Vol.51.] 



GREENLAND OF EAST SURREY. 



103 



with pebble-beds can be traced, all 

 the way from Leith Hill to Tilburstow 

 Hill, the pebbles becoming smaller, 

 but their vertical spread wider, in 

 their passage eastward. 



(3) That these facts, and others 

 which will be mentioned as the 

 sections throughout the district are 

 described, show that the Lower 

 Greensand of this area consists of 

 beds formed in a marine estuary or 

 narrow sea, within the influence of 

 strong currents, not far from land, 

 and deepening from N.W. to S.E., so 

 that no correlation with beds at Hythe 

 and Sandgate is possible. 1 



For the sake of clearness and easy 

 reference, I have numbered the groups 

 of beds developed locally throughout 

 this area of the Lower Greensand. 

 These are 2 : — 



Local Group No. 1. — The Fuller's 

 Earth Beds with the associated lime- 

 stones, sandstones, and cherts, be- 

 tween the Folkestone Sands and lower 

 pebble area, between Reigate and 

 Tilburstow Hill. 



Local Group No. 2 (consisting of 

 an upper and lower division). — The 

 chert-beds of Leith Hill and the 

 country to the west. The upper 



1 [In deference to the discussion on this 

 point, I would draw attention to the 

 absence or thickness, as the case may be, of 

 the Lower Greensand, as recorded in the 

 Memoirs of the Geological Survey and else- 

 where, under London, at Dover, at Folke- 

 stone and Hythe, round the South Downs, 

 in the Isle of Wight, at Pun field, at 

 Worbarrow, and near Devizes. The posi- 

 tion of the Streatham boring, where the 

 Lower Greensand is absent, lies 12 miles 

 due north of the outcrop of that series 

 north of Nutfield, which again lies 5 miles 

 north of the southernmost part of the area 

 dealt with here. — January, 1895.] 



- [In deference to the discussion on my 

 use of local names for the short quotation 

 of beds locally developed, I have willingly 

 substituted a system of numbers. These 

 numbers, however, must not be taken to 

 imply superposition ; they are only for the 

 'purpose, ofslwrt quotation. — January, 1895.] 





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