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6 个结果
  • 简介:TheGavdNeolithicMiningComplex(GNMC)nearBarcelonawasactiveduringtheNeolithicage,sinceca.6000BPuntilabout700yearsafter.Theseminesshowuptofivedifferentundergroundmininglevels,developedasgalleriesandchambers,communicatedthroughpits,drawingacomplexnetworkwithatotalknownlengthofover1000m.ThesearesomeoftheoldestundergroundminesinEuropebut,contrarytotherestofthemineworkingsknownofthesameepoch,thisistheonlyminingcomplexreportedtodatewhoseaimwasnotminingforconventionalsubstancesfortheepochsuchaschert,ochreorcopper.ThemainaimoftheGNMCwasvariscite,agreenphosphatemineralsimilartoturquoisethatcanbeeasilycutandpolishedtomakeornamentssuchasnecklacesorbracelets.Thispaperisfocusedmainlyonthegeologicalmappingandexaminationinsurfaceandundergroundexposuresofthedifferentphosphatemineralizationtypes(strataboundandveins)andotherrelevantgeologicalfeaturessuchasdiscordances,thrusts,faults,andfolds.

  • 标签: 采矿 地质学 磷铝石矿 新石器时代 巴塞罗那 加太罗利亚
  • 简介:剩余的理论和方程明显的极化方法在这篇文章被建议并且描述。基于存在的矿的研究,剩余明显的极化\Gh\Gasy,从全体的导致水流的中间坡度的明显的极化\Gh\Ga和在已知的深Jiaojia类型金矿上的小电极空格计算,被显示了把矿的效果与在破裂地区从强烈改变的岩石产生的异常极化分开。关键词导致水流中间坡度-剩余明显的极化-深Jiaojia类型金矿-申请第一作者NiuRubao,高级工程师,执行地球物理的调查和研究并且被同意了撤营四次的等级3和等级4科学、工艺的奖金并且出版了大约十篇论文。

  • 标签: 梯度 偏振现象 金矿 地质勘探 矿产资源
  • 简介:Jiaojia-patterngoldminescouldbesurveyedbyutilizinglarge-powerinducedpolarizationsounding.Firstly,amulti-layerednumericalmodelofapolarizationbodywasestablishedinsenseofphysicalandmathematicalderivation.Thepolarizationfieldgeneratedfromthemodelwasthestackofindividualfieldsgeneratedfrommulti-layeredpolarizationunits.Theequationforeliminatingstrongshallowpolarizationanomaliesfromthesoundingdatawasderivedbasedontheprincipleofmultiplyeliminatingthefieldsofindividualpolarizationunits.Asaresult,thedeeppolarizationanomalieswereprominent.Theprocessedsoundingdatawasusedtoquantitativelycalculatethedepthstothetopsofdeepalteredzonesofgoldenmineralization.

  • 标签: 感应探通 极化场 金矿勘探 数学模型 山东