306 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1917. 



upper Ostrca banks, 80 to 66 meters, the upper Tapes banks, early 

 neolithic in age, at 60 to 30 meters, the lower Tapes banks, Scrohic^i- 

 laria clay, and Mya banks, the latter only just above the level of the 

 sea. There is no trace of either the Ancylus elevation or the Litorina 

 subsidence, but the horizon of the latter is marked f aunally and cli- 

 matically by the Tapes banks. 



The only part of Xorway where any trace of the LUm^na sub- 

 sidence has been found is in Christiansand, the southernmost prov- 

 ince, where D. Danielsen (59) found that after a maximum late 

 glacial subsidence of 50 meters the land rose to about its present 

 level, and then sank again somewhat. J. Holmboe (60) also records 

 that during a wreck off the south coast of Norway in 1909 peat 

 fragments were torn from the sea floor, consisting of parts of two 

 beds, one arctic, with Betula nana^ and the other representing a cli- 

 mate somewhat warmer than tlie present, and evidently belonging to 

 the Ancylus period. During the formation of both these beds the 

 land must have lain at least 3 meters higher than at present. 



Owing to the dissimilar changes of level, correlation with Scania 

 can best be effected climatically. 



This correlation is to some extent supported by the fact that it 

 makes the maximum subsidence in Norway nearly coincide with that 

 in Scania. If it is correct, it indicates that Baltic interstadlal de- 

 posits are unknown in either Norway, Sweden, or Denmark, save 

 possibly the arctic fresh-water beds of Schonen, but are replaced 

 instead by deposits of later interstadia. Archeologically also the 

 correlation is supported, for the stone age occun-ed during the A71- 

 cylus and Litmnna periods in Sweden, and during the climatic opti- 

 mum in Denmark and Norway, while the succeeding period of eleva- 

 tion in the Baltic coincides with the bronze age. 



Direct comparison with the north German coast is impossible, be- 

 cause this more peripheral region was elevated above present sea 

 level at the close of the last glacial period, and was not subsequently 



