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Sep 2010 - North Wales
Bayston Hill Quarry, Shrewsbury
Unconformity between the Precambrian and the Carboniferous overburden
Bayston Hill Quarry, Shrewsbury
Aggregates are derived from greywackes and conglomerates, which are part of the Bayston-Oakwood formation within the Wentnor series of the Longmyndian (late Precambrian)
Bayston Hill Quarry, Shrewsbury
Unconformity between the Precambrian and the Carboniferous overburden