in Norway and in Canada* 119 



curious aggregations. There may be observed masses like s^r-- 

 pentine, portions of greenstone, &c., combined in the most varied 

 manner with the slate ; while many phenomena render this place 

 suitable for a more minute study of these conglomerates." 



" Farther on, at several points in the neighbourhood of Aamdal, 

 it may be observed that the mica schist contains concretions having 

 the appearance of imbedded fragments, and with an aspect, 

 from which one must believe that it has once been broken up, 

 and its pieces afterwards irregularly joined together. For ex- 

 ample, there is exposed between Aamdal Copper-work and Skafse 

 church, a large area of this character. The rock is a fine slaty 

 quartzose mica schist, which, as if by an internal breaking-up^ 

 has acquired a well marked brecciated structure. Only a few of 

 the recemented pieces have rounded angles, the most of them 

 being sharp-cornered. The whole rock, but especially the frag- 

 ments, contain some feldspar. I will mention one other instance, 

 from which it appears that hornblende schist may also some- 

 times contain fragments of foreign masses. This is the case 

 on Skafseberg, over which the road leads from Mo to Skafse 

 church. Here the concretions are again feldspathic, and even 

 gneissoid, but most of them resemble rather the rudiments of 

 small bent layers or beds, than fragments cemented into the horn- 

 blende schist."* 



As before remarked, the quartzites or rocks allied to them, 

 such as the quartzose mica schists and gneiss, constitute by far 

 the greatest portion of the group. Next in frequency and extent, 

 the greenstones or diorites may^be placed ; after these the horn- 

 blende, talc, and chlorite schists, and the clay -slates ; and lastly, 

 the conglomerates. 



Foldings of the strata in the quartzose group, have been ob- 

 served in various places, but they do not approach, in intricacy, to 

 the contortions of the gneiss formation. The strata are seldom 

 found horizontal, and generally have a dip of more than 45° ; 

 although they do not seem, generally, to be so near to the 

 vertical as those of the gneiss formation. The direction of the 

 strike varies much more than in the latter, but parallel groups 

 have been traced upwards of eight geographical miles, on the 

 strike. In some places, an approach to a regular succession of 

 the rocks has been observed, but the particulars related are by no 

 means conclusive. 



As before mentioned, the scenery of this district is of the most 

 * Geae Norvegica, I. 430. 



