Vol. 67.] 



WEST, MID, AND EAST SOMERSET. 



67 



The Pteria-coiitorta Shales are very thin here, and the feeble 

 development of the usually-associated hard beds is at once notice- 

 able. There are no Sully Beds, but the Bone-Bed is particularly 

 rich in vertebrate remains, and reminds the observer very forcibly 

 of the 'thin' portion of the Lilliput Bone-Bed (Chipping Sodbury). 



The Westbury Beds are represented, and are easily separable from 

 the Langport Beds — the Cotham Marble being typically developed 

 and readily accessible. Mr. Woodward recorded its occurrence here, 

 but was unable to detect it in situ. The bed, however, is in its usual 

 position, and has the peculiarly tough clay-bed immediately above. 

 TExcept for the intervention of two more or less regular limestone- 

 beds, the rubbly deposits of the Langport Beds — crowded with 

 fossils — follow at once. Bubbly and more fossiliferous limestones 

 usually occur in the lower portion of the Langport Beds in East 

 Somerset north of the Mendip Hills, and in South Gloucestershire. 



There are no sections of the Khaetie in the neighbourhood of 

 Xilmersdon, other than those of the uppermost strata of the Langport 

 Beds in the Lias quarries. 



Foxcote railway-cutting. — In the railway -cutting north 

 of .Foxcote, some 3 miles up the line from Eadstock in the 

 direction of Bath, the Ithsetic was formerly exposed, and Mr. H. B. 

 Woodward assigned a thickness of about 6| feet to the Tea-green 

 Marls and 12 feet to the Pteria-contorta Shales (op, cit. p. 77). 



The Bhaetic Bone-Bed, pyritic and full of fish-remains, was 

 passed through in the sinking of the Dunkerton-Colliery shaft, 

 near Comerton, and certain of the beds were also displayed in the 

 ^railway-cutting immediately to the west. 



Cotham 

 Beds. 



Section in the Railway-Cutting- at Dunkerton Colliery 

 Thickness in feet inches. 

 Cotham Marble. Typical 



development, 



the bank, but 

 Marls, pale greenish 



yellow — 



Shales, black : seen 2 or 3 ") 



feet r 



Sandstones and shales, ") 



brown, micaceous, with > 



clayey shale-partings ) 



Thickness injee\ 

 C Cotham Marble. Typical^ 

 C l.< development. (Pieces on >■ 

 < (. the bank, but not in situ.) J 



(. 2 to C Marls, pale greenish - 



Westbury , 

 Beds. "1 



a C Pteria contorta 

 b i (Portl.). 



10 Fish-remains. 



Tea- 

 green < 

 Marls. 



Shales, black, laminated ... 



Shale, black, clayey 



B n e - B e d. Soft grit : r n 



Oto2 inches ) U 



Non-sequence. 



1. Clay, greenish, marly 



2. Clay, brown, marly 



9. f Two beds of hard, greenish 



5 



i{ 



Acrodus minimus Ag., 

 Grt/rolepisalbertiAg. } 

 Saurichthys acumi- 

 natus Ag. 



Red Marls. 



yellow, blue-centred marl- 

 stone 



g C Marls, brownish and green- 



' \ ish 



Marls, red 



10 



.Mr. H. B. Woodward has briefly noticed this section. 1 



1 ' Summary of Progress for 1907 ' Mem. Greol. Surv. 1908, pp. 155-56. 



f2 



