Workers discover ancient coastline in West London
Engineers working on Britain’s new high speed railway have discovered an ancient, sub-tropical coastline dating back 56 million years.
The rare discovery was made at a site in Ruislip, West London, when HS2’s ground investigation team unearthed a previously unknown material, located up to 33 metres below the surface.
The layer of black clay, which HS2 Ltd has named the ‘Ruislip Bed,’ is thought to have been formed from densely wooded marshes on the edge of a sub-tropical sea. HS2 Ltd made the surprising find while investigating ground conditions in the area, prior to the construction of the Northolt Tunnel – a 14km tunnel which will run from West Ruislip to Old Oak Common.
https://www.heritagedaily.com/2018/03/workers-discover-ancient-coastline-in-west-london/118611
