39 



of Lime (selenite), being really Selenitic Ammonites: few fossils 

 occm- throughout the series. Owing to the inaccessibihty of the 

 cliff at St. Audrey's, the Angulatus and Bucklandi Beds could not 

 be examined, but at least 50 feet are exposed, they are however 

 repeated to the east in the great cliff section at Quantocks head 

 and are nearly 100 feet thick ; corresponding almost bed for bed 

 with the opposite cliff sections, along the Glamorganshire coast, 

 from Diuiraven to St. Donnats, Porthkerry, and on to Lavernock. 

 The St. Audrey's slip Rhsetic series, therefore measured at right 

 angles to their dip, from the top of the New Eed Marls to the 

 top of the White Lias equals 145 feet, the Ostrea and Planorbis 

 series, 44 feet, and the Bucklandi beds 50 to 70 feet, making 

 a total of about 250 feet. We thus get in the Cliff section at 

 St. Audrey's the equivalents of the two Ehsetic series that 

 occur at Watchett, one on the eastern side of the Harbour, the 

 other on the western, both of which owing to their position are 

 covered at high water, and the beds stand nearly vertical. Fish 

 remains are abundant in the Watchett sections, with a large 

 and characteristic Ehsetic Fauna, also immediately, south of 

 the town in the Railway Cutting at St. Decumans, and in the line 

 of fault a fine section of the Rhsetic beds are exposed, the whole 

 aeen being 76 feet in thickness, from the Earthy Limestones 

 above the Pecten Valoniensis bed, to the Sandy Shales and Marls 

 measuring 15 feet and containing many fossils. The lowest 

 beds seen are Grey Marls, which weather brown, the whole of 

 the lower beds of this series are highly calcareous, dense, and 

 chrystalline, and rich in those forms common to the Rhsetic Zone. 



At Little Stoke, section I, the Ehsetic beds are developed 

 with great distinctness, the Black Shales (A.) and underlying 

 Marls (B.) having a marked contrast with the overlying White 

 Lias (C.) and Planorbis beds, (D.) the whole is much faulted, 

 being downthrows to the west. The thickness of the series 

 at Little Stoke is about 80 feet, namely Variegated and Tea 

 Green Marls 50 feet. Black Shales 20 feet, and White Lias 10 ft. 



The parallel east and west faults which determine the position 

 of the Ehsetic Series at Watchett, are a marked feature along 

 the shore, especially near the Harbour, the southern fault is 

 D 2 



