566 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [JllllC 20] 



pebbles, and ironstone-nodules cemented pretty firmly together, and 

 passing np into fine yellow sand, laminated and well bedded, and this 

 again covered by the gravelly loam which lies indifferently npon chalk 

 or sand. The chalk is fissured, rises in little craggy prominences into 

 the drift (6), or shows steep short escarpments against which the 

 chalk-rubble has accumulated. I saw it in this form at Herting- 

 fordbury a few weeks back. 



However, we have only to return to the station, and enter the 

 bay in the cliff where the lime-kilns are at work, to see the accom- 

 panying section. South of the gravel-shoot, the chalk descends 

 rapidly, dipping N. or N.W. to within 10 feet of the road-level, and 

 is much shattered in the hollow. The fine gravelly sand, underlain 

 by 2 or 3 feet of conglomerate, follows it; and then, just under 

 the shoot (which seems put there to protect the section), it is suddenly 

 faulted to the extent of at least 7 feet, and probably more, showing 

 the clean face of a fault which has cut through chalk, chalk- and 

 flint-pebbles, and gravelly drift, the faces of the faults, three or four 

 in number, and parallel to each other, being as clearly defined in the 

 hard drift and conglomerate bed (the pebbles of which are often 

 fractured across) as in the chalk itself. The loam and chalk-rubble 

 mixed descend irregularly into the hollow, and leave generally but 

 a foot or two of undenuded gravel- drift above the conglomerate. 



Section of ChaVc, Drift, and Upper Gravels at Hitcinn Station. 



a. Chalk. 



b. Drift. 



c. Pebble-bed. 



d. Fine gravelly sand. 



The section here is so very clear as to admit of no doubt ; and I 

 leave the matter for the consideration of those who are apt to forget 

 that faults in the drift imply a very recent modification of the surface 

 by movements similar in kind, if in less degree, to those which produced 



