122 



I Kil. I loi- NAN.SKN. 



M.-N. Kl. 



Üimitr ftrid C(itnil-i.hi<riih 



Fig. in. Profile across Frøia and Hitteren from point C to point \) in Fig. ro8. The vertical scale is 5 times 



between height 



less than 10 tiiftrcs below sca-lcvcl, ;. c. the cd^œ of the horizontal plane 

 iiirlicatol l)v Ihi- summits of the manv shoals and sunken rocks, where 

 it is houndeil by the stecjKT sideslopes of th.e j)latform. 



'The t()p<),t;raphy of the larg-e island llittcrcii shows a consiflerably 

 o-reater variation than that of Smolen, but there is a well developed strand- 

 flat, especiallv in its western (Fi.y. no) and northern part (cf. Fi^. 107). 

 The strandfiat is, however, not so perfectly level as on Smolen, and is on 

 the whole somewhat higher, to a great extent above 30 metres. It cuts 

 through a variety of geological structures. 



The northern and northeastern part of the island is according to 

 Schetelig [19 13] built up chiefly of pressed igneous rocks, gneisses and 

 gneiss-granites, with a belt of diorite passing across this region from west 

 to east. The middle and southeastern part of the island consists of diorite, 

 with a border of conglomerate and sandstone (prol^ably of Silurian or 

 early Devonian age) along the eastern half of the south coast. The western 

 part of Hitteren is built up of comparatively young granite [cf. Schetelig. 

 1913, Reuscli, 1914]- 



In the profile (Fig. in), across Hitteren and Froia, the occurrence 

 of the various rocks is indicated according to Schetelig's map. The strand- 

 flat is seen cutting through the various geological formations to some 

 extent, but in the southern half of Hitteren the land is higher (cf. Fig. 

 107). This region consists to a great extent of diorite. There are a good 

 many liills rising to 160 metres above sea-level or more, some even to 220 

 and 227 metres, and Els F jell to 319 metres. The strandfiat extends al- 

 most horizontally to the foot of the higher hills (cf. Jamt F jell in Fig. in). 



In the western granite region of Hitteren there is also a small sharply 

 defined mountainous area, rising abruptly above the plane of the strandfiat 

 to heights of 150 and 200 metres, Skår F jell even to 306 metres (MorvoUs- 

 tuva) and 369 metres (Morkdalstuva). Otherwise the strandfiat is well 

 developed in the coastal region of this western part of the island and 

 on the manv smaller islands outside the coast to the west and southwest, 

 likewise consisting of granite, as well as on the small islands to the north- 

 west (Sæbuoi, Stromsoi, Gjedsoi, Skåroi, <K:c.) consisting of diorite. 



Although as was said above, the stranrlflat of Hitteren is not on the 

 whole as remarkablv level as that of Smolen. still it is extremely even in 



