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也金嘎波金矿位于冈底斯成矿带上,是对区域化探发现的Au、As多元素组合异常进行追踪发现的,属于热液型金矿床。矿区各类岩石Au、As、Sb、W、Hg、Ag、Bi、Pb元素平均值高于中国丰度值数倍以上,表明矿区具有丰富的物质来源基础。岩石地球化学研究证明,矿床地表发育Au、As、Sb等10多个元素组合异常。其中Au是成矿指示元素,As、Sb、W是密切伴生元素,Bi、Ag、Pb、Hg是一般的伴生元素。多元素组合异常浓度带发育,浓集中心互相套合叠置部位指示金矿(化)体位置。矿体指示元素(Au、As、Sb、W、Hg、Bi、Ag、Pb)异常分布在岩体、地层接触带和构造交汇处,显示金矿与岩浆活动、热液作用和断裂构造相关,属多次构造作用、岩浆热液叠加富集而成。该金矿床处在冈底斯成矿带内,此研究对该成矿带金异常的识别和查证,寻找新的金矿具有借鉴意义。 相似文献
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河南萑香洼金矿原生晕地球化学特征和深部找矿预测 总被引：3，自引：1，他引：3
河南熊耳山地区是豫西重要的金矿化集中区,萑香洼金矿是该成矿带近几年新发现的金矿床.通过运用地球化学成矿指数、聚类分析和因子分析的理论与方法,解析了萑香洼金矿的地球化学场,得出如下主要研究成果:①金矿床F985矿脉呈现以Au、Ag为主,伴有Pb、Zn、Cu、Bi、As、Sb等多元素的综合原生晕;②厘定金矿床的地球化学原生晕的轴向分带、横向分带和纵向分带;③原生晕轴向分带序列:头晕元素组合为As、Sb、Ba,主成矿晕元素组合为Au、Ag、Pb、Zn、Cu、Mo,尾晕元素组合为Co、Ni、Bi;④依据综合原生晕异常套合的特征,优选了4个找矿靶区,对深部隐伏矿体进行定位预测. 相似文献
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高温热田上金矿化的初步研究 总被引：1，自引：0，他引：1
本文首次描述了云南热海热田和西藏羊八井热田上Au、Ag的试验成果,发现热田上方土壤和岩石中Au、Ag有较高的含量,并伴有Hg、As、Sb、Bi、Pb、Tl等元素异常,指出热田上可能有金矿化存在以及热田上找Au是有利的。 相似文献
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《矿产与地质》2019,(6)
伊春市伊东林场金矿床位于小兴安岭—张广才岭岩浆弧,伊春-延寿岩浆弧伊春火山盆地边缘,位于伊春Fe-Pb-Zn-Mo-W-Sn-Cu-Ag成矿亚带的中段。1∶5万水系沉积物Au、Ag、As、Sb元素异常强度较高,规模较大,是金及多金属成矿有利部位。选定了该异常区利用物化探综合方法进行找矿。土壤异常以Au、Ag、As、Sb、Mo元素异常为主,Au、Ag元素异常规模较大、强度较高,伴生Cu、Pb、Zn、Hg元素异常,各元素异常浓集中心套合较好。磁场特征为低磁,电场特征为低阻高极化。经过对物化探异常验证,发现了伊东林场金矿床,说明在伊东林场利用物化探综合方法找矿是成功的。 相似文献
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《矿物岩石地球化学通报》2017,(2)
为探讨甘肃大水金矿深部成矿潜力,在分析矿区成矿地质条件及矿床地质特征的基础上,对大水金矿Au2主矿体开展了构造叠加晕研究。地球化学统计分析表明,大水金矿矿床元素组合为Au、Ag、Hg、As、Sb、W,矿区Au、Sb、Ag、As、Hg、U等元素背景含量较高。矿体轴向特征研究显示,大水金矿床Au2主矿体原生晕轴向分带具有"前、尾晕共存"或"反分带"特征,表明大水金矿具有多期多阶段叠加成矿-成晕的特征。在矿体上部(标高3800m),前、尾晕形成叠加或共存,指示上部矿体已剥蚀;而在矿体尾部(标高3500m),Hg、Te、As、Sb等前缘晕元素又发育内、中带强异常,形成了前、尾晕叠加或共存,指示深部找矿前景较好。 相似文献
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《地质通报》2020,(8)
为了评价早子沟金矿深部找矿潜力和找矿方向,以早子沟金矿61个钻孔为研究对象,对矿体出露较厚大的70勘查线原生晕数据进行多元统计分析和三维空间分布特征研究。研究表明:(1)相关分析和聚类分析结果反映,与主成矿元素Au相关性最密切的元素为As、Ag;(2)原生晕的形态特征和空间分布特征显示,矿体原生晕发育,且分带明显,矿床的前缘晕元素为As、Sb、Hg,近矿晕元素为Au、Ag、Cu、Pb、Zn,尾晕元素为W、Mo、Bi;(3)对原生晕数据进行三维插值分析,构建了早子沟金矿各元素原生晕三维模型。Au、As、Sb、Ag等指示元素和As+Sb/Au+Ag元素异常累加比值的异常模型显示,在2500 m以浅,异常规模较小;在2500 m以深,异常规模呈现出向深部越来越大,且延伸稳定。结合异常元素的空间分布特征,提出早子沟金矿78～85勘查线2000 m以深仍有较大的找矿潜力。 相似文献
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青海拉脊山东段水系沉积物地球化学测量,发现金源、喇嘛庙、七里寺峡Au、As、Ag、Bi、Sb、Hg等元素的水系沉积物组合异常.Au、Ag、As相对高浓度带发育形态、分布范围、异常浓集中心吻合,与区内已知尼旦沟金矿床地球化学异常特征可以类比,发现有金、铜矿体和金矿化,显示铜金成矿的有望远景地段. 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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Inter-regional correlation of transgressions and regressions in the Cretaceous period 总被引：1，自引：0，他引：1
T. Matsumoto 《Cretaceous Research》1980,1(4):359-373
Well investigated platforms have been selected in each continent, and the history of Cretaceous transgressions and regressions there is concisely reviewed from the available evidence. The factual records have been summarized into a diagram and the timing of the events correlated between distant as well as adjoining areas.On a global scale, major transgressions were stepwise enlarged in space and time from the Neocomian, via Aptian-Albian, to the Late Cretaceous, and the post-Cretaceous regression was very remarkable. Minor cycles of transgression-regression were not always synchronous between different areas. Some of them were, however, nearly synchronous between the areas facing the same ocean.Tectono-eustasy may have been the main cause of the phenomena of transgression-regression, but certain kinds of other tectonic movements which affected even the so-called stable platforms were also responsible for the phenomena. The combined effects of various causes may have been unusual in the Cretaceous, since it was a period of global tectonic activity. The slowing down of this activity followed by readjustments may have been the cause of the global regression at the end of the Cretaceous. 相似文献
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The Afyon stratovolcano exhibits lamprophyric rocks, emplaced as hydrovolcanic products, aphanitic lava flows and dyke intrusions, during the final stages of volcanic activity. Most of the Afyon volcanics belong to the silica-saturated alkaline suite, as potassic trachyandesites and trachytes, while the products of the latest activity are lamproitic lamprophyres (jumillite, orendite, verite, fitztroyite) and alkaline lamprophyres (campto-sannaite, sannaite, hyalo-monchiquite, analcime–monchiquite). Afyon lamprophyres exhibit LILE and Zr enrichments, related to mantle metasomatism. 相似文献
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正20140751 Guo Xincheng(Geological Party,BGMRED of Xinjiang,Changji 831100,China);Zheng Yuzhuang Determination and Geological Significance of the Mesoarchean Craton in Western Kunlun Mountains,Xinjiang,China(Geological Review,ISSN0371-5736,CN11-1952/P,59(3),2013,p.401-412,8 相似文献
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正20141058 Chen Ling(Key Laboratory of Mathematical Geology of Sichuan Province,Chengdu University of Technology,Chengdu610059,China);Guo Ke Study of Geochemical Ore-Forming Anomaly Identification Based on the Theory of Blind Source Separation(Geosci- 相似文献
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正20141334 Chen Kun(Institute of Geophysics,China Earthquake Administration,Beijing100081,China);Yu Yanxiang Shakemap of Peak Ground Acceleration with Bias Correction for the Lushan,Sichuan Earthquake on April20,2013(Seismology and Geology,ISSN0253-4967,CN11-2192/P,35(3),2013,p.627-633,2 illus.,1 table,9 refs.)Key words:great earthquakes,Sichuan Province 相似文献
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正20141624 Cai Xiongfei(Key Laboratory of Geobiology and Environmental Geology,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Yang Jie A Restudy of the Upper Sinian Zhengmuguan and Tuerkeng Formations in the Helan Mountains(Journal of Stratigraphy,ISSN0253-4959CN32-1187/P,37(3),2013,p.377-386,5 illus.,2 tables,10 refs.) 相似文献
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正20142263Lü Shaojun(Geological Survey of Jiangxi Province,Nanchang 330030,China)Early-Middle Permian Biostratigraphical Characteristics in Qiangduo Area,Tibet(Resources SurveyEnvironment,ISSN1671-4814,CN32-1640/N,34(4),2013,p.221-227,2illus.,2tables,22refs.)Key words:biostratigraphy,Lower Permian,Middle Permian,Tibet 相似文献
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正20142560Hu Hongxia(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,China);Dai Lixia Application of GIS Map Projection Transformation in Geological Work(Jilin Geology,ISSN1001-2427,CN22-1099/P,32(4),2013,p.160-163,4illus.,2refs.) 相似文献
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正20140692 Duo Tianhui(No.402 Geological Team,Exploration of Geology and Mineral Resources of Sichuan Authority,Chengdu611730,China);Wang Yongli Computer Simulation of Neptunium Existing Forms in the Groundwater(Computing Techniques for Geophysical and Geochemical Exploration,ISSN1001-1749,CN51-1242/P,35(3), 相似文献