I92I. No. II. THE STRANDFLAT AND ISOSTASY. 289 



It should, however, be kept in view that the lower level of the emerged 

 strandfiat in Norway may have a 1()\\ height similar to that of the trans- 

 gression of the Tapes-Littorina sea, and that this level dates from a time 

 before the last glacial epoch. If its apparent uphea\al is to some extent 

 due to a sinking of sea-level, as seems probable, we must conclude that 

 there have l)een several oscillations of sea-level during and after the last 

 glacial period. 



When the relation between the inclinations of the upper and lower 

 shore-lines of northern Norway was discussed (pp. 256 ff.), it was assumed 

 that a general movement of the level, equal to a sinking of the sea-level, 

 has occurred. It may here be pointed out, that the relation between the 

 inclinations of the two raised shore-lines may of course also be explained 

 only by a rise of the sea-level of about 6 metres during the Tapes period 

 and a subsequent sinking of the same amount. 



The horizontal, raised levels of the strandfiat seem, however, to indi- 

 cate that there has actually been some sinking of sea-level since inter- 

 glacial times, and the observations of Kaldhol, previously mentioned 

 (pp. 248 ff.), in the regions near the mouth of Nord Fjord, would be 

 difficult to explain without such an assumption. 



Vid.-Selsk. .Skrifter. 1. M.-N. Kl. 1921. No. 11. 19 



