Kvamshestens devonfelt. 91 



The plant remains. 



(Page 70-73). 



My assistants and I have at 18 different places found plant 

 remains, but the plants are unfortunately very imperfectly preser- 

 ved in the hard sandstones. 



The plant remains are very like those which I have found 

 in the Hornelen area. And assuming that we have no other 

 plant species than those described from the Hornelen area by 

 Professor Nathorst, Professor Holmboe and I came to the con- 

 clusion that the remains must belong toPsygmophyllum Kolde- 

 rupi, Thursophyton Milleri, Barrandeinea and some Aphyl- 

 lopteris forms. 



On comparison with Scotland we find that Thursophyton 

 Milleri is a characteristic plant for the Orcadian, where it appears 

 from the Wick group to the Thurso group. It is therefore likely 

 that the sandstones of the Kvamshesten area are of Orcadian age, 

 the same age as the sandstones in the neighbour area of Hornelen. 



The thickness and the origin of the area. 



(Page 73-81). 



The thickness of the series of strata is not the same at the 

 different places in the area. The thickness of the basement con- 

 glomerates and breccias is in the western part at Hængenipen 

 260 m. and along the southern side of the area still higher, so at 

 Kringlen 440 m., at Løkelandshesten 510 m., at Skaarefjeld 260 m. 

 and at Store Kvamshesten 600 m. These are the vertical thicknesses. 

 It is however possible that it would be more correct to measure 

 the thickness vertical to the direction of the overlying red and green 

 sandstones, but the original mountain sides of the basin are no 

 more present. On the northern side of the area the thickness is 

 less, so at Markevand and Leknesvand about 100 m., and further 

 east we find red and green sandstones at the base. 



The thickness of the series of red and green sandstones is 

 about 500 m. and of the upper green sandstones about 700 m. It 

 is almost the same thickness as that of the series of red conglo- 

 merates and red sandstones in Lillehesten. 



In fig. 37 we find the heights of the places where the bottom 

 of the Devonian area is exposed. By means of these heights we 

 are able to draw the lower borderline of the basement conglo- 



