Vol. 67.] 



WEST, MID, AND EAST SOMERSET. 



49 



near the top is the 25-inch bed which comes above the ' yellow-bed 

 horizon' (65). Following the excavation in the direction of the dip, 

 we come upon the Insect and Crustacean Beds, then the Saurian 

 Beds and all the deposits up to Bed 122, which, as at Camel-Hill 

 Quarry, breaks up into peculiar little oblong pieces. 



(C) The Somerton-Langport Area. 



(i) Introduction.— The principal section in the area is in the 

 railway-cutting south-west of the Union at Langport, and will be 

 considered first. It has been very briefly noticed by Mr. H. B. 

 Woodward. 1 



(ii) Stratigraphical Details. 



Langport railway-cutting. — In the approach to Langport 

 Station greenish marls with pinkish zones, reminiscent of the Laver- 

 nock section, near Cardiff, are exposed. 



From the Station to half-way between the first and second bridges 

 similar greenish marls, but with harder white zones, are exposed. 

 At the first bridge these are capped with gravel, composed mainly 

 of well-rolled fragments of the white limestones of the Langport 

 Beds : while south of the second bridge is the following section : — 

 Railway-Cutting Section, Langport. 



Thickness in feet inches. 



Limestone, white — 



Marl 2 



Limestone, white 1 



Marl 3 



Limestone, white If 



f31. 

 32. 

 33. 



34. 

 35. 

 36. 

 37. 



Ostrea liassica Strickl. 



Marl 



Grammatodon 

 Moore. 



lycetti 



Limestone, white 



P 



,, C Marl and limestone, with a 2-inch layer of") n 

 6 ^l clay on the top ) 



39. Limestone, white, in two layers 



40. Marl, indurated in places 



o 1 41. Limestone, white 



42. Marl and rubble 



43. Limestone, white 



44. Marl and rubble 



._ C Limestone, massive, white 



4o - 1 Marl and rubble 



46. Limestone, massive, white 1 



47. Marl 



48. Limestone, rubbly 



49. Marl ■ 



1^50. Limestone, greyish-white, rubbly 



Shale, bluish-grey & brown, clayej\ 

 . Cotham Marble 



( Shales, bluish-gre.y, with thin layer 

 ' ( of 'beef 



( Limestone, hard, bluish-grey : 4 to 8 ") 

 ' ( inches ) 



C Marl, bluish-grey and pale yellow 



\ indurated in places 



{Limestone, hard, bluish-grey and} 

 yellowish, with a layer of ' beef ' > 

 immediately below it J 



(3) Marl, pale greenish-grey, sandy 



7 



41 C G-ervillia precursor Qu.. 



3 J Plagiostoma valoniense 



4 I (Defr.), Dimyodon intus- 

 9i L striatus (Emmerich). 



11 Protocardia(mtevnal cast). 

 3 



2 Ciypts of Lithojphagus. 

 2 



4 Ostrea liassica. 



Seen 8 3 



2 

 2 



5 Ostracoda at the top. 



u\ 



(1) 



10 



1 ' Summary of Progress for 1904' Mem. Geol. Surv. 1905, pp. 163-68. 

 Q. J. G. S. No. 265. e 



