Clontail Greywacke

Material:
Greywacke
Category:
Siliciclastic, Sedimentary
Colour:
Green-Grey
Grain/Crystal Size:
Medium
Place of origin:
Meath, Ireland
Rock Unit Name:
Clontail Formation
Geological Age:
Silurian, Llandovery
GSI Rock Unit Code:
CL
Context of Use:
Building stone

Notes:

Green-grey, coarse and fine medium to thickly bedded greywackes, with dark grey, thinly bedded quartzose fine sandstones, both containing distinctive brown-red biotite. The unit was deposited as a turbidite with a source to the east or northeast. (McConnell et al. 2001, pp. 9, 71).

References

4358386 clontail_greywacke 1 apa-annotated-bibliography 50 default 4753 https://stonebuiltireland.com/wp-content/plugins/zotpress/
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McConnell, B., Philcox, M., & Geraghty, M. (2001). Geology of Meath: A geological description to accompany the Bedrock geology 1:100,000 scale map series, sheet 13, Meath. Geological Survey Ireland.