Carbonaceous residues in the Southern Uplands accretionary prism of Ireland and Scotland

Andrea Schito* (Corresponding Author), David Muirhead, John Parnell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Carbonaceous residues occur in mudstones and turbidites of the Lower Palaeozoic accretionary prism in Ireland and Scotland (Longford-Down, Southern Uplands). The accretionary prism was host to fluid migration during both the Lower Palaeozoic and Carboniferous-Triassic, so the age of the carbonaceous fluids is uncertain. Raman spectroscopy data for the carbonaceous residues in the Lower Palaeozoic rocks indicate palaeotemperatures similar to those measured in their host rocks, and much higher than those in the Carboniferous cover rocks or in residues in the cover rocks. These data show that residues in the prism rocks are of Lower Palaeozoic age, and were not contributed by
younger mineralizing fluids. The residues represent hydrocarbons generated from source rocks in the prism that were part of the Ordovician-Silurian deposits of the Iapetus Ocean.
Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalScottish Journal of Geology
Issue number1
Early online date9 May 2022
Publication statusPublished - May 2022

Bibliographical note

Acknowledgements: We are grateful to E. Heptinstall for technical support.
Funding: This work was funded by the School of Geosciences of the University of Aberdeen.

Data Availability Statement

All data generated or analysed during this study are included in this published article.


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