Late Paleozoic base and precious metal deposits,East Tianshan, Xinjiang, China： Characteristics and geodynamic setting-中国期刊网

摘要 TheEastTianshanisaremoteGobiarealocatedineasternXinjiang,northwesternChina.Inthepastseveralyears,anumberofgold,porphyrycopper,andFe(-Cu)andCu-Ag-Pb-Znskarndepositshavebeendiscoveredthereandareattractingexplorationinterest.TheEastTianshanislocatedbetweentheJunggarblocktothenorthandearlyPaleozoicterranesoftheMiddleTianshantothesouth.ItispartofaHercynianorogenwiththreedistinctE-W-trendingtectonicbelts:theDevonian-EarlyCarboniferousTousuquan-DananhuislandarconthenorthandtheCarboniferousAqishan-Yamansuriftbasintothesouth,whichareseparatedbyrocksoftheKanggurtagshearzone.Theporphyrydeposits,datedat322Ma,arerelatedtothelateevolutionarystagesofasubduction-relatedoceanicorcontinentalmarginarc.Incontrast,theskarn,gold,andmagmaticNi-Cudepositsareassociatedwithpost-colli-sionaltectonicsatca.290-270Ma.TheseLateCarboniferous-EarlyPermiandepositsareassociatedwithlarge-scaleemplacementanderuptionofmagmaspossiblycausedbylithospheredelaminationandriftingwithintheEastTianshan.

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Late Paleozoic base and precious metal deposits,East Tianshan, Xinjiang, China： Characteristics and geodynamic setting

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Late Paleozoic base and precious metal deposits,East Tianshan, Xinjiang, China： Characteristics and geodynamic setting

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