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Countryside Council for Wales
Landscape & wildlife Please note - A new body, Natural Resources Wales has taken over all functions and services previously carried out by Countryside Council for Wales. While the Natural Resources Wales website continues to be developed, some online services will continue to be provided on this web site.

Garth Bank Quarry

The rocks in this quarry are siltstones and pebbly sandstones of late Ordovician and early Silurian age, approximately 440 to 445 million years old. The rocks provide an insight into the environmental conditions at the boundary between the Ordovician and Silurian Periods. The oldest rocks in the quarry comprise late Ordovician siltstones. These contain fossilised remains of brachiopods, a marine sea-shell. After a break in deposition these siltstones are overlain by pebbly, rippled sandstones which range from very late Ordovician to Silurian in age.

Garth Bank Quarry SSSI aerial photo

©Infoterra Ltd 2010

Managing this site

The site is owned by the Forestry Commission and a private owner. The special features of this SSSI and CCW’s views about site management have been summarised in a Site Management Statement, addressed to the owners and managers of the land. The statement can be found in the resource section below.

Access information

The site is designated CROW open access land. For detailed maps and information regarding access visit our access map via the resource section below.

Other information

Garth means ‘mountain-ridge, promontory, hill’ (garth).

Resources

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Access map

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Email address
Postal address
The landscapes team [SSSI]
C/O Enquiries
CCW
Maes-y-Ffynnon
Penrhosgarnedd
Bangor
Gwynedd
LL57 2DW
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0845 1306229
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