88 Carl Fred. Kolderup. 



dote but the abundant iron oxides give them a red or redbrown 

 colour. Tested with HC1 the red sandstones grow grey-green. 

 The section Krokevand-Eidsfjeld (PI. II and page 40) shows 

 how the layers alternate and how thick they usually are. The 

 total thickness is 483,7 m., the thickness of the green sandstone 

 layers 438,2 m., and of the red layers only 45,5 m. The thickness 

 of the green sandstones (partly with conglomerates) which have 

 been formed during periods of quick sedimentation is almost ten 

 times the thickness of the red sandstones. Perhaps the layers of 

 the green sandstones have been formed in the wet time of the year 

 and the red in the dry. One layer of green and the correspon- 

 ding layer of red sandstone then would represent the sedimen- 

 tation of a year. 



The series of green sandstones. 



(Page 49—53). 



On the summit of Eidsfjeld we find above the series of red 

 and green sandstones a conglomerate with more rounded pebbles 

 than in the basal conglomerate, elsewhere we find green sand- 

 stones in the highest mountains in the central part of the area 

 (fig. 29). In these series of green sandstones we have found al- 

 most all the plant fossils. 



The series of red conglomerates and red sandstones 

 of Lillehesten. 



(Page 53-65). 



The rocks in Lillehesten in the eastern part of the area are 

 somewhat different from the rocks already mentioned. East of 

 the gap between Kvamshesten and Lillehesten, perhaps represen- 

 ting a "fault", we find alternating layers of red sandstones, and 

 red conglomerates, which are rare farther west (fig. 31). Some layers 

 of green sandstone occur in the bottom of Lillehesten. 



A section from Grundevand (620 m. above sea) near the gap 

 between Kvamshesten and Lillehesten and up to the big masses of 

 red conglomerate in the western part of the western summit of 

 Lillehesten shows the alternation of red sandstones and red con- 

 glomerate (PI. III). The total thickness of the 80 layers measures 

 346,5 m. ; the thickness of the conglomerates is 284,6 m. and of 

 the sandstones 61,9 m. Walking in north-eastern direction from 



