Tyrone Group

rdf:langString Tyrone Group

rdf:langString Tyrone Group

rdf:langString Dartry Limestone, Glencar Limestone, Benbulben Shale, Mullaghmore Sandstone, Bundoran Shale, Ballyshannon Limestone, Clogher Valley and Ballyness formations

rdf:langString Courceyan to Asbian – Carboniferous)

rdf:langString Paleozoic

rdf:langString The Tyrone Group is a lithostratigraphical term coined to refer to a particular succession of rock strata which occur in Northern Ireland within the Visean Stage of the Carboniferous Period.It comprises a series of limestones, shales and sandstones which accumulated to a thickness of 2400m in the northwest Carboniferous basin of Ireland. The type areas for the group are the Clogher Valley of County Tyrone and the Fermanagh Highlands of nearby County Fermanagh. The rocks of the group sit unconformably on older rocks of the Shanmullagh Formation of the which are the local representatives of the Lower Old Red Sandstone. The top of the Dartry Limestone, the uppermost part of the group, is a disconformity, above which are the layered sandstones and shales of the Meenymore Formation of the Leitrim Group. The succession continues south and west across the border into the Republic of Ireland, though different names are typically applied.

rdf:langString sandstone, conglomerates, mudstone, shale

rdf:langString limestones