FALSE STRATIFICATION. 



143 



the stratified, in presenting none of those parallel surfaces, 

 or divisions into layers, which are remarked in all sedimentary 

 deposits ; it usually occurs as a shapeless mass of mineral 

 matter, as in the accompanying figure (fig. 68). 



VEINS OF GrRANITE AND OTHER laNEOTJS EoCKS. "We 



have stated that rocks of this kind occur in veins, which, 

 in the instance of granite, are frequently traversed by veins 

 still newer than themselves (fig. 69). 



FIG. 69. 



These veins have often penetrated through the overlying 

 deposits, and flowed over the rocks which they have displaced, 

 as shown in fig. 70. 



FIG. 70. 



FALSE STRATIFICATION. Occasionally rocks of this kind, 

 especially granite, at its junction with slate and other rocks, 



