RELATION TO MESOZOIC ROCKS IX THE LEPONTINE ALPS. 



215 



altitude. These, together with 

 the peaks north of Scopi, are 

 gneiss ; it, with the Alp Yit- 

 gira, mainly consists of the 

 "spotted rock," with slates 

 and impure quartzites, in 

 which occasionally Belem- 

 nites and other Jurassic fos- 

 sils occur. 



We began our examination 

 of Scopi at the northern part 

 of the steep slopes overlooking 

 the Lukmanier road *, and 

 worked southward over the 

 area on w^hich the map indi- 

 cated the occurrence of fossils. 

 The annexed section (fig. 7) 

 represents diagrammatically 

 the structure of the moun- 

 tain t. At its northern end 

 is gneiss of ijormal aspecr. 

 This, in the first little ravine, 

 is followed by a rather fi.ssile 

 schist, which appeared to us 

 to be probably only the gneiss 

 in a very crushed condition. 

 Be this as it may, there can 

 be no doubt that this rock is 

 a member of the crystalline 

 series, greatly crushed. Ap- 

 parently below it, a short 

 distance up the northern 

 bank of the ravine, is the 

 first outcrop of a rock ob- 

 viously of sedimentary origin. 



* The upper part of the pass is 

 comparatively level, rising fi-om 

 about GOOO to 6243 feet, the highest 

 point. 



t We can guarantee its general 

 correctness ; but to arrive at 

 minute accuracy and give detailed 

 measurements would be a long 

 and, in my opinion, needless 

 labour. We were moving along a 

 curved line from the western to 

 the south-western slopes of the 

 mountain, and were constantly 

 scrambling up and down over a 

 band perhaps a hundred yards in 

 vertical heiglit, and from 500 to 

 800 feet above the grassy plain 

 which forms the upper part of the 

 pass, according as promising out- 

 crops of rook were exposed on the 

 steep turf slopes. 



Q.J.G. S.No. 182. 





^02 





a' 

 o . 



