Abstract: The carbonate breccias exist widely in the Nanpan river area during
the Permian and Triassic periods, According to their petrological chara-
cteristics and relations with surrounding rocks, we can regard them as
deep water carbonate rucks of the debris flow and turbidity current se-
diments, In this area Ilong Wu movement resulted in a lot of fault-
trough basins controlled by faults in different directions and obvious
difference in lithofacies and topography between the fault一trough and the
platform，which was very helpful for gravity flow. carbonate to form.The
patterns of the carbonate breccias can reflect the paleotectonic geomorphic
environment at that time.