I92I. Xo. II. THE STRANDFLAT AND ISOSTASY. I53 



Fig. 118. Strandflat cut in granite at the foot of steep granite mountains near Kunna 

 south of Salt Fjord. iSept. 9, 19121. 



knolls with steep sides and fairly deep depressions between them. But 

 the summits of the knolls are to a great extent at the same level of about 

 30 metres or somewhat more above the sea. 



I have had no opportunity of measuring the heights of the strandflat 

 along this coast, but judging from the impression made when seen from 

 the sea (c-f. Figs. 117, ii8, 120. and 121 ), I believe that there is. at least 

 to some extent, a low level similar to that measured by Sahlstrom on 

 Donna and Heroi. There is possibly also a higher level as. for instance, 

 indicated by the summits of the many rounded knolls on Briksvær Island, 

 mentioned above. 



Ahlmann says [1919, p. 205" that on the seaward side of the fairway 

 between Sandnessjoen and Bodo "there occur continuous level surfaces 

 at 5 — 10 metres and at 20 — 30 metres altitude above sea-level". 



The picture Fig. 119 of the island Landegode, north of Bodo, shows 

 two levels, the low level of the south-westernmost point of Landegode 

 and of the islets to the west, and a higher level on the southwestern part 

 of the island in front of the steeply ascending mountain side (partly 

 covered by a fog in the picture). As pointed out by Rekstad [1913, p. 15 

 this plateau is about 100 metres above sea-level, and cannot therefore 

 belong to the strandflat we are discussing in this paper. But it has ob- 

 viously been cut by shore erosion. It is noteworthy that it has very nearly 

 the same height as a similar plateau (or "shore-line") at Torghatten 

 which is about 109 metres above the sea [cf. Rekstad, 191 5, p. 45 and 

 Pl.\ II. Fig. 2 . I consider it probable that these plateaus may be remnants 

 of an earlier strandflat, perhaps formed at the beginning of the first 

 Great Ice Age. They are in both these cases cut in granite and have thus 

 been able to survive later erosion. Remnants of an old strandflat at a 

 similar level may perhaps also be found at other places, c. g. on the \'iker 

 Mountain (granite) northwest of Torghatten where there is a fairly ex- 

 tended plateau, on the coast of the mainland inside on the southern side 

 of Sonnesviken, on the southwestern corner of Vega (granite), &c. 



