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1 Introduction Sediment provenance study,as an important part of basin analysis,is a key for source area definition,paleogeographic reconstruction,sediment transport route identification,and tectonic evolution(Haughton et al.,1991;Morton et al.,1999;Fontanelli et al.,2009;Cawood et al.,2012).The Qiongdongnan Basin(QDNB),lies in the northwestern passive continental margin of the South
1 Introduction Sediment provenance study, as an important part of basin analysis, is a key for source area definition, paleogeographic reconstruction, sediment transport route identification, and tectonic evolution (Haughton et al., 1991; Morton et al., 1999; Fontanelli et al., 2009; Cawood et al., 2012). The Qiongdongnan Basin (QDNB), lies in the northwestern passive continental margin of the South