简介：TwoGSSPs(GlobalStandardStratotypeSectionandPoint)fortheOrdovicianSystemwerededicatedinSwedenon25&26May2003.TheceremonieswerewellorganizedandwellattendedandincludednotonlytheunveilingofformalplaquesdescribingtheGSSPsbutalsothedrivingof“goldenspikes”.

简介：ＢＰ人工神经网络是摸拟人脑机理和功能的一种新型计算机和人工智能技术，它在数据处理中可避免数据分析和建模中的困难，采用拟人化的方法进行处理，特别适用于不确定性和非结构化信息处理，因而对地质学中各种未知信息的预测有着较好的适用性。

简介：ＢＧＨＭＳ：ＡＧｅｏｈｉｓｔｏｒｙＭｏｄｅｌｉｎｇＳｙｓｔｅｍｆｏｒＣｒａｔｏｎｉｃＢａｓｉｎｓＹｅＪｉａｒｅｎ；ＬｕＭｉｎｇｄ；ＷａｎｇＦｅｉｑｉａｏ（ＤｅｐａｒｔｍｅｎｔｏｆＰｅｔｒｏｌｅｕｍＧｅｏｌｏｇｙ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅ...

简介：TheDachangtin-polymetallicorefieldinnorthernGuangxi,China,liesinamid-latePaleozoicriftthatbordersupthesouthernboundaryoftheJiangnan-XuefengMassif.Asagiantoredeposit,itdepositedinmiddleoftheNandang-Hechimetallogeniczone.TheorehostingstrataareoftheDevonion,whichshowstheevidentcharacteristicsofpolymetallicelements,i.e:,Sn,Zn,Pb,Sb,As,Cu,Ag,In,Ge,Cd,etal.,andover1000000ttinreserves.

简介：

简介：

简介：

简介：现有的火成岩分类方案中,存在某些岩类在分类图解上没有空间、岩类因控制参数少,投影重叠以及含有玻璃质导致一些岩石分类错误等问题.提出了以火成岩的SiO2、TiO2、Al2O3、FeO等11个氧化物成分为变量,利用人工神经网络BP网络建立火成岩岩石化学分类模型.研究表明该分类方法是合理的、可行的,取得了良好的判别分类效果,对46个检验样本的判对率达97.8%.

简介：简述BP神经网络的基本原理,通过实例阐述BP神经网络在矿产资源GIS评价应用方法,提出注意事项及如何提高评价应用效果.

简介：1.StructuralAnalysisThroughworkinginDinxinngareaandanalyzingdataongeology,geophrrics,geochemistryandsooeinlowerYangzidiwasystem,aconclusionhasbcendrawnthatthereexistsastructurespotenlofmultilevel,multistngeandmultitypeglidingnappesanddetachmentfaultsbetwccnJiangnangcodomepetemandChangfongRiverinlowc

简介：ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｐａｌｅｏｃｏｎｔｉｎｅｎｔａｌｍａｒｇｉｎｓ，ｃｈａｒａｃｔｅｒｉｚｅｄｂｙａｃｔｉｖｅｉｎ－ｔｅｒａｃｔｉｏｎｂｅｔｗｅｅｎｅａｒｔｈｃｒｕｓｔａｎｄｍａｎｔｌｅ，ｃｏｍｐｌｉｃａｔｅｄｔｅｃｔｏｎ－ｉｃｍｏｖｅｍｅ...

简介：

简介：Accordingtotectono-stratigraphicaldivisionprinciple,differentunitsinKangguertageHuangshancollisionzone,EasternTianshan,aredividedintoorderanddisordertwotypesofstratum-rockassociations,whichbelongtotwokindsofdifferenttectono-volcanicactivitybelts.Thecollisionororenyandductileshearzonehaveastrongspace-timecoupling.Basedontheislandarcbearingvolcanicrockonbothsidesofthecollisionzone,timeofore-formingandrock-forming,characteristicsofcollisiongranit,geochemicalprovince,specialmultistagecollisionorogenyandintracontinentalorogenybasin-formingdevelopedfeatureshavebeenfound.Goldandcopperdeposits,withtherelationtothecollisionorogeny,aredividedintosevengenetictypes.Thetenmetallogeniczonesareclassifiedintotwokindsofore-formingsystemofpaleo-continentalmargin.Metallogenesisofgolddepositscanbeclassifiedintofivestages.Goldandcopperdepositsaredistributedinbeltswiththerelationtothedevelopmentofthecollisionorogeny.Thedistributionofmainlargescalecopperdepositsinthenorthpartofthecollisionzoneandmostlarge-middlescalegolddepositsinthesouthpartofthecollisionzonecandirecttheprospectingforgoldandcopperdeposits.Theactualtargetsareputforward.

