Abstract:

Seven sedimentary cycles could be distinguished in Tertiary Sha-3 member of Chengnan fault belt in Zhanhua Sag which recorded the changes of paleo-water levels.It is constant that the changes of water level caused by tectonic subsidence are bigger than that caused by climate.This suggests that:if faulting cycle and climate variation cycle synchronize perfectly,they are both helpful for the development of sand-conglomerate;if they do not synchronize,the development of sand-conglomerate is mainly controlled by faulting.

Key words: fault-depressed basin, sand-conglomerate body, genetic model, sedimentary cycle, climate cycle, faulting