高邮凹陷古近系戴南组戴一段物源分析

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

摘要:

在分析了高邮凹陷戴南组沉积期构造和沉积背景的基础上，利用重矿物组合分析法、矿物成分分析法、砂岩质量百分含量法、地震反射波组形态分析法和古地貌分析法，对戴南组戴一段的物源进行了分析.认为高邮凹陷中东部戴南组戴一段北部物源来自于柘垛低凸起，存在4个主要物源，南部物源主要来自通扬隆起区以及东南部的吴堡低凸起，存在5个主要物源.在此基础上，编制了戴南组戴一段的沉积体系分布图.

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.