A Multidisciplinary Approach to Sediment Provenance Analysis of the Late Silurian-Devonian Lower Old Red Sandstone succession, Northern Midland Valley Basin, Scotland

Zoe McKellar (Corresponding Author), Adrian J. Hartley, Andrew Morton, Dirk Frei

Research output: Contribution to journalArticle

Abstract

Sediment provenance analysis is important in reconstructing chronological and spatial relationships between source area erosion/exhumation and sediment deposition in adjacent basins. Here we provide new provenance data from conglomerate clast populations, sandstone petrography, heavy mineral assemblages and U-Pb detrital zircon geochronology from the 9 km thick, Siluro-Devonian Lower Old Red Sandstone (LORS), northern Midland Valley Basin (MVB), Scotland. The MVB developed in the foreland to the Caledonian Orogeny and comprises a mixed succession of conglomerate and pebbly sandstone interbedded with volcanic lithologies. Analysis of 554 samples (137 petrographical thin sections across 22 formations/members; 390 conglomerate clast recordings across seven locations; 17 heavy mineral and 10 detrital zircon samples) from the entire succession shows a proximal, consistent source or sources located to the east/northeast. These results indicate that sediment derived directly from areas of Scandian uplift of Norwegian lithologies is unlikely to have made a significant contribution to the LORS of the northern MVB and the provenance instead lies more proximally in both the neighbouring Dalradian metasedimentary rocks and other contemporaneous lithologies. The coarse-grained nature of the sedimentary rocks suggests consistent and continued uplift of these lithologies throughout deposition of the LORS. Integration of these provenance techniques allows robust interpretation of basin-fill from a tectonically rejuvenating source in the Caledonian foreland.
Original languageEnglish
JournalJournal of the Geological Society
Early online date13 Sep 2019
DOIs
Publication statusE-pub ahead of print - 13 Sep 2019

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Old Red Sandstone
Silurian
provenance
lithