A HISTORY OF KENT 



b. Strata Proved in Deep Borings only 



THE GEOLOGY OF THE SURFACE ROCKS » 



General Structure. — The predominant factor in the arrangement of 

 the strata forming the surface of Kent is the general northward slope or 

 ' dip ' of the beds already referred to, by reason of which the older rocks 

 are seen only in the more southerly part of the county and the newer 

 only along its northern margin, every formation in turn sinking north- 



' The Geology of Kent has a voluminous literature, to which only passing reference can be made in 

 this outline-sketch. For detailed information regarding the stratigraphy of the county the following works 

 should be consulted : — Memoirs of the Geological Survey : ' The Geology of the Neighbourhood of Folke- 

 stone and Rye' (sheet 4 of I -inch map) by F. Drew (1864) ; 'The Geology of the Weald' by W. 

 Topley (1875), for the beds below the base of the Chalk and for matters connected with the valley 

 systems of the We.ild and its denudation ; 'The Geology of the London Basin' by W. Whitaker (1872), 

 for the Chalk and Eocene ; ' The Geology of London and of part of the Thames Valley,' vol. i., by 

 W. Whitaker (1889), for later information respecting the Eocene, for account of the River Drifts and 

 other superficial deposits, and for discussion of the deep-seated geology as then known ; and vol. ii. 



