Science, Maths & Technology
The geology of Northern Ireland
...Scotland, Scandanavia, North America and, of course, Northern Ireland. The granites of South Armagh and the marine sediments of Down to Armagh were all part of this great collision. Remnants of these mountains are found in the present day Sperrin Mountains of Tyrone. Semi-arid conditions prevailed and the mountains were eroded to form Devonian sandstones (marked as brown...