Geology Site Account
Bulmer Brickworks, BULMER TYE, Braintree District, TL83293822, Potential Local Geological Site
London Clay (Harwich Formation) is worked here for making traditional, hand-made red bricks, mostly for the renovation of historic buildings. The sandy clay in the small pit contains a layer of claystone nodules and seams of volcanic ash. This is the only inland exposure of this horizon in the London Clay.
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