Great Quarry, Swindon (grid reference SU151836) is a 0.994 hectare geological Site of Special Scientific Interest (SSSI) in Wiltshire, England, notified in 1951.
"It has long been famous for the richness of its molluscan faunas from the marine Swindon Roach.
These beds, of Portlandian age, comprise a suite of sediments ranging in their depositional environment from freshwater and hypersaline lagoons to true marine shell beds and soil profiles.
The channelled form and erosive pebbly bases which characterise the majority of the beds in this succession and the variety of environments exhibited make this by far the most complex Jurassic section in Britain."
This article about a Site of Special Scientific Interest in England is a stub.