依-舒地堑汤原与方正断陷宝泉岭组二段沉积体系的异同

汤原断陷和方正断陷是位于依兰—舒兰地堑内两个主要的一级负向构造单元,表现为受东西两条深大断裂控制的双断式断陷。汤原断陷和方正断陷古近系宝泉岭组二段在相类似的构造与沉积背景下沉积特征有异同。共识别出3种主要沉积相类型：扇三角洲相、湖泊相和湖底扇相。控盆断裂对这两个断陷的沉积具有同样重要的控制作用,宝二段沉积时期方正断陷的构造作用强度比汤原断陷大得多,方正断陷湖盆面积比汤原断陷小,但湖盆深度要深。

The Similiarities and Differences of Baoquanling Group Second Section Sedimentary System Between Fangzheng and Tangyuan Fault Depression in Yilan-Shulan Graben

Fangzheng fault depression and Tangyuan fault depression are two important negative direction structural element in Yilan-Shulan graben.empressed a double faulting depression controlled by two east and west deep large crack.Eogene Baoquanling group second section has somewhat similarities and differences in the same structure and sedimentary background in Fangzheng and Tangyuan fault depression.Recognize three important facies style like fan delta facies、lakes facies and sublacustrine fan facies in total.Dominate basen crack has the same control effect to the sedimentary of the two fault depression.Fangzheng fault depression＇s tectonization intensity is bigger than Tangyuan fault depression in Baoquanling group second section sedimentary period.Fangzheng fault depression＇s lake basin area is smaller than Tangyuan fault depression in Baoquanling group second section sedimentary period,but Tangyuan fault depression＇s lake basin depth is deeper than Fangzheng fault depression.