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Slatmore Quarry, ClogherTyrone
PHOTO TO BE ADDED Slatmore Quarry, Clogher, Co. Tyrone.
Summary Full report
Site Type: Quarry (disused)
Site Status: PASSI
District: Dungannon District Council
Grid Reference: H505482
Rocks
Rock Age: Carboniferous (Arundian, Visean)
Rock Name: Ballyshannon Limestone Formation, Tyrone Group
Rock Type: Limestone, Shale
Interest
Minerals: Calcite
Fossil Groups: Coral
Other interest: breccia, fault, joints, net veins, slickensides, Marine sediments

Summary of site:

This abandoned quarry is of interest because it exposes the most easterly outcrop of the Ballyshannon Limestone Formation in Northern Ireland. The rocks here, mostly pure to silty limestones with some shales, are close to a major fault zone and fault planes with movement striations (slickensides) brecciation (shattering into angular pieces) and intense fracturing have created cavities that have since been obliterated by the mineral calcite. All the limestones have been recrystallized by the structural disturbance and although fossils are sparse, corals have been identified that give an Arundian age, about 345 million years ago, towards the middle of the early Carboniferous.


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