﻿Vol. 64.] THE FOSSILirEEOUS SILUKIAN KOCKS OF TORTVVOETH. 525 



In the field to the south of the southern end of Cromhall Lane 

 there is a large swallet, and some bushy depressions which probabl}' 

 mark others. These are on the line of strike of two thin lime- 

 stone-bands, which are shown in Sanders's map in the fields east of 

 Brinkmarsh Lane near Highwood. No trace is now to be seen 

 of these bands, but the presence of the swallet is suggestive of their 

 existence. 



(b) The Whitfield and Palfield areas. — We pass now 

 to the description of the main Wenlock outcrop. The lower of 

 the two limestone-bands is decidedly the better exposed and the 

 more fossiliferous. 



Commencing at the southern end, it is first seen in the old 

 Brinkmarsh Quarry at Whitfield, to the west of Brinkmarsh Lane ; 

 and at another old quarry near Rifle Cottage, to the east of the 

 lane. It is in these two quarries, and especially in the western one, 

 that the great majority of the Wenlock fossils labelled ' Whitfield ' 

 in the older collections have been found. 



Weaver ^ describes in detail the section at Brinkmarsh Quarry, 

 but for many years it has been so much overgrown that little could 

 be seen. Recently, however, part of the southern side of the quarry 

 was opened up, and the following section was obtained : — 



Thickness in feet inches. 

 (8) Red clay crowded with fossils, especially Hallia 



mitrat a a,nd. Oi^this hasalis 1 6 



(7) Celestine-band 1 



(6) Earthy limestone 1 



(5) Celestine-band 1^ 



(4) Thinly-bedded sandy limestone, with grit-bands 



and shaly partings 3 



(3) Lenticular band of celestine (maximum thickness) . 3 



(2) Thinly-bedded sandstone and shale 4 



(1) Thickly-bedded sandy limestone, with some more 



gritty bands 4 



10 U 



At a point about 40 yards east of this section another part of the 

 quarry-face was cleared, and yielded the following section : — 



Thickness in feet inches. 



(3) Eubbly limestone 2 



(2) Red clay, with a little rubbly limestone ; the lower 

 beds are crowded with Hallia mitrata and Orthis 



basalis 10 



(1) Sandy limestone 1 6 



13 6 



Band 8 in the previous section is clearly the lower part of Band 2 

 in this section. 



1 Trans. Geol. Soc. ser. 2, vol. i, pt. ii (1824) p. 337 ; Weaver's description 

 is quoted in the Geological- Survey Memoir on the East Somerset k Bristol 

 Coalfields, 1876, p. 11. 



2is2 



