484 J. E. JIAEE Aim T. EOBEETS OX THE 



Nortli of Stoneyford, the beds of this stage are also seen in the 

 southern limb of a small synclinal, the lower beds of which are 

 apparently absent, owing to a slight dislocation. 



To the east of this, the same beds are found occupjing the more 

 central part of the synclinal north of Llandewi Yelfrj-. 



7. Conglomerate Series. — Xear the centre of the complex syn- 

 clinal, and in the centres of the minor synclinals of Eobeston 

 Wathen, Penblewin, and to the north of Llandewi Yelfry, a coarse 

 conglomerate is found with pebbles of vein quartz, and other 

 materials of distant origin, succeeded by a coarse quartzose grit. 



To the west, this grit appears to be first met with in the railway- 

 cutting south of Sholeshook, where it is faulted in against older 

 beds on the north. To the east of this, it is seen near Mary- 

 borough, dipping north at alow angle. From here it runs eastward 

 along a ridge to Piston TTood. In a quarry south-west of Yalley 

 Farm, green-banded mudstones, with beds of quartz-grit, possibly 

 belonging to this series, are found. On the north side of the 

 quarry they dip at a very low angle to the north, whilst on the 

 south' side they are vertical. This appears to be due to a sudden 

 bend rather than to a fault. To the west of Wiston Wood, the 

 conglomerate is exposed in a quarry in a field. It is here nearly 

 vertical, but dips slightly north, and, according to the strike, would 

 pass beneath the beds of the last-mentioned quarry. 



Another ridge of grit runs to the north of this one, also in a 

 general east and west direction. It is seen faulted against Trhiu- 

 cleus-seticornis shales, in the railway-cutting, west of Wiston Mill. 

 Proceeding in an easterly direction, we again find it exposed on the 

 ridge ^ mile S. of " o '' in " Dallaston ; " it is here much disturbed. 

 It appears to be continued along this ridge to Wiston. In a quarry 

 south of Church Hill, near this village, a very coarse grit is found, 

 dipping south. Wherever exposed, the grit of this ridge appears to 

 overlie or be faulted against beds of the Slade stage. 



A third grit-ridge runs parallel to these, and to the south of 

 them. Grit is found, apparently overlying green shales, in a road- 

 cutting west of Slebech Xew Church. In a quarry south of Clerken 

 HiU, east of the last place, conglomerate is exposed, dipping north. 



At Eobeston Wathen the conglomerate is many feet thick, and 

 occupies the centre of the s}-nclinal shown in fig. 3. In each limb 

 of the synclinal it rests upon the representatives of the Slade beds, 

 containing Trinudeus. 



A patch of grit is seen in a quarry south of " Camp," 1| mile 

 north-east of Eobeston Wathen. The relations of this to the sur- 

 rounding beds are somewhat obscure, as the tract of country between 

 the limestones of Eobeston Wathen and Grondre is, as already 

 stated, much broken. 



Another ridge runs from near Penblewin eastward. Here the 

 conglomerate is found in a quarry west of Carmine, dipping north 

 at an angle of 20° and succeeded by coarse grit. It rests upon the 

 representatives of the Slade beds which occur at the cross roads at 

 Penbelwin. 



