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安徽省枞阳县牛头山铜矿床地质特征、矿床成因、找矿标志及找矿方向分析 总被引：1，自引：0，他引：1
通过对矿床的地质特征、矿体赋存规律、矿化蚀变,矿石类型、结构构造,围岩蚀变等分析,初步认为本矿床应与双庙旋回晚期火山、次火山岩有关的中-低温热液充填交代型矿床;初步认为下步找矿方向应继续在龙门院组底部的第一岩性段的矿化蚀变带中沿矿体倾向方向深部和沿走向方向寻找深部矿体. 相似文献
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庐枞盆地为一陆相火山岩盆地，成硫与中—中基性富碱打质火山—次火山岩活动有关，受岩侵型火山隆起、断裂及接触带构造控制，矿体主要产于粗安玢岩顶部及侏罗系上统龙门院组和砖桥组火山岩中，次为前火山岩系碳酸盐岩和钙质碎屑岩中。硫铁矿常与铁、铜、硬石膏等矿产共生或伴生，形成综合型矿床。硅化等热液蚀变与矿化关系密切，为找矿的重要标志。 相似文献
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云南澜沧县南现铜铅矿矿体呈似层状、脉状主要赋存于断层破碎带中,矿体近矿围岩为中侏罗统花开左组(J2h)碎屑岩系。及其。矿床成因属断裂构造控制的热液型铜铅锌多金属矿床。具矿化蚀变的构造破碎带及地球化探异常高值区是重要的找矿标志。 相似文献
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石洞沟金矿位于华北地台北缘的冀东-辽西金多金属成矿带东段,属产于元古宙隆起带内碳酸盐岩中的微细浸染型金矿。据矿体赋存围岩的不同,可分为两种矿石类型:赋存于雾迷山组上部燧石条带白云质灰岩碎裂岩带中的硅质角砾岩型和赋存于铁岭组二段含锰灰岩蚀变破碎带中的破碎蚀变岩型。通过对矿床地质特征的分析,认为矿体产出严格受老马家推覆构造控制,该推覆构造既是导矿构造,又是储矿构造。两种不同类型的金矿化应是该推覆构造所形成的同一成矿系统、同一成矿机制作用的产物。结合矿区地质环境、矿体产出特征与微量元素特征以及矿床成因机制分析,初步认为该矿床成因与深部岩浆或与火山隐爆作用有关,属浅成低温-超低温热液充填型矿床,并具有多期矿化叠加的特征。同时,总结矿体赋存规律,进一步指出该区勘查工作方向,认为该区找矿前景广阔。 相似文献
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红柳沟金矿床属中-低温热液构造破碎蚀变岩型金矿床,目前该矿床已经资源枯竭。为了更好地开展该矿床今后的找矿工作,综合分析了红柳沟金矿床的矿区地质特征、金矿体展布规律及找矿标志;并根据矿体特征、矿石质量、矿石矿物的生成顺序与形成阶段、金的赋存状态及围岩蚀变特征,简要地分析了矿床成因。研究认为,红柳沟金矿床的矿体受SN向的次级断裂构造控制,空间上具有向南侧伏现象,结合化探异常,加强沟南构造破碎蚀变带的深部找矿,将会大幅度提升该矿的远景储量。 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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正1 Introduction Geological studies established on several sections in Lanping-Simao basin have shown that the salt-bearing strata of Mengyejing formation(Yunlong Fm.in Lanping basin)are constituted by an alternation of salt layers and interbedded facies.The latter consists mainly of mudstones,and mudstone-rich conglomerate.The mineralogy and geochemistry of salt-bearing beds and 相似文献
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正On 22nd April 2014,with the approach of the 45th World Earth Day,China’s Ministry of Land and resources issued the status of China’s mineral resources in 2013.The first task of the prospecting breakthrough strategy action implemented in the last five years has been completed,and China’s security capacity for mineral resources has been significantly improved.In the 相似文献
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正There are more than 700 salt lakes with area of more than 1km2 on the Qinghai-Tibet Plateau of China.In recent years,an oilfield brine was also found in the Nanyishan Section of Qaidam Basin in the Qinghai-Tibet 相似文献
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正1 Introduction Physical and numerical models are constructed to investigate the evolution and mechanism of salt migration driven by tectonic processes.In recent years,we have designed and ran series of models to simulate salt 相似文献
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YUAN Qin LI Jianguo QIN Zhanjie WEI Haicheng SHENG Shurong SHAN Fashou 《《地质学报》英文版》2014,88(Z1):276-276
正The study of Cretaceous-Palaeogene salt-bearing strata of the Khorat Basin Laos and the Lanping-Simao Basin in Yunnan,China has an great significance not only in explaining the basin evolution and the genesis of potash 相似文献
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正Potash is one of the long-term scare deposits in China,and potash prospecting has long been listed as a key brainstorm project for our nation and geological prospecting units.There have been considerable studies in search for potash deposits in the Kuqa depression of the Tarim basin(Jackson et al.,1991;Gemmer et al.,2004;Vendeville,2005;Vendeville and Jackson,1992a,1992b), 相似文献
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正1 Introduction Qaidam Basin in Qinghai,including 43 salt lakes with multiple dominant mineral such as potassium,magnesium,lithium etc.,is the most intensive distribution of Saline 相似文献