#portlandstone — Public Fediverse posts

The joys of 'urban geology': How to find fossils (and other discoveries) in your city's buildings.

If you look closer at the building stones, tiles and pavements of the big city, you can find a hidden world of geology and history, from fascinating fossils to unusual rocks.

https://mediafaro.org/article/20251017-the-joys-of-urban-geology-how-to-find-fossils-and-other-discoveries-in-your-citys-buildings?mf_channel=mastodon&action=forward

#UrbanGeology #Geology #Fossils #Rocks #Cities #PortlandStone #UrbanExploring #London

1 across: A red alga playing bridge.

Or at least, the fossil of one - Solenopora - in the Jurassic #PortlandStone parapet of Waterloo Bridge, London.

#FossilFriday #Palaeobotany #UrbanFossils @LondonGeology

You've got to love Roach Stone - it's a facies (variety) of the famous Portland Stone (a Jurassic limestone) that many of the public buildings in London are built from. Christopher Wren made Portland Stone famous when he used it to build the new St Paul's Cathedral in London after the Great Fire. OK, so he had shares in the quarry...

The stone is full of fossil shells - the pointy ones are the famous 'Portland Screws'.

#Geology #UrbanGeology #Limestone #PortlandStone #RoachStone #Jurassic #ChristopherWren #FossilFriday