and Diastrophism in Oceanica. 



95 



Fig. 1. 



Fig. 1. Geologic plan of Pacific Ocean and bounding lands drawn on 

 Groll's map. Spaces between dashed lines circumscribe Australasia and the 

 Oceanide arcs. Oceanic deeps in solid black. Closely ruled horizontal lines 

 indicate the areas of the Tasman and New Zealand geosynelines. 



Lands ruled vertically indicate the Antarctic system of structures ; lines 

 to left, the Asiatic system ; lines to right, the American system ; horizontal 

 lines, the Atlantic system. 



