108 



CONGLOMERATES OF THE LOWER SEVERN BASIN. [Feb. 1 899. 



preponderant, that this zone cannot be separated from the marls 

 above and below. 



The highest exposed zone of marls can be seen east of Church 

 Gorse, near Enville, where they contain a bed of sandstone. The 

 band D^ is broadest about a mile south of Bobbington village, where 

 the Lower Bunter Sandstones rest upon it. 



A bore-hole put down | mile north-east of Bobbington showed 

 that the Permian (D) passed through there agrees with the fore- 

 going descriptions. Therefore, in the Enville district : — 



(i) The calcareous bands A\ B^, & C^ retain their calcareous 

 character throughout. 



(ii) The calcareous band B^ changes from conglomerate to thick 

 calcareous sandstone, when followed to the north-north- 

 west. 



(iii) The sandstones and marls, A^ & B^, change correspondingly 

 in the same direction, from beds partly composed of marl 

 to thick layers almost wholly consisting of sandstone. 



(iv) The Middle Permian at the south-eastern end of the 

 district is comparatively thin. Possibly the upper part of 

 C^ has been denuded, and has contributed the rolled frag- 

 ments of limestone occasionally found in the Upper Permian 

 breccias hereabouts, 

 (v) Bands A\ B^, & C^ become thicker in a northerly direction, 

 while A^ & B^ attain their greatest development about the 

 centre of the district, but at the two extremities they are 

 of equal thickness. 



(vi) The marls, C^, become thinner in the same direction as that 

 in which the sandy beds below become thicker. 



(vii) The trappoid breccia D^ decreases very considerably in 

 coarseness and thickness, when followed in a north-westerly 

 direction. The sandstones and marls (D^) which overlie 

 these breccias, and are also interstratified with them, corre- 

 spondingly increase in thickness to the north-north- 

 west ; but the whole group D, considered collectively, in 

 this direction becomes much thinner, 

 (viii) The trappoid breccia also decreases in coarseness in a 

 vertical direction at any given locality, and insensibly 

 passes upward into sandstones and marls. 



The accompanying table (I) and the restored section (p 

 107) illustrate the varying thickness and general characters of the 

 Middle and Upper Permian Series of the Enville district. 



la. The Bowhills District. (PI. XI & Table II, p. 109.) 



Band A^ is, for the first mile to the south, a calcareous and 

 slightly pebbly sandstone. Near Dodd's Barn (see Map, PI. XI) 

 7 feet of it is sandstone and 13 feet conglomerate. In the latter I saw 

 99 pebbles between 3 and 4 inches long, and one measuring 7 inches. 



