1914 — 15] Fj eldby giringen niellem Sørfjorden og Samnangerfj orden. 225 



Zone of Marble and Phyllite. 



(Pages 69—91.) 



A zone of marble, phyllite and some other crystalline schists, 

 partly interrupted by faults, extends from the southern part of 

 Osterøen across Rødberg, the western coast of Langevand and 

 down the tract west of Hisdal, where it terminates. The narrow 

 belt which extends across the isthmus connecting Liodden to Liøen. 

 is certainly a continuation of this zone. 



The northernmost part of marble of considerable extent is 

 located in a hollow basin ca. 370 m. above sea-level, north of the 

 farm Hekland, on the south side of Osterøen. The distribution of 

 the most extensive marble-zones may be seen in fig. 23. Besides 

 the two larger occurrences represented on the map, we have also 

 several smaller lenses. 



On the farm of Skaftaa in Osterøen pure white marble has 

 been worked for the calcium-carbide factory at Odda in Hardanger. 

 An almost black marble occurs together with this white one. 



The marble-occurrences on the continent south of Sørfjorden 

 do not lie in a rectilineal continuation of those of Osterøen; 

 one or several cross-displacements of the masses must surely have 

 tåken place parallel to Sørfjorden. 



In the cuttings along the railroad we have an excellent oppor- 

 tunity of studying the various sections of the zone, the series of 

 layers of which may be seen on pl. II (XLVIII— LVI). More or 

 less schistose and more or less impure marble-rocks occur here 

 together with various crystalline schists, as quartz-sericite-schists, 

 phyllites (in part garnet-bcaring and chloritic), and gneisses. 



If from the railroad we ascend along the steep mountain-sides 

 in the longitudinal direction of the zones, we shall see that it 

 will be extremely difficult to keep distinet the various zones; some 

 of the smaller zones graduaily die out. 



In the white marble near the sehoolhouse in Trengereid a 

 quarry has been opened. 



An escarpment running east and west extends at the northern 

 end of the Dyvinshill, as may be seen from the high-road in Tren- 

 gereiddalen. (Figs. 27 and 28.) 



