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A Xenolithic Sill at Tallabrista, Co. Donegal, Ireland
Published online by Cambridge University Press: 01 May 2009
Abstract
An epidiorite sill emplaced in quartzites becomes charged with xenoliths of quartzite and of an amphibole-rich rock possibly derived from underlying limestone horizons. The matrix of the xenolith-rich part of the sill is studied with large hornblende-biotite “crystals” that may represent small limestone xenoliths that have been basified and homogenized.
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