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
_-_figure_12.jpg)
Fig. 12.—The scattering of the chains of islands by New Guinea, diagrammatic.
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.
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Fig. 13.—Depth chart of the neighbourhood of New Guinea.
In the depth chart in Fig. 13,[1] let us consider both of the southernmost rows of the Sunda Islands. The chain of the islands
- ↑ The excellent map of the Sunda Islands in G. A. F. Molengraaff, “Modern Deep-sea Research in the East Indian Archipelago,” Geogr. Journ., 1921, pp. 95–121, giving land elevations and sea depths at similar intervals, is the clearest for this purpose.
