oblique bedding

Sedimentary structures are mainly massive bedding, large trough cross bedding and oblique bedding with few parallel bedding, wave bedding and horizotal bedding;

沉积构造以块状层理、大型槽状交错层理和斜层理为主，见平行层理、波状层理和极少量的水平层理。

Consequently, in some cases ( such as oblique bedding progression), the use of thickness method will incur error in recovering palaeostructural form.

因而在某些情况（如斜层推进）下，用厚度法来恢复古构造形态将会造成错误。

Sonar survey has a very high resolution and signal emission frequency, so it can be used to obtain high-quality shallow profile and the textural and structural details of sedimentary strata and indicators of deltaic deposits such as oblique bedding.

声波探测具有很高的分辨率和信号发射频度，可以获得高品质浅地层剖面，显示出沉积地层的结构与构造细节、斜层理等三角洲沉积标志特征。