Vol. 50.] 



ON THE GEOLOGY OF MONTE CHABERTON. 



305 



Jurassic Corals) to revise the European Calamophyllw, we have the 

 less hesitation in referring the specimens to GalamopJiylliafenestrata, 

 Reuss. 1 The specimens agree in mode of growth, the thickness of 

 the walls, the number of the septa, and the coarseness of the 

 dentation. The prominence of the collerettes is well shown in one of 



Fig. 1 



N ORTH SIDE OF THE VALLEY OF R. CLOS DES MORTS. 



li Uu^J Cretaceous, Z,-. Shelly Limestone. (. Clos des Marts 

 h Coral Reef. ) Limestones. 



P.... .Faults. 



[This shows the Clos des Morts Limestones faulted into the Triassic dolomites. 

 The direction of the lines in the dolomites indicates bedding.] 



Fig. 2. — Crumpled Clos des Morts Limestones carried by a thrust- 

 plane on to uncontorted dolomite. (North side of the valley of 

 B. Clos des Morts.) 



a = Black shale. 

 b-c = Triassic dolomite. 



Thrust-plane. 



1 A. E. von Reuss, ' Beitrage zur Charakteristik der Kreideschichten in den 

 Ostalpen, besonders im Gosauthale und am Wolf'gangsee,' Denkschr. d. k. 

 Akad. Wissensch. Wien, vol. vii. (1854) p. 105, pi. v. figs. 20, 21. 



