Celebrating 150 Years of Brickmaking W.H.Collier Ltd.

The Site

The clay used for brickmaking here at W H Collier Ltd is a glacial/alluvial lacustrine deposit formed in lake basin by sub-glacial water during the most recent ice age. Deposits were laid down over a 20,000 year period from meltwaters, during the interglacial period, entering the basin. The seam of clay found here is also known as London clay.

The clay pit is important geologically and is protected as a Site of Special Scientific Interest.  It is one of the only sites of its kind in europe where lake sediments have revealed distict layers containing fossil pollen, revealing a detailed record of the vegetation living throughout the Hoxnian intergalacial period.