J^ait til. 



CyENOZOIC. 



TERTIARY AND QUATERNARY. 



Fig. 71.— View near Corfe Castle, in Dorsetshire. 



H E strata overlying the Chalk in this country 

 comprise a series of clays and marls, sands, 

 gravels, and pebble-beds, with but few layers of 

 limestone, or, indeed, with few hard bands that 

 exhibit prominent layers of bedding. Hence they 

 appear in marked contrast to the Secondary and older 

 formations, for the beds have been less consolidated by the 

 pressure of overlying deposits, and thus they form a transition 

 between those harder rocks and the deposits now in course 

 of accumulation. 



The term Tertiary introduced by Cuvier and Brongniart, has 

 been applied to the strata newer than the Chalk.' The term 



^ The terms Superior or Newest Floetz Order were used by Conybeare and 

 Phillips {1S22), and Supercretaceous by De la Beche (1830). See G. Cuvier and 

 Alex. Brongniart, Desc. Geol. des Environs de Paris, ed. 2, 1822, p. 9 ; Buckland, 

 Ann. Phil. xvii. (n.s. i.) 451. 



