A. Somenriil — Base, of the Keiqjer in S. Devon. 461 



The principal object of my short paper is to show that the 

 Otterton breccias are not again brought up on the east side of 

 the Sid, or even on its west side at the fault at the Chit rock ; but 

 that they occupy a much lower horizon, and are separated from the 

 beds on the east side of the Sid by a great thickness of sandstones 

 seen between Otterton Point, Ladrum Bay, and the base oT High 

 Peak Hill. Still higher beds of these sandstones are even 

 continued farther to the west of the latter locality, until they are 

 overlain by the Keuper marls, just before reaching the fault. 



My object will be best obtained by a brief description of the 

 coast section between the Budleigh Salterton Pebble-bed and the 

 cliff on the east side of the river Sid. 



Immediately overlying the pebble-bed is a considerable thickness 

 of soft red sandstones terminating on the west side of Budleigh 

 Salterton. 



Near the Lifeboat Station these sandstones are overlain by 

 another series of sandstones containing breccias, and concretionary- 

 like masses of limestone which are continued to the east side of the 

 river Otter, where the breccias occur which Dr. Irving regards 

 as his Keuper basement series. 



From Otterton Point eastwards these breccias are overlain by 

 a series of red sandstones, which can be studied as a slowly 

 ascending series to Ladrum Bay, the base of High Peak Hill, and 

 further along the coast to within a little distance of the fault at the 

 Chit rock. 



Between the base of High Peak Hill and some little distance west 

 of the fault the red sandstones are strongly marked by current 

 bedding. The higher portions of these same sandstones are also 

 characterized by a nobbly or concretionary -like structure ; but the 

 term breccia, if applied to them, would, I think, be a misnomer. 

 Above these concretionary-like beds are other sandstones of only 

 a few feet in thickness, of a greyish- white colour, which at once 

 pass upwards into the true Keuper marls. 



It is highly important to note that it is the effect of the fault 

 at the Chit rock to bring up here, not the Otterton breccias, but the 

 higher portion of these current-bedded red sandstones ; so that the 

 fault is one of no great magnitude. The entire displacement,. 

 I think, is not more than 50 feet, if as much ; while the thickness 

 of the sandstones intervening between the Otterton breccias and the 

 line of fault, I would roughly estimate at 150 feet or more. 



At the section under dispute on the east side of the Sid, beds 

 still higher in the series occur. These beds consist of the 

 uppermost portion of the current-bedded and concretionary-like 

 sandstones, surmounted by the pale-grey sandstones of only a few 

 feet in thickness which are immediately overlain by the Keuper 

 marls. 



The whole thickness of the sandstones with the alleged included 

 breccia and underlying sandstone below the marls in the section 

 figured by Professor Hull ^ would not amount to more than 20 feet 



1 Quart. Joiirii. Geol. Soc, vol. xlviii, p. 66. 



