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1、MetallogenicPredictiononPhosphoriteinNorthChinaXiongXianxiao*作者简介：熊先孝(1961-)，男，博士研究生，教授级高级工程师。主要从事矿床地质研究及矿产资源评价工作。E-mail:xxx@hgdyy.com.cn。LiBboyunYaoChaomei1ResourceandEnvironmentCollege,WuhanScienceandTechnologyUniversity,Wuhan4300702GeologicalInstituteofChina–ChemicalGeologyandMiningBureau,Hebei
2、Zhuozhou072754Abstract:ThemetallogenicconditionsofphosphoriteexistextentivlyinSino-Koreanparaplatformsaswellasthedeep-seatedfaultofbrinkTarimparaplatformandthemiddlezoneofseveralgeosynclinefoldedareassuchasTianshan－Xing’an,Chilien-ChinlingandErerguna.Researchandanalysisshowedthattheendogenesisphos
3、phoritehavebetterprospectingpotentialaswellasthegreenstonebeltphosphoriteandsedimentary&metamorphicphosphoriteinPaleoproterozoicEra,thesedimentaryphosphoriteusuallywithlow-gradeandinsmallscale.4Grade-Bmetallogenicpredictingregions,15Grade-Cmetallogenicbelts,19Grade-Dmetallogenicsubzonesforphosphor
4、itehavebeenmarkedoffinnorthChina.Atthesametime,wesetup2Grade-A,13Grade-Band13Grade-Cmetallogenicpredictingregions,22areashavebeenselectedforfurtherwork.Keywords:NorthPhosphorite,MetallogenicBackground,MetallogenicConditions,MetallogenicPrediction,ResourcePotential.1IntroductionTheareaofsurveyingli
5、einnorthernChinawhichincludemorethan15provinces,citiesanddistricts(eg.Sinkiang,Qinghai,Gansu,Ningxia，Shanxi，Hebei,Beijing,Tianjin,Shanxi,Liaoning,Jilin,HeilongjiangandMongolia).ThephosphoriteofnorthChinamainlypresentinSino-Koreanparaplatform,Tarimuparaplatform,Tianshan-Xingan,Chilien-ChinlingandEe
6、rgunafoldarea.Depositswithintheplatformalareamainlypresentattheborderorupliftedzoneofit,andthedepositsinfoldareaareusuallypresentincentralbeltofthearea.Theplatformalphosphatedepositshavelargedistribution,withmoreinnumberaswellasinscaleinfoldedarea.2GeologicalFrameworkTheSino-KoreanParaplatformisth
7、eoldestplatformofChinawithcrystallinebasementmadeuponmetamorphicrocksofArcheanandPaleoproterozoicage.ThecrystallinebasementrockiscappedbyMesoproterozoictoTriassicagesediments.Theplatformalareaischaracterisedbypre
