DRIFT-STAGES OF THE DABENT VALLEY. 



139 



of a burnt-sienna colour, in places mottled with yellow, and 

 rouglily heaped or piled together without apparent bedding, although 

 there are here and there lenticular seams of sand and loam, and 

 resting on a nearly level base of Lower Green sand : — 



1. Tertiary flint-pebbles of all sizes — some very small and some broken —in 



profusion. Mixed with these in a nearly equal total are — 



2. White flints, many in small angular fragments, some subangular and 



worn, and some in large blocks but little altered. 



3. Many angular fragments of through-stained yellow flints. 



4. Some subangular fragments and a few large blocks (one 20"x20"x8") of 



iron-sandstone. 



5. A few brown-stained, much-worn flints. 



6. A few worn pieces of Tertiary sandstone and Pudding-stone. 



7. A very few rare, light-coloured, flat, ovoid quartzite pebbles. 



Fig. 5. — Section along the watershed at Limpsjleld. 



The Lower Green 



sand Escarpment. 



693. 



Eedland'a 

 Farm. 



Limp^field 



Common. 



520. 



Titsey. 

 500. 



]sr. 



The Chalk 

 Escarpment. 



Pig. 6. — Section across the pass between the Oxted stream 

 and the Darent. 



w. 



E. 



Limpsfield 



Common. 



527. 



Farley 



Westerham 





Hill. 



Station. 



Darent 



478. 



346. 



E. 



3Tr£' 



a. Red Clay-with-flints of the Chalk Plateau. 



h. High-level ochreous flint-gravel. 



c. Brick-earth and trail. 



c. Low-level Gravel. 



o. Site of Palicolithic flint-implements of the high-level valley tvpe. 



2. Chalk. 



3. Upper Greensand and Gault. 



4. Lower Greensand. 



5. L'pper-Wealden strata. 



The Iron-sandstone comes from the underlying Lower Green- 

 sand, and the quartzite-pebbles are derived, not from the New lied 



