442 



Jf^. W. King 4- W. J. Lewis— 



witli Lower Ludlow Shales below. The area is niucli faulted, hiding 

 part of the Upper Ludlow. 



At Saltwells (Fig. 2) less than 20 feet of the Upper Ludlow is 

 exposed north and south of the bridge over Messrs. Doulton's tramway. 



D*^ (?) 



Sandy Mudstones. 



Ludlow Bone-bed. 



Brown and green cal- 

 careous sandstones 

 with limy bands. 



Green calcareous sand- 

 stones with thin lime- 

 stone bands. 



Fig. 2. Section north and south of Tram Bridge, Saltwells. 

 Scale 8 feet = 1 inch. 



The lowest beds (D) are calcareous green sandstones, with thin 

 bands of limestone near the base. They are crowded, especially in 

 the limestone bands, witli CJwnetes striatella and minima and — 

 R. nucula. L. lata, Holopella ohsoleta, Orhiculoidea ruc/ata, Serpulites 

 lonqissimus, Cormdites serpularis, etc., also occur. 



For 5h- feet below the Ludlow Bone-bed occur shales, calcareous 

 sandstones, and flags, with a inore calcareous sandstone at the base, 

 which is lithologically like a zone of D'' at Downtou Castle Bridge, 

 namely, a white calcareous sandstone in the centre which weatliers to 

 a peculiar and distinctive reddish-brown sandstone, with Chonetes 

 striatella and minima, R. nucula (all very common), Orthonota 

 semisulcata, etc. 



The Bone-bed (D'^) varies from being 23 inches thick, most of 

 which is an impure limestone, to Bone-bed 4 inches, calcareous sand- 

 stone full of black material 9i inches, Bone-bed 1^ inclies. 



