Abstract:

Devonian deposition of the overthrust nappe is the typical compensation deposition of the shore and shallow sea in Upper Yangzi passive continental margin. The cyclical deposition of front shore and near shore facies from turbid water terrigenous debris overlaps from the west to the east in the background of continuous water inflow; The mixed deposition of turbid water and clean water is the filled one of regressive sequences form shelf and off-shore to lagoon; In the period of clean water, it is the carbonate platform deposition of shallow water, According to the calculation of the depositional gradient，the horizontal thrust is about 30 kilometers.

Key words: Deposition model, Depositional environment, Devonian