简介：Tenrepresentativelimestonesamples[sixfromWangshanFormation(WL)andtheotherfourfromGouhouFormation(GL)]werecollectedfromoutcropsofthenorthernAnhuiProvince,andREEconcentrationsinlimestoneweremeasuredbyICP-MS.ThedepositionalenvironmentandsourceoftheREEwereanalyzed,andtheresultsimplysthatthetotalREEofsamplesarelowcomparedwiththerecentmarinesediments,whichrangefrom9.61to54.18mg/kgandanaverageof22.93mg/kg.ThePAAS-normalizedREE+Ypatternsoflimestonearecharacterizedby(1)lightREEdepletioninWLandenrichmentinGLwiththevaluesof(Nd/Yb)SNrangingform0.65to0.91and1.12to1.46,respectively;(2)lightnegativeCeanomaly(0.85–1.02)andpositiveLaanomaly(0.92–1.27);and(3)bothEu(0.91–1.23)andY(1.42–2.38)expressinglightpositiveanomaly.Thecharacterindicatedthatthedepositionalenvironmentwasoxygenated,withinfectionbythehydrothermalactivityandcontaminationofdetritus.