沉作用及地幔流体上涌有关。 相似文献
20.
云南关键矿产重要矿床成矿系列 总被引：1，自引：0，他引：1
云南地处特提斯成矿域与滨太平洋成矿域交汇部位,地质构造复杂,岩浆活动频繁,成矿条件优越。本文将铅、锌、铜、锡、钨、金、银、磷、钛、稀土金属(16种)、稀有金属(9种)和分散元素(8种)列为云南优势关键矿产,总结其资源特征,并针对这些矿产开展矿床成矿系列研究。研究结果显示,全省共可划分出88个矿床成矿系列或亚系列,其中与以上优势关键矿产有关的矿床成矿系列或亚系列有48个,共118个矿床式;以成矿省为单元,华南(陆块)成矿省(云南部分)有8个矿床成矿系列或亚系列,16个矿床式;上扬子(陆块)成矿省(云南部分)有16个矿床成矿系列或亚系列,35个矿床式;三江(造山带)成矿省(云南部分)有19个矿床成矿系列或亚系列,57个矿床式;腾冲(造山带)成矿省有5个矿床成矿系列或亚系列,10个矿床式。按成矿时代,新生代矿床成矿系列或亚系列有16个、中生代12个、古生代12个、前寒武纪5个和跨中生代和新生代3个,成矿强度依次为新生代→中生代→古生代→前寒武纪。 相似文献