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Regional Geography and Scenery Geological outline Soils and Agriculture History of Research
Problem areas along the Highland Border Lough Derg Psamrnites Igneous and Metamorphic Complex of Central Tyrone Dalradian Assemblage Stru...
Ordovician Volcanic Rocks of Tyrone Upper Ordovician and Silurian
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Antrim plateau Ballycastle basalt lavas Belfast Borehole Caledonian Carboniferous Carboniferous rocks Carlingford Carrickmore Chalk clays Coal Coalisland complex conglomerate Cretaceous Dalradian Dalradian rocks deposits dolerite Donegal dykes east erosion exposed facies Fault fauna Fermanagh ﬁrst ﬂank ﬂint ﬂows folding formed fossils Geol Geology glacial granite granophyre greywacke grits Highland Border Hill ice-sheet igneous intrusion Irish Acad Irish Nat known Larne laterite lavas Lias lignite Limestone Londonderry Lough Neagh Lower Basalt magma marls metamorphic rocks metres Moinian mudstones Namurian north Antrim north-east Ireland north-west Northern Ireland occur Old Red Sandstone Ordovician outcrop outlier overlain overlying Plate Portrush probably Proc Quarry Rhaetic rhyolite sands schists sediments seen shales sill Silurian Silurian rocks Sketch-map Slieve Gullion Sperrin Mountains succession Tertiary thick thin Tholeiitic Basalts Triassic Tyrone Ulster Upper vents Visťan volcanic White Limestone Wilson and Robbie Zone