1863.] 



HOLL INFERIOR OOLITE. 



309 



^ 



o 

 O 



o 



■Si 



o 



"S 





Cb 



Bath and Dundry.. 



S Doddington Park. 

 •2 Cross Hands Inn. 



§ Horton. 



Q 



Avening. 



Nailsworth 



Rodboro' Hill. 



Stroud 



Sporebed Hill 



Painswick. — 



Leckhampton. 

 Cheltenham. 



Cleeve. 



V& 



dotting Hill. 



VOL. XIX. 



3 



^3 



Pn 



tf 



PART I. 



seen separated from uptilted Car- 

 boniferous strata by alternate 

 layers of more or less compacted 

 clay, with pebbly bands, resting 

 on a bed of conglomerate, beneath, 

 which Mr. C. Moore, of Bath, de- 

 tected a thin stratum containing 

 Avicula contorta *. 



North side of the Mendrps. — Be- 

 tween the Mendips and the valley 

 of the Avon the same beds continue 

 to represent the Inferior Oolite, 

 and are well exposed in the rail- 

 way-cuttings between Wells and 

 Ammersdown, and, in a series of 

 roadside-quarries, on to Radstoke, 

 and further north, by the side of 

 the canal near Dunkerton, at the 

 foot of the Viaduct Bridge near 

 Limpley Stoke, and at Widcombe 

 Hill, near Bath. In all these lo- 

 calities they continue to preserve 

 those general features which serve 

 to distinguish the one from the 

 other. In the neighbourhood of 

 Dunkerton the Upper Bagstone is 

 about 20 feet in thickness, and 

 contains Corals of the genera Ana- 

 bacia, Stylina, and Isastrcea. 



The outlying patch of Inferior 

 Oolite at Dundry Hill is connected 

 with this portion of the main body 

 of the range by the smaller patches 

 of the Barrow Hills, Stanton Prior, 

 and Timsbury. At Dundry the 

 light-coloured, partly flaggy, partly 

 thick-bedded oolite which caps 

 the hill belongs to the upper sub- 

 division, and in certain layers at 

 the top of the hill contains Corals 

 of the same genera and species as 

 the similarly situated beds in the 

 neighbourhood of Dunkerton and 

 Bath. Beneath this we find beds 

 of rubbly and ferruginous lime- 



* This interesting section has been 

 given in detail in Mr. T. R. Jones's re- 

 cent Monograph of Fossil Estherice 

 (p. 74), published by the Palseontogra- 

 phical Society. 



