454 CULPIN : A POST-PERMIAN FAULT AT CUSWORTH. 
subsequently scooped. On the Edlington side, the bottom, or 
fossiliferous, beds of the Lower Limestone overlook L^pper 
Limestone strata still covered here and there with patches of 
Triassic sand. On the Cusworth side, the fossil-bearing beds 
are not exposed. 
Cos ct/or//} 
N 
Woo 
The Cuswoith fault is a continuation in post-Permian times 
of the northern of the two faults marked on the geological map 
as terminating in the Coal Measures near the junction of the 
rivers Don and Deame, below the Cadeby escarpment. This 
is confirmed by a cutting on the South Yorkshire Junction Railway 
