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• 11:39, 22 September 2020 Scotfot talk contribs created page File:P805346.jpg (Northwood Company's Buck pit. Section in lower part of London Clay. Excursion to Northwood and Croxley Green, July 24th 1909. Added note: Floor of pit, tenacious marly clay 2 ft thick forming the top of the Reading Beds and passing into mottled clay below; Sandy clay Basement bed, calcareous with many fossiliferous nodules, 5ft 6 inches thick; Pebble Bed; London Clay 3 ft. [Bottom to top.]. BGS image P805346.)