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新疆阿沙勒金矿地质特征及成因探讨 总被引：2，自引：0，他引：2
阿沙勒金矿产于上奥陶统呼独克达坂组的一套浅海相火山碎屑沉积岩和碳酸盐建造中，是一个与花岗闪长岩体侵入有关的小型金矿床，矿体产出受控于地层、构造、岩浆岩。从矿床地质、流体包裹体、稳定同位素等角度较详细论述了金矿的地质特征，并进一步探讨了矿床成因，认为其属华力西早期的岩浆热液型金矿床。 相似文献
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将内蒙古已知金矿划分为5大类型20个矿床亚类：即重熔岩浆热液金矿、变质热液金矿、沉积变质热液金矿、火山-次火山热液金矿、砂金矿。对各类型金矿床的地质成因特征进行了初步探讨。 相似文献
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将内蒙古已知金矿划分为5大类型20个矿床亚类:即重熔岩浆热液金矿、变质热液金矿、沉积变质热液金矿、火山-次火山热液金矿、砂金矿.对各类型金矿床的地质成因特征进行了初步探讨. 相似文献
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应云南省地质学会矿床专业委员会的邀请,吉林冶金地质勘探公司副总工程师程玉明同志于1984年3月15日在昆明作《中国金矿成因类型、成矿特点及找矿标志》的学术报告。他以我国已知金矿床地质资料为依据,从找矿勘探的实际出发,总结出金矿成因的复成因性、多元性、叠生性、层控性及多旋回性,强调了成矿过程中广义热液作用的特点。他将我国金矿床分为七个成因类型及十八个亚类,每类均有典型矿例并概括了各类的主要特征。七个成因类型是:岩浆热液金矿床,火山——次火山热液金矿床,沉积——变质金矿床,变质——热液金矿 相似文献
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中生代，胶东地区存在燕山期和燕山晚期两期金矿化作用。燕山期金矿化与陆内碰撞（俯冲）的挤压地球动力学环境有关，形成中深石英脉型和蚀变岩型金矿床，以玲珑型和焦家型金矿床为代表，与区域花岗岩浆活动存在时间、空间和成因上的紧密联系。燕山晚期金－多金属矿化与陆内拉张火山裂谷带地球动力学环境有关，形成浅成蚀变岩型（或脉型）金－多金属矿床，以蓬家夼金矿床为代表，与青山期火山－岩浆活动有关。本就两期金矿化的成矿地球动力学环境、矿床地质特征、矿床稳定同位素特征等进行了详细的研究，指出燕山晚期金－多金属矿化作用是胶东地区与燕山期金矿化作用同等重要的成矿阶段。加强燕山晚期金－多金属成矿作用的研究，对于扩大胶东金矿床的找矿远景，保持胶东黄金产业的可持续发展具有十分重要的意义。 相似文献
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香炉子金矿床产于中生代形成的火山隐爆角砾岩体之中，隐爆角砾岩体受ＥＷ向脆－－韧性剪切带所控制，在论述矿床稳定同位素特征，分析成矿物质来源的基础上，结合矿床地质特征和有关地质资料，提出香炉碗子金矿床的形成，是与燕山期岩浆活动有直接联系的古老基底重熔再造的，中低温，浅成火山期后热液型金矿床。 相似文献
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通过对马厂箐斑岩型金矿产出的区域地质背景、矿床特征，控矿条件论述，指出斑岩型金矿床成因和主要找矿标志，并提出沿金沙江－哀牢山深断裂分布的斑岩体群是找斑岩型金矿的主要方向。 相似文献
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云南省新生代浅成侵入斑岩型金矿成矿特征及找矿远景预测──以马厂箐金矿为例 总被引：1，自引：0，他引：1
通过对马厂箐斑岩型金矿产出的区域地质背景、矿床特征、控矿条件论述，指出斑岩型金矿床成因和主要找矿标志，并提出沿金沙江－哀牢山深断裂分布的斑岩体群是找斑岩型金矿的主要方向。 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