Sediments Provenance of Gaoyou Depression During Sedimentation of First Member of Dainan Formation of Paleogene

Abstract:

On the basis of the analysis of tectonic and sedimentary background of Gaoyou Depression during the sedimentation of Dainan Formation, the sediments provenance of Gaoyou Depression during the sedimentation of the first member of Dainan Formation of Paleogene was analyzed by means of the heavy mineral assemblage analysis, mineral component analysis, sandstone ratio contour analysis, seismic reflection analysis and paleogeography analysis. It is considered that the north provenance of Gaoyou Depression during the sedimentation of first member of Dainan Formation is from Tuoduo lower uplift, and 4 provenances are developed, and the south provenance is from Tongyang uplift and Wubao lower uplift, and 5 provenances are developed. The map of sedimentary system distribution of the first member of Dainan Formation is presented.