149 



Fig. 7. 

 Section of Pleistocene Loams and Gravels (Thames 

 Valley Deposits) at Erith ; shewing evidences of 

 contemporaneously puckered Loams alternating with 

 beds not disturbed. Scale 10 feet to an inch. 



as to obstruct, or to dam back, the water of the rivers flowing into 

 the North Sea and the English Channel. It is by the action of 

 floating ice in re-sorting and re-distributing the old surface waste 

 far and wide, at a time when our southern areas were flooded into 

 great lakes by the action of the glacial dams referred to, that I 

 would ascribe the origin of the Thames Valley Brickearths and 

 their associated flint gravels, with implements. I would go further 

 than this, and be inclined to regard the anomalous distribution of 

 the implementiferous gravels and loams of all the areas draining 

 into the English Channel as due directly or indirectly to the 

 action of either ice from the Scandinavian Ice-Sheet, or else from 

 its western analogue that came down St. George's Channel. These 

 implementiferous gravels would thus be, according to this view, 

 contemporaneous with the transportal of Shap Granite across 



