The Foundations of the Durham landscape: Key geological periods

The Foundations of the Durham landscape: Key geological periods

• Carboniferous (359-299 million yrs old)
• Permian (299 -252 million yrs old)
• Triassic   (252-201 million yrs old)
• Neogene/Quaternary (2.6-0 million yrs old)

Table: Key geological periods
https://www.bgs.ac.uk/discovering-geology/fossils-and-geological-time/geological-timechart/
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