206 
FAULTING IN BOULDER CLAY AT DIMLINGTON, 
E. YORKS. 
GEORGE SHEPPARD, F.G.S. 
While on a visit to the Basement Clay at Dimlington a 
few weeks ago, my attention was called to an interesting 
section which appeared in the lower part of the exposure. 
The clay itself was of the usual dark type, plentifully charged 
with chalk boulders, many of which had been crushed into 
Photo by] 
Fault in Glacial Drift. 
[£. A. Tcalt. 
long white bands rendered all the more conspicuous by the 
black background of the clay. One of these boulders in 
particular, had been extended to a length of fully fifteen feet, 
and then it had been secondarily faulted in a distinct manner. 
The maximum thickness of the chalk layer was six inches, 
and, as can be seen from the photograph, a typical trough 
fault had been formed. The major fault, on the right hand 
side, exhibits a minute faidt-breccia along the plane of dis- 
location. Presumably the faulting would take place while 
the whole mass was frozen. 
Naturalist, 
