ALPINE KLIPPEN 15 



origin is clearly indicated, either the crest (charniere), or the connec- 

 tion with the arch limb or roof 1 of the ancient recumbent fold having 

 been partially preserved. 



I shall not enter into the controversy on the intricate structure 

 of the Chablais district in Savoy, but shall close this review of the 

 Alpine Klippen and " lambeaux de recouvrement" with a short des- 

 cription of the crags in the Helvetian region between the lakes of 

 Brienz and Walenstadt, which offer some very remarkable analogies 

 with our Tibetan li.nestone crags. This region has been studied in 

 detail by Kaufmann, Mosch, Stutz, and quite recently by C. Schmidt 

 Steinmann and Quereau. 2 I shall follow the views as exposed by the 

 latter author. 



The crags under consideration are the following: — Gyswilerstocke, 

 Stanserhorn, Buochserhorn, Mythen, Zweckenalp, Iberger Klippen 

 (Grosse and Kleine Schyn, Roggenstock). The area where these 

 crags are situated is composed of rocks, which are all developed in 

 the Helvetian facies, the predominating mode of development in the 

 northern sedimentary belt of the Swiss Alps. The sequence of beds 

 in the crags themselves is entirely different. It has been designated 

 as Vindelician facies by Steinmann and Quereau, and it is much 

 more closely related to the Austrian (Tyrolese) than to the Helvetian 

 development of Alpine rocks. All the crags rest on the tertiary 

 flysch, the youngest member of the Helvetian sequence, and in their 

 occurrence are confined to synclinal depressions in the strike of the 

 folds, making exception, however, of the two crags of Roggenstock 

 and Mordergrub, which are placed on a recumbent anticlinal fold of 

 the Helvetian sequence, Kaufmann and Mosch believed the crags 

 to be anticlinal outcrops, forced and squeezed through the originally 

 overlying sandstones, but from more recent investigations they seem 

 actually to rest on the underlying sandstones, the folds and flexures 



1 B. Willis. — he. cit., p. 220, 221. 



2 Quereau, Die Klippenregion von Iberg, Beitrage zur geologischen Karte der Schweiz, 33 



Lieferung. 



( 15 ) 



