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Science In ActionA geological tour of London

A tour of some geological sites, and there’s not a mountain, river bed or quarry in sight

  • Roland and Dr Ruth Siddall looking at a geologically interesting building in East London
  • Parys Granite: this rock was impacted by a meteorite and black veins of melt can be seen cross-cutting it
  • The geological walk of London moves to the steps of St Paul’s Cathederal
  • Red Oland Limestone: The red limestone outside St Paul’s contains spectacular orthocone fossils
  • The geology of the coblestones outside St Paul’s alludes to the city's past
  • Rock used in Roman London, reused in medieval St Paul’s and finally found as a cobblestone
  • Thirty metres from the studio, the BBC is a geological site itself
  • Portland Stone, Roach: Fossils include oysters, portland screws and trigonid bivalves
  • Finishing in the pub, but the geology never stops
  • Larvikite: “London pub rock”, a striking black rock that can be found on almost every High Street in the UK

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