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Protected Areas

Fardross Stream ASSI

Last updated: 5 February 2010

Site No ASSI 141
Area (ha) 2.41
Declared Date 29/01/1997
Confirmed Date 29/08/1997
County Tyrone
Council(s) Dungannon & South Tyrone BC
Keywords Earth Science

Fardross Stream cuts through rocks that range in age from approximately 339 million years old (M.y.) to some 335 M.y. and span five distinct geological formations in the Tyrone Group. It is extremely rare to find the boundary between five formations, so this is an exceptional exposure. The rocks, and the fossils they contain, indicate that they were laid down in a marine environment: as water depth and distance from land slowly increased through time, sand and mud deposition gave way to limestones. Fossils include colonial and solitary corals and brachiopods.

Site Related Documents

Site map (.PDF 1.12Mb)Opens in New window, Citation documents (.PDF 80Kb)Opens in New window and Views about Management (.PDF 47Kb)Opens in New window.