200 



DALY. 



uplift or subsidence since the Glacial period. (See Figs. 14, 21-24, 

 and 32.) Coasts which have been uplifted m the Recent periofl ought 

 to have submarine terraces at less depth, or else wave-cut benches 

 above sea, according to the amount of elevation. If the post-Glacial 

 uplift has been more than 80 m. or thereabouts, no submarine bench 

 or shelf should normally be found. (See Figs. 25-27 and 31.) 



A serious difficulty in fully applying this test is found in the common 

 lack of facts sufficient to date uplifts with accuracy. Coralliferous or 



ELEV A TED 



LAGOON 



25 



l ll lllllll 



_? Sea Miles °_ 



^ Km. 



Sections of uplifted islands, showing no submarine shelves. 

 Figure 25. Elevated atoll of Kambara island, Fiji group. 

 Figure 26. Elevated island of Nauru, near the main Gilbert group. 

 Figure 27. Ocean (Paanopa) island, near the main Gilbert group, lately 

 elevated. 



Water shown in black; rocks, including the elevated limestones, are lined. 

 Uniform scales; vertical scale 3 times the horizontal. 



other limestones appear in the Solomon, New Hebrides, Fiji, and 

 Tonga islands, at respective heights of 335, 450, 300, and 90 m. 

 According to the various observers in these groups, the uplifts were 

 chiefly accomplished in Tertiary time, before the Glacial period. 

 Yet, even for the groups mentioned, as well as at many other localities, 

 some uplift during or after the Glacial period can hardly be doubted. 

 The fossil contents of raised reefs and the freshness of strand-line 

 marks seem incapable of explanation on any other assumption. The 

 following Table (III) summarizes typical cases. 



