Abstract:

The structural characteristics and origin of reverse drag anticlines discussed by many authors are reviewed in this paper. Based on recent research on Neogene and Quaternary in Bohai Bay Basin, author proposes a new explanation: the reverse drag anticlines and associated single or complicated y-shaped normal faults resulted from the modes of movement and differential displacement by regional extension, and it is emphasized that the characteristics and origin of reverse drag anticlines are different from negative flower structures and the former should not be confused with the latter.

Key words: reverse drag anticline, y-shaped fault, differential displacement, flower structure