104 THE TRENTHAM GRAVEL BEDS. 



about 500 feet. It has been considered questionable if 

 the Lower mottled sandstones occur in this neighbourhood, 

 but on the east or opposite side of the hill in which the 

 quarry is situated may be seen a series of variegated soft 

 sandstones which I think not unlikely to be members of 

 those beds. 



Now it is a point of no inconsiderable interest that 

 almost within the distance of a stone's-throw from the 

 place where we now stand there exist at the surface 

 members of each of the different formations described 

 above. Rising to the north-west are the Hanchurch hills, 

 consisting of the yellow sandstones, shales, limestones, iron- 

 stones, and thin coal seams of the Upper Coal Measures. 

 On the east and west, at a much lower level, occur the 

 dull brown and chocolate sandstones and breccias of the 

 Permian group, and upon these rests the base of the ele- 

 vated and isolated ridge of Bunters which form the sub- 

 ject of our examination. The Hanchurch Coal Measures, 

 which occupy higher ground than the park hill, of which 

 the Bunter is composed, are brought in by a fault of 

 1,000 feet upthrow, and their position therefore tells us 

 plainly enough that even in connection with the sur- 

 rounding strata of a higher geological horizon, which 

 of course by no means represents the actual results 

 of the operation, at least 1,000 feet of the Permian 

 and New Red beds by which they were at one time 

 covered have been removed at this particular point 

 by denudation. With regard to the fossils of these Coal 

 Measures, I may remark that they have yielded some 

 excellent specimens of plants, and I have collected from 

 the limestone beds and shales Spirorbis carbonarius, some 

 species of Cythere, and several specimens of the genus 

 Anthracomya. 



