1 1 2 Preston : Lincolnshire Naturalists nt Scunthorpe. 



N.N.E. — S.S.W. direction; its hade is towards the south at 

 an angle of 70° ; the displaced beds are well seen, and the 

 throw of 6 feet easily measured. On the E. side of the pit 

 the bottom wall of the fault was bared for 6 or 8 feet in width, 

 and the whole surface was seen to be beautifully slickensided. 

 A most interesting- point about the fault was the fact that the 

 upthrow side had not been planed off level at the surface with 

 the downthrow side as is usually the case, but projects about 

 5 feet above it. This suggests that the fault is of comparatively 

 recent formation ; that it is caused by the sinking of the down- 

 throw side ; and that the surface has been gradually filled in 

 with eluvium or wind-drift of the usual character (blown sand, 

 etc.), so as to keep the land surface level. 



In further illustration of the manner in which the ironstone 

 is here faulted, the remains of an overthrust or reversed fault 

 were visited. Its chief characteristics had been removed by 

 working the stone, but from a photograph lent by Mr. John 

 Long, of Scunthorpe, we take the interesting illustration. 



The bed 'a' marks the lower limit of the worked ironstone, 

 the blue stone coming below this being worked only for special 

 purposes. The 'clay' which has been thrust up is the 'blue 

 shales ' which comes immediately beneath the ironstone bed. 



From this place it was intended to visit what is locally 

 known as the ' Sunk Church,' a geological feature in the near 

 neighbourhood, but the weather won the day, and the rain- 

 saturated party reluctantly left this most interesting formation 

 for a future visit. 



Naturalist, 



