ig2I. Xo. II. THE STRANDFLAT AND ISOSTASY. 9I 



VIII. THE STRANDFLAT OF THE SOUTHWESTERN 

 AND SOUTHERN COAST OF NORWAY. 



The Region of Karmøi. 



On Karmoi there is a well developed strandflat extending over nearly 

 the whole island. But here and there hills rise above the level of its plane 

 (cf. Figs. 77 B and 78), and this is especially the case in the middle and 

 southern part of the island, mostly on its eastern side. 



The northern part of the island consists of chlorite schists, the middle 

 and southeastern part of gabbro, and the southwestern part of granites 

 or gneisses. The strandflat extends equally over these different formations 

 without any appreciable difference in height. But the highest hills occur 

 chiefly in the gabbro region. The coast of the mainland along the eastern 

 side of Karmsund consists of chlorite schists. 



According to levelling made north of the bay at Angvaldsnes, the 

 general level of this strandflat is about 29 metres above the sea. But a 

 great part of the plain, on which many farms are situated, is between 16 

 and 20 metres, and this is also the general level of the strandflat on the 

 mainland along the eastern side of Karmsund. The town of Haugesund 

 is situated on this plane at the same height about 17 metres above sea-level. 

 The heights were measured by levelling with a theodolite from a hill at 

 30.5 metres above sea-level, north of Angvaldsnes Bay. 



Fife- 78 gives a panoramic view taken from this hill. By careful 

 levelling with the theodolite it was ascertained that the ridges of the 

 undulating plain of Karmoi were very nearly at the same level as this hill, 

 or a metre or two lower. E. g. the height of the platform on which the 

 Angvaldsnes church is lying, was found to be 29.5 metres above sea-level. 

 The bases of several houses in Haugesund were measured to be at about 

 16 metres above sea-level. 



To the north Bjorjene Hills on Karmoi are seen rising above the 

 plane of the strandflat. On the mainland hills are also seen rising above 

 this plane, but e. g. east of Haugesund they distinguish themselves sharply 

 from the level of the strandflat. 



A sharply defined and widely developed strandflat extends south- 

 wards aloner Karmsund on the mainland (Fig. 80) as well as on Karmoi 



