共查询到20条相似文献，搜索用时 46 毫秒
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广东莲花山断裂带是广东省内已知的最重要的锡、铜多金属成矿带。其南西段是莲花山国家级锡铜多金属整装勘查区,区内共分布有北山嶂—九龙嶂、棉洋—双华、五指嶂—锅子嶂、梅陇—鲘门—观音山4个动力变质带,动力变质带是本区内重要含矿及控矿构造。本文在野外地质调查、构造专项地质填图的基础上,通过对新发现的具有大型找矿前景的金坑铜锡多金属矿床的解剖,从矿区宏观地质特征、矿床的成矿温度、压力、成矿物质来源及成矿年龄等方面进行分析,认为矿床的成矿物质来源于侏罗纪火山岩;矿床的成矿作用主要与动力变质作用密切相关,为动力变质热液改造矿床;由此推测广泛分布于4个动力变质带中的诸多中、小型锡铜多金属矿床、地表矿化带（点）和化探异常的深部具有重要找矿潜力,具有大型矿床找矿前景。通过对本区的进一步工作,广东莲花山断裂带有望成为华南地区乃至全国重要的锡铜多金属成矿带。 相似文献
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湘黔金矿带呈北东—南西向。北东起于洞庭湖,南西至天柱—榕江一带。带内基底为浅变质岩系,盖层为碳酸盐岩及碎屑岩。发育有区域性深大断裂.断隆区浅变质岩广布,断坳区盖层发育。不同级次的构造,分别控制含矿带、矿化密集区、矿床及矿体的产出。北东—南西向深大断裂带控制着金矿带的产出。俯冲带和深大断裂带相交区,控制矿化密集区的产出.次级北东—南西向断裂带和同方向次级褶皱与北西向断裂交会区控制着矿床、矿点的产出。矿体则受层间剥离构造、小背斜及挠曲、节理群发育的控制。 相似文献
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黔西北矿集区亮岩铅锌矿区成矿构造解析 总被引：3，自引：3，他引：0
亮岩铅锌矿是川滇黔接壤区黔西北铅锌矿集区的典型矿床之一。基于矿田地质力学理论与方法,通过对该矿床三个中段出露的垭都—蟒硐断裂带结构进行精细解析,综合矿床地质特征和区域构造分析,认为该区至少历经了三期构造成生发展过程,相应的主压应力方向依次变化为北西向→北东向→东西向,其中在成矿期主要受北西—南东向挤压作用,为北东构造带。因该断裂带走向变化,在其不同部位的力学性质相应发生改变,导致矿体赋存特征存在明显差异。结合黔西北矿集区内其它典型矿床控矿构造的对比研究,发现这些矿床具有相似的构造控矿规律,而且与滇东北矿集区会泽型（HZT）铅锌矿均受到统一的构造应力场控制。不同于垭都—蟒硐成矿带在成矿期受北西构造带构造体系控制的传统观点,该新认识认为燕山期北东—西南向挤压作用所形成的北西构造带构造体系为成矿后构造（破矿构造）。这些认识为该区乃至黔西北矿集区深部找矿预测提供了重要启示。 相似文献
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湘黔汞矿带旋扭构造动力作用与成矿规律 总被引：1，自引：0，他引：1
湘西黔东地区,在古生代沉积盖层中,北北东向保靖-铜仁断裂带的东侧,发育一系列北东向平移逆冲压扭性断裂构造带,它们均具有相似的变形特征和动力学机制,构成一个大型压扭性旋扭构造系统。旋扭构造控制了湘黔汞矿带的分布,其中北东向断裂带控制了汞矿带内各矿田的展布,而由北东向断裂带所派生的次级张扭性断裂裂隙带,则控制了单个矿体或矿床的产出和定位,特大型和大型汞矿床均产于旋扭构造的应力强区内。 相似文献
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内蒙满州里—新巴尔虎右旗成矿带银的成矿规律 总被引：3，自引：0，他引：3
孙恩守 《有色金属矿产与勘查》1995,4(1):23-29
满洲里－新巴尔虎右旗成矿带是额尔古纳成矿带的一部分，北东向额尔古纳－呼伦深断裂带控制了全区，满洲里－新巴尔虎右旗为一中生代火山隆地区，与北东向深水断裂带斜交的次级北西、北西西向构造将全区分割成四个成矿亚带、构造控矿非常明显。本文通过对全区矿床，矿点，矿化区的构造分析，总结其成矿规律，指出了找矿方向，扩大了找矿领域。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
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正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献
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正20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology Quaternary Geology,ISSN0256-1492,CN37 相似文献
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正20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.) 相似文献