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Portland limestone

The Cenotaph, in Whitehall, London, is made from Portland stone.
Portland Stone quarry on the Isle of Portland
Seafarer's Sculpture by Michael Dan Archer. It has 108 pilars in Portland stone. Portishead marina, Somerset

Portland limestone is a limestone which was deposited in the latest stage of the Upper Jurassic period. It was first found on the Isle of Portland, Dorset.[1] However, it occurs over a much wider area, including France.

The strata are beds of white-grey limestone separated by beds of chert.

  1. West, Ian 2012. Ian West's website on the Jurassic Coast and more. Includes the Isle of Portland and its surrounds. Soton.ac.uk

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