Abstract

Near Creetown, in southwest Scotland, an elongated granodiorite, mass intrudes folded Silurian strata. The rock is well exposed in the Kirkmabreck quarries, where it has been worked for construction stone for many years. The petrography, flow layering, and joint system are described, and the last two are related to quarrying directions and the regional tectonic pattern. The origin is discussed briefly.

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