316 



GEOLOGY OF THE ISLE OF WIGHT. 



Thickness. Depth 



Middle 

 Headon 



Beds 

 134 feet. 



Fine grey sand, with shells : 

 Cerithium concavuii\ (many), C. 

 trizonatum ?, Melania muricata, 

 Cyrena obovata, Potamomya 

 gregaria (? 2 vars.) Ostrea with 

 Serpula - - - 



Fiimi grey clayey sand with some 

 shells - . - . 



Fx. In. 



9 



4 6 



Ft. In. 



270 3 

 274 9 



This well was subsequently deepened to 437 feet, at which depth shelly- 

 sand occurred — perhaps representing the Headon Hill Sands — but no further 

 details can be obtained. 



WooTTON. In Beech Lane. 6 chains north of the Station. 



From specimens communicated by Mr. Newbury of Wootton, and notes 

 and specimens communicated by Mr. Brown of Tottenham. 

 Water at 370 feet, rose to 100 feet from surface. 



Lower 



Hamstead 



Beds about 



110 feet. 



Bembridge 



Marls about 



115 feet. 



Bembridge 

 Limestone. 



Osborne Beds 



about 117 



feet. 



Upper Headon 

 Beds 69 feet. 



Thickness. 



< 



Light-blue clay [no specimens] - 

 Clay [no specimens] about 



Dark-blue and carbonaceous clay, 

 full of fossils. Paludina lenta, 

 Hydrobia pupa, H. Chasteli, 

 Neritina tristis, Melania For- 

 hesii, M. muricata, Melanopsis 

 carinata,M. suhulata, Planorbis, 

 small sp., Cyrena semistriata, 

 Modiola Prestwichii 

 Clay .... 



Green clay &c. [specimens pre- 

 served are green clay at 114', 

 Cement stone and pyrites with 

 Paludina and Melania turri- 

 tissima at 140', Grey clay at 

 143', Green clay at 155', 160', 

 166', Green and black clay at 

 169', 170', Green clay at 175', 

 180', 185', Bright-green clay at 

 206'] 



/Limestone [Black clay and lime- 

 l stone at 208'.] - 

 f [Red clay at 254', Red and green 

 clay at 260', 265', 2T^', 285', 

 <( Bright-green clay at 290' and 

 ( 340', Red and green clav at 341' 

 I and 345'] 



fClav .... 



I Rock .... 



<( White sand, very sharp. [Very 



fine brown sand at 370'] 

 [_? [no record kept] 



< 



Feet. 

 40 



50 



5 

 15 



115 



117 

 11 



m 



34 



Depth. 



Feet. 

 40 

 90 



95 

 110 



225 



228 



345 

 356 

 359^ 



370 

 404 



The thicknesses are only approximate, as no complete record or series of 

 specimens is available. Another memorandum gives 385 feet to sand with 

 water, and a total depth of 420 feet. 



