Page:The origin of continents and oceans - Wegener, tr. Skerl - 1924.djvu/93

Rh well be brought into connection with the passing and drifting away of the Australian block.

The depth chart of the New Guinea region gives us many details of these later movements of Australia. As explained diagrammatically in Fig. 12, the great

Australian block, with its anvil-shaped, thickened, anterior end, formed by New Guinea being folded into a high and recent mountain chain, forced itself from the south-east between the previously (probably) closed chain of the more southerly Sunda Islands and of the Bismarck Archipelago.

In the depth chart in Fig. 13, let us consider both of the southernmost rows of the Sunda Islands. The chain of the islands