简介：Basedonasystematicanalysisaboutthedesignprinciples,systematicobjectives,clients'demandsandfunctionalmodulesoftheregionalkarstdesertificationdisasterinformationsystem,asystematicapplicationplanwasproposedinthispaperthatthemainstreamtechnologieslikeCOMGIS,etc.canbeusedforsecondarydevelopment,andDu'anYaoAutonomousCountyofGuangxiwastakenasanexampletoillustratetheapplicationofgeographicalinformationsystemindevelopmentofkarstdesertificationdisasterinformationsystem,andtoprovideafeasibleplanforrealizationofaccessorydecisioninformationaimingforsustainabledevelopmentofkarstdesertificationarea.

简介：微生物引起的分子的生态学技术，它被开发根据分子，在在构造快速的渗入(CRI)学习细菌被使用系统。这些技术在更好在CRI通过微生物引起的nucleic酸顺序碎片的分析描述在微生物引起的组结构和氮污染之间的细菌的差异，微生物引起的社区分发，和关系是很有效的。结果进一步揭示了污染的移动机制，它为在CRI的废水处理的改进是必要的。

简介：Theexpertsystemforstatisticalpredictionofmineraldepositsonmiddleandlargescalestakesthesystemofscientificexplorationtheories,criteriaandmethodsproposedbyProfessorZhaoPengdaasthefieldexpertknowledge.Atpresentthedevelopedsystemfocusesontwoaspects:syntheticexplorationandquantitativeexploration.Amongthethreebasictheoriesforthepredictionofdeposits,ithighlightstheapplicationsofseekinganomalytheory.Thissystemischaracteristicinthedeterminationofgeologicalbackground,thestudyofgeologicalanomaliesandthedelineationofgeologicalbackground,thestudyofgeologicalanomaliesandthedelineationofmineralizationanomalies.Thesystemcombinescloselytheknowledgebase,methodbaseanddatabase,integratestheinputandoutputinformationofmulti-sourcesandmulti-variables,data,graphsandimagineprocessingsystemandinquiringsystemasawhole.Sothesystemcanmeetingeneralallkindsofdemandsinstatisticalpredictionofm

简介：

简介：Rehai，位于云南省的Tengchong暴烈的地热的区域的南部的部分的一个高温度的热水的系统，被集中的热水的活动描绘。在到目前为止被取样了的Rehai的温泉是Na-HCO<潜水艇class=“a-plus-plus”>3-Cl或Na-HCO<潜水艇class=“a-plus-plus”>3在Diretiyanqu除了那跳(经历地热的区域)它是一个酸硫酸盐弹簧。在有岩浆的高温度的热水的系统的同样典型的典型解决方案成分作为热采购原料，Cl，B并且作为在Rehai，地热的水主要从magmatic液体的增加发源。然而，两magmatic液体和水库hostrocks的溶解混合在Rehai地热的水里贡献氟化物的丰富，尽管他们的氟化物集中被由在答案氟化物和钙集中之间的一种清楚的否定关系显示了的荧石的溶解度首先控制。高得多的集中那么<潜水艇class=“a-plus-plus”>4<啜class=“a-plus-plus”>在Diretiyanqu春天的2作为与在Rehai的另外的弹簧outcropping相比暗示相当不同的geochemical开始这个弹簧。H<潜水艇class=“a-plus-plus”>2S富有的蒸汽，在煮过程期间与深地热的液体分开了(即，断热的冷却)，能上升到它与冷地下水被混合并且氧化的浅含水土层。尽管仅仅这种类型的一个弹簧在这研究的领域调查期间被取样了，充满硫酸盐的温泉通常是的酸在这形成了举止。

简介：1.ObjectivesAsabout99%ofthenaturalgashydrate(NGH)resourcesarestoredontheseafloor,itisinevitablethatinitsprocessofexplorationandproduction,therewillbegeohazardssuchasmethaneleakage,seabedsubsidence,ecosystemdamageandevenlandslide.Therefore,asetofintegratedsystemsforenvironmentalmonitoringintheprocessofNGHproductionhasbeenproposedintheconsiderationofenvironmentaldisastersthatmayariseintheprocessofhydrateproduction.

简介：