Fig. 89. Panoramic view of Tananger Bay and the islands outside, taken 1 



Lij^litliousc is 15 metres above the sea, and its base about 8 metres. 

 The picture demonstrates tlie remarkable flatness of all the islands out- 

 side the coast. These islands consist of phyllite. The picture also shows 

 the roughness of the granite surface of this strandfiat north of Tananger. 



The ridge on the peninsula south of Tananger Bay (to the left in the 

 picture) has a fairly rough contour, although it is built up of phyllite. 



Further south, at Hellesto (Håland) at the northern end of Jæderen, 

 ^\e find the same strandfiat cut in solid rock at the foot of steep mountain 

 slopes, rising to heights of 90 metres al)ove sea-level (Fig. 90). According 

 to Reusch's geological map [191 3] the rocks in this region are argilaceous 

 schists (phyllite). 



The height of the rock of Feisten, in the sea southwest of this place, 

 is about 12 metres above sea-level. 



Relation between the Geological Structure of the Coast and the 

 Occurrence of the Strandflat. 



In the preceding description of the strandflat along the Norwegian 

 west coast, occasional remarks have been made on the geological structure 

 of the coast and its relation to the occurrence and extension of the strand- 

 flat. The geological dates are taken from the geological maps of the coast 

 anrl from Reusch's description with map of the geology of Sondhordland 

 and Ry fylke [191 31- 



As has been pointed out on several occasions, it is striking how the 

 strandflat often extends eciually over regions with very heterogeneous 

 geological structure, without showing any appreciable differences in its 

 altitude or in its whole appearance. The plane of the strandflat is. for in- 



