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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,H
2、ebeiZhuozhou072754Abstract:ThemetallogenicconditionsofphosphoriteexistextentivlyinSino-Koreanparaplatformsaswellasthedeep-seatedfaultofbrinkTarimparaplatformandthemiddlezoneofseveralgeosynclinefoldedareassuchasTianshan-Xing’an,Chilien-ChinlingandErerguna.Researchandanalysisshowedthattheendogen
3、esisphosphoritehavebetterprospectingpotentialaswellasthegreenstonebeltphosphoriteandsedimentary&metamorphicphosphoriteinPaleoproterozoicEra,thesedimentaryphosphoriteusuallywithlow-gradeandinsmallscale.4Grade-Bmetallogenicpredictingregions,15Grade-Cmetallogenicbelts,19Grade-Dmetallogenicsubzone
4、sforphosphoritehavebeenmarkedoffinnorthChina.Atthesametime,wesetup2Grade-A,13Grade-Band13Grade-Cmetallogenicpredictingregions,22areashavebeenselectedforfurtherwork.Keywords:NorthPhosphorite,MetallogenicBackground,MetallogenicConditions,MetallogenicPrediction,ResourcePotential.1IntroductionThea
5、reaofsurveyinglieinnorthernChinawhichincludemorethan15provinces,citiesanddistricts(eg.Sinkiang,Qinghai,Gansu,Ningxia,Shanxi,Hebei,Beijing,Tianjin,Shanxi,Liaoning,Jilin,HeilongjiangandMongolia).ThephosphoriteofnorthChinamainlypresentinSino-Koreanparaplatform,Tarimuparaplatform,Tianshan-Xingan,C
6、hilien-ChinlingandEergunafoldarea.Depositswithintheplatformalareamainlypresentattheborderorupliftedzoneofit,andthedepositsinfoldareaareusuallypresentincentralbeltofthearea.Theplatformalphosphatedepositshavelargedistribution,withmoreinnumberaswellasinscaleinfoldedarea.2GeologicalFrameworkTheSin
7、o-KoreanParaplatformistheoldestplatformofChinawithcrystallinebasementmadeuponmetamorphicrocksofArcheanandPaleoproterozoicage.ThecrystallinebasementrockiscappedbyMesoproterozoictoTriassicagesediments.Theplatformalareaischaracterisedbypre
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