312 



GEOLOGY OF THE ISLE OF WIGHT. 



Thickness, 



Brownish-grey sand and stratified 

 clay with iron pyrites - 



Brownish-grey clay, occasionaUy 

 stratified and with vegetable 

 impressions and plant remains 



Clean sharp light-grey (almost 

 white) siliceous sand. No 

 fossils - . - - 



Feet. 



2i 



2i 



Depth. 

 Feet. 

 560 



567 

 569i 



Spithead Defences — Noman Fort. 



Communicated by Major E. A. Hewitt, R.E,., to H. W. Bristow. The 

 fossils determined by Mr. Etheridge. 



Surface of shoal 34 feet below high-water. Measurements from Powder 

 Magazine floor, 31 feet above High-water. 



Thickness. 



Recent 



Marine 



Deposits. 



i 



Bracklesham 

 Beds, 



Water &c. to surface of shoal 



Hard compact flint shingle, bright^ 

 sand, chalk stones, Isle of Wight j 

 stone, shells &c. Jaw of Red I 

 Deer fifty feet down. Large flint 

 shingle, fine pale-yellow sand, \ 

 shells, &c. - - - j 



Fine flint-shingle, coarse angular 

 pale-yellow sand- Remains of 

 trees, shells, &c. Nassa reticulata, \ 

 Trochus ziziphinus - -J 



"Grey sand with slight clay and 

 occasional flint shingle, shells, &c. 



Greenish-grey sandy clay. No fossils 



Green-grey clay, fossils. Cardita 

 acuticosfa, Astarte, Cytherea, 

 Ostrea tenera 1 fragments 



Green-grey clay, fossils numerous. 

 Indurated phosphatic nodules with 

 PlicatulcB - - - - 



Green-grey clay, rather more sand, 

 fossils . - - - 



Brown-grey clay, fossils. Conns, 

 Turritella sulcifera, in sandy clay 



Brown-grey clay, slight sand, fossils. 

 Pinna margaritacea, Corbula, Tur- 

 ritella sulcifera, Nummulites vario- 

 larius, Serpula at 502 feet from 

 surface ; at 506, Cardium semi- 

 granulatum ; at 510 Pecten corneus, 

 Cytherea suberycinoides, Cardium 

 semigranulatum . . . 



Darker green-grey sandy clay 



Hard grey-green sandstone rock, 

 numerous fossils. Cardium semi- 

 granulatum, Cytherea suberyci- 

 noides, Cardita planicosta, Tur- 

 ritella, Fusus ... 



Pale green-grey sand, numerous 

 fossils. Cardita planicosta, Tur- 

 ritella sulcifera, Seraphs, sp., 

 Cardium semigranulatum,, Pectun- 

 culus pulvinatus - . - 



90 



28 

 111 



130 



43i 

 100 

 25i 



47 

 27 



Depth. 



Feet. 



37i 



1274 



155* 

 I67i 



297k 



3404 

 4404 

 466 



513 

 540 



541 



550 



