Browse Items (5 total)

  • Tags: geology

"Ballyshannon. (July 25, 1824.) Soon after leaving Pettigo going towards Lough Derg, the limestone ceases and the mineral productions change entirely..."

"This district is a primitive formation of quartz and gneiss with blue mountain limestone filled with organic remains on the margin of Lough Erne."

“Lough Derg is a lonely sheet of water, extending from north to south, about six miles in length..."
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