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Alderton Hill Quarry
Site of Special Scientific Interest
View to Alderton Hill - - 1481470.jpg
The location - Alderton Hill
Area of Search Gloucestershire
Coordinates 52°00′34″N 1°59′31″W / 52.009382°N 1.991941°W / 52.009382; -1.991941
Interest Geological
Area 0.34 hectare
Notification 1997

Alderton Hill Quarry is a 0.34-hectare (0.84-acre) geological Site of Special Scientific Interest in Gloucestershire, notified in 1997. It is a Geological Conservation Review (GCR) site.

Location and geology

The site is located on Alderton Hill to the south west of Dumbleton Wood, approximately 2 kilometres south west of Dumbleton village which is in north Gloucestershire.

The site is a significant location for research because of its well preserved Lower Jurassic insect fauna. There is a range of publications which detail the findings on this site, which include fossil insects. Particular findings are specimens of dragonflies (Gomphites) and a large cockroach. Fish remains have been found, and well-preserved cephalopods. The strata exposed are part of the Whitby Mudstone.

The discoveries are usually more complete than those from comparable localities. This is an important paleoentomological locality for research into the anatomy and evolution of early insect faunas.

The site is located in hedges which are species-rich. They include ash, oak, holly, hawthorn, hazel and spindle. The common blue butterfly is recorded.

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