1868.] HOLL SOUTH DEVON AND EAST CORNWALL. 413 



well. These beds rest unconformably on the older rocks, as noticed 

 by Mr. Godwin-Austen*", who found at their base a conglomerate of 

 rounded pebbles of quartz with angular fragments of the subjacent 

 limestones f. Through these Carbonaceous slates and grits the 

 limestone of Connator forms a protrusion, and on the east they 

 are brought against the argillaceous slates of the Totnes turnpike- 

 road (which underlie the limestones) by a north and south fault, 

 with downthrow on the side towards Ogwell J. 



Crossing over to the other side of the Bovey deposits, we find 

 precisely similar Carbonaceous slates and grits, occupying the country 

 north of the Kingsteignton limestone, overlain by Triassic conglo- 

 merate on the east, and by the Greensand and Bovey deposits on 

 the west. Through these slates and grits, the limestone of King- 

 steignton, Orchard Well, Ugbrook Park, &c. forms protrusions, the 

 Carbonaceous rocks occupying the hollows between them. The 

 slates south of the Kingsteignton limestone, much of which is purple 

 or claret-coloured, belong to the Devonian system. They appear to 

 rise from under the limestone and associated igneous rocks, which 

 latter have altered them at the line of contact ; and they occupy both 

 shores of the estuary between Bishopsteignton and the Bovey beds 

 of Newton. 



North of Ugbrook Park there is a long curved strip of the older 

 limestone, containing Devonian fossils, which appears to be faulted 

 up, as the strike of this limestone is oblique to that of the Culm- 

 measures, which occupy lower ground. At Waddon Barton this 

 limestone is overlain by hard slates full of Goniatites and Posidono- 

 myce, above which are the typical Carbonaceous sandstones quarried 

 at Ugbrook Park. Purplish and grey slates, with calcareous concre- 

 tions, underlie this limestone, and are exposed in the hamlet of 

 Waddon, where they are clearly seen to dip under the limestone. 

 Beyond these, nearly midway between the cottages and the Chud 

 Brook, there is an off-standing knoll of shattered limestone, which 

 appears to be on a line of fault. The low ground through which the 

 Chud Brook flows is partly occupied by alluvium ; but we learn from 

 Mr. Godwin-Austen that a well-sinking, which was formerly made 

 here, passed through 15 feet of perfectly horizontal carbonaceous slate 

 and sandstone resting on highly inclined slates, similar to those seen 

 beneath the limestone at Waddon, and dipping in the same direc- 

 tion§. The section (fig. 2, p. 409) taken across the beds at Waddon 

 Barton in a south-easterly direction, will serve to show the general 

 structure of the country. 



Northward of Chudleigh the Culm-measures undulate towards 



* G-eology of the S.E, of Devonshire, Trans. G-eol, Soc. vol. vi. 2nd ser. p. 457. 



t L. c. supra, p. 458. 



\ Sir Henry De la Beche appears to have considered this fault an upcast on 

 the east {vide Rep. p. 111). On the contrary, it appeared to me that this small 

 patch of Carbonaceous rocks has been preserved where it is by having been 

 brought down below the general level of the country, and so escaped denudation. 

 The bedding of the Connator limestone appears to be vertical ; but it may have 

 been brought into that position before the Culm-measures were deposited. 



§ L. r. p. 4f)0. 



