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

Andrea Schito; David Muirhead; John Parnell

doi:10.1144/sjg2021-021

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

Geology and Geophysics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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 language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Scottish Journal of Geology
Volume	58
Issue number	1
Early online date	9 May 2022
DOIs	https://doi.org/10.1144/sjg2021-021
Publication status	Published - 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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Schito_etal_SJG_Carbonaceous_Residues_In_AAMAccepted author manuscript, 1.64 MBLicence: Unspecified

Cite this

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title = "Carbonaceous residues in the Southern Uplands accretionary prism of Ireland and Scotland",

abstract = "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 byyounger 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. ",

author = "Andrea Schito and David Muirhead and John Parnell",

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T1 - Carbonaceous residues in the Southern Uplands accretionary prism of Ireland and Scotland

AU - Schito, Andrea

AU - Muirhead, David

AU - Parnell, John

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N2 - 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 byyounger 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.

AB - 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 byyounger 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.

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DO - 10.1144/sjg2021-021

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JF - Scottish Journal of Geology

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

Abstract

Bibliographical note

Data Availability Statement

Access to Document

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