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瓦子屋埸金锑钨矿床,由当地群众采锑时发现,经武警黄金16支队勘查,确定为金锑钨矿床,并提交了相应的地质报告。该矿床地处白马山岩体北东部,赋存于震旦系江口组、南陀组内,为含矿石英脉型矿床。已发现并评价了三条矿带:Ⅱ号矿带长400m余,宽1.5～5m,走向近东西,倾向北,倾角80°,见金、钨矿化显示;Ⅱ号矿带长600m余,最宽7m,呈北西走向;Ⅰ号矿带与Ⅱ号矿带近于平行,倾向南西,与Ⅲ号矿带相反。经勘查,在Ⅰ、Ⅲ号矿带各圈出1个主矿体,长138～217m,厚0.24～4.54m,金品位达13.21～16.73g/t,锑品位7.33～15.63％,WO_3品位0.184 相似文献
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喀英迪铅锌矿主要产于早石炭世阿克沙克组及其与晚奥陶世呼独克达坂组的接触带上。通过普查工作共圈定15个铅锌矿体。其中主要矿体4个,Ⅰ-4矿体处于晚奥陶世呼独克达坂组灰岩与早石炭世阿克沙克组的不整合接触面上及其两侧,工程控制总长度为523m,最大斜深100m。倾向70°～100°,倾角一般20°～50°,连续性较好。该矿体铅单工程厚0.86～5.64m,平均2.86m,厚度变化系数为70.57%;锌单工程厚0.80～5.64m,平均1.81m,厚度变化系数为93.97%,属于变化较稳定型矿体。铅单工程品位0.62%～16.47%,平均4.53%,品位变化系数114.34%;锌单工程品位0.53%～12.37%,平均3.78%,品位变化系数57.47%。属于有用组分分布较均匀型矿体。通过对矿床地质特征的研究,认为该矿床属沉积岩容矿的、层控的、构造控制非岩浆型低温热液矿床。 相似文献
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《新疆地质》2017,(3)
新疆新源县卡特巴阿苏金铜矿床是那拉提-红柳河缝合带内来发现的特大型岩浆期后热液型金铜矿床。2015—2016年通过勘探圈定金矿体45条,其中规模最大的为Ⅰ_(4-①)号金矿体,控制矿体长2 080 m,平均厚7.99 m,平均品位2.91×10~(-6),估算金资源量45 321.77 kg,占矿床总资源量的50.91%。通过对Ⅰ_(4-①)号矿体特征进行详细论述,为总结矿床总体特征及成因提供依据。通过对Ⅰ_(4-①)号矿体的成矿地质体、结构面及矿化蚀变分析,认为该矿体在深部及走向均有延伸趋势,并在此基础上,圈定3个找矿靶区,为下一步攻深找盲工作提供依据。 相似文献
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多宝山矿田铜山铜矿资源潜力及深部勘查方向 总被引：1，自引：0，他引：1
目前,多宝山矿田铜山铜矿深部勘查尚面临成矿后断层对矿体的切割和错动等问题,该问题严重制约着对该矿床成因的认识及深部勘查方向的选择。铜山断层是破坏铜山铜矿主矿体的主要成矿后断层,其走向为东西向,倾向南,是沿北东10°～12°方向推覆的一条压性断层。研究表明铜山断层由南向北推移的断距在东部1096勘探线为750m,西部1072勘探线断距则为1060m;由于东、西两端推应力的差异性产生东西方向的水平分力,致使断层上盘由西向东水平位移200～250m。铜山Ⅰ、Ⅱ、Ⅲ号主矿体均被铜山断层所切断,其中断层上盘Ⅰ号矿体的部分和Ⅲ号矿体的全部因被抬升已被剥蚀,本文重点讨论Ⅰ、Ⅱ号矿体在断层下盘的赋存部位。分析推测表明,铜山 Ⅰx号矿体在断层下盘赋存在1048～1084线,埋深950m以下;Ⅱx号矿体赋存在断层下盘1036～1104线,埋深1150m。通过对铜山断层下盘推测的Ⅰx、Ⅱx矿体和部分已控制的Ⅲ、Ⅴ（Ⅳ）、Ⅵ号矿体进行资源量预测,铜山铜矿总预测资源量约为铜金属390万t,预测深度为1700m。建议铜山铜矿后期勘查工作重点勘查范围界定在1048线至1096线,勘查深度在900～1700m。 相似文献
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冀北隆化县小罗卜沟中型金银矿床的发现是该地区找矿的重大突破。勘查区位于1∶20万和1∶5万Au、Ag等多元素综合异常内,通过以钻探、硐探为主的探矿工程,基本查明了矿体赋存于早白垩世九佛堂组复成分角砾岩和义县组安山岩及安山质火山角砾岩的构造裂隙内。矿体受断裂带控制,与围岩界线明显,对围岩没有选择性,矿床属燕山期与岩体有关的浅成中低温热液矿床。矿区内共圈定17个矿体,矿体长28～788 m,斜深8～489 m,平均厚度0.80～3.96 m,Ag平均品位68.44×10~(-6)～447.50×10~(-6),共生Au平均品位1.16×10~(-6)～6.25×10~(-6);伴生Au平均品位0.20×10~(-6)～1.00×10~(-6),伴生S平均品位2.34%～11.10%。主要矿体Ⅳ-1银资源储量达中型。矿区内及外围仍存在寻找多金属矿床的潜力。该矿床的发现对寻找同类矿床具有重要指示意义。 相似文献
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简要报道了在云南省南华县发现的大龙潭金矿床的地质特征.大龙潭金矿主矿体长360m,斜深大于60m.矿体形态呈似层状,局部呈透镜状,形态变化中等.矿体厚度的变化系数为71.2%～149.6%,较稳定;Au品位变化系数为87.5%～218%,较均匀;矿体产于向斜两翼,被断层错动,构造影响程度中等.据以上矿床地质特征将该矿区确定为Ⅱ勘查类型. 相似文献
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曲阳金红石矿含矿带长约4km，出露宽度约1km，总体呈东西向展布。矿床受层位控制，赋存于下元古界东焦群豆村组二段含金红石赤铁绢云母石英片岩和赤铁白（绢）云母石英片岩中，共圈定矿体8个，矿体长500m-1700m，平均厚度1m-2m，TiO2平均品位1％～4．02％，矿体产状与围岩一致。矿床形成于古元古代山间盆地相沉积一变质建造中，经历了多次变形变质作用，变质程度达低绿片岩相，为沉积变质矿床。矿床特点与内蒙古羊蹄子山钛矿床相似。目前矿床控制规模为中型，有望成为大型。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献