THE PRE-ADAMITE EARTH. 



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242. Zoological terms : four principal divisions of animals. 243. 

 Subordinate nomenclature. 244. Table of the classes of animals. 

 245. Zoological characters of the principal divisions. 



215. XI. SYSTEM OF COTE D'OR. This system in its direction is 

 nearly at right angles to the preceding, see fig. 116. The Jurassic 



deposits, m, fig. 128, are pushed 

 up, and the lower cretaceous 

 strata, n, ranged horizontally 

 upon them, as shown in fig. 

 128. This system may be 

 traced without interruption 

 from Luxembourg to Roehelle, 

 and in all the crests of the 

 Jura. It was by this cata- 

 strophe that the eastern border of the central plateau of France 

 was raised and dislocated after the formation of the Juras- 

 sic group, which is there considerably elevated ; while the 

 other borders have suffered no derangement : which indicates that 

 this plateau, in the chief part of its extent, has undergone no 

 change since the Jurassic period. Traces of this catastrophe are 

 also manifested in several other parts of France north and 

 south ; in several parts of Germany ; and especially in the 

 Erzgebirge, which, though divested of the Jurassic limestone, has 

 the lower cretaceous strata in horizontal beds at its foot. 



The date of this catastrophe is, therefore, between the period of 

 the deposition of the lower cretaceous strata and that of the 

 Jurassic group. 



216. XII. SYSTEM OF MONTE Viso. The dislocation of the 

 lower cretaceous deposits, n, fig. 129, by this catastrophe, and the 



presence of the upper cre- 

 taceous deposits in their 

 horizontal position, are 

 distinctly manifested in 

 the Alps of Dauphine, 

 showing that the date of 

 the catastrophe is between 

 the periods at which the 

 upper and lower cretaceous 

 deposits were made. 

 The upper cretaceous strata, represented by beds of nummulites, 

 and sometimes, but very rarely, by grey and compact limestone, 

 are alone found to be horizontal, as may be seen on the Col de 

 Bayard and the Col Maurin. Indications of this system may 

 also be traced at the south of Grenoble, in the north of Dauphine, 

 18 



Fig. 129. 



g fdcba 



