Craigballyharky

Craigballyharky (Irish: Rocky Craggy Townland) is a large hill in the south-west of the townland of Cookstown, County Tyrone, Northern Ireland.

Geology

The rock is a tonalite, which shares its name with the landform has yielded a 471 +2/-4 Ma U-Pb zircon age (Hutton et al. 1985).[1]

gollark: I probably don't want to do pure CS because it would be apioformic and I already know half the (early) content.
gollark: Not even a poorly trained 117M-parameter neural network can approximate my responses with any accuracy, so I doubt this.
gollark: Well, I am actually an ageless entity from beyond space and time, but you know.
gollark: Apparently not.
gollark: I think I have an entirely unused Project Euler account.

References
  1. http://findarticles.com/p/articles/mi_qa3721/is_200805/ai_n27899352/pg_2


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