Grace : iVoA's on Seciious in Gravels near Doncaster. 185 



Armthorpe, about 2 J miles N.E. of Doncaster. The section ex- 

 posed runs nearly north and south, and when first made showed 

 very clearly the current-bedding of the gravels. Taken as a 

 whole the appearance was that of an anticline, the northern part 

 of the section dipping to the north, and the southern part to the 

 south ; but, examined in greater detail, the individual beds did 

 not agree with this, especially in the case of the gravels. One 

 thick lenticulrr piece had a clear dip to the N.E., whereas a 

 little further away the dip became distinctly southward. Also 



'Pipe' in Gravel at Armthorpe. 



the beds of gravel and sand thin off and run into one another 

 so frequently that they cannot be very well separated. 



The clearest fact in connection with the exposed part of the 

 beds is that they, so far as can be seen, rest on a horizontal bed 

 of sand which is continuous the whole length of the section, but 

 does not appear to belong to the underlying Bunter Sandstone. 



The first photograph reproduced shows one of the lenticular 

 sections of gravel resting on the horizontal sand and covered by 

 another thinner bed of sand and more gravel. 



The second photograph shows, what may perhaps be regar- 

 ded as an incipient fault, or else as a pot hole, which runs the 



1906 June I. 



