Digit wrote:So in the absense of info from geologists what do you use to support your ideas?
For the Sunda landbridge?
Seismology, volcanism, tectonics. Whatever you want to classify it as. There's a mother of a volcano there: Krakatoa. I find it entirely plausible, no, I find it
likely, that it once lifted up the seafloor and created a landbridge, and destroyed it again millennia later. I have
seen, with my own eyes (OK, OK, it was on television...) an island – land – rise up out of the sea as a direct result of volcanism. That was offshore from Iceland. I think it was 1962. It can happen in a matter of weeks.
Hawaii is 'walking' eastward too. Creating new land on its eastern end, while subducting 'old' land on the west side. That's what volcanoes do.
Hell, the whole string of western and southern islands of Indonesia exist
because of the volcanoes! The volcanoes created Indonesia!