Tectonic movements producing Pacific continental margin between Asia and Australia
Geological structure of the Pacific Ocean continental-margin segment, between Asia and Australia, varies significantly. The sites with relatively high rate of accumulation of Mesozoic-Cenozoic sediments have sharply different hypsometric locations. Above and underwater ridges and interbasin depressions have inherited and synsedimentary development. There are no traces of twinning or clustering of sedimentary and volcanogenic layers; there are no deposits accumulated in the oceanic environment; there are many interruptions in sediment accumulation and washing-out of earlier deposits, and many unconformities. All these and other facts point to the dominant role of differentiated vertical tectonic movements in the formation of the modern structure of this segment of the continental margin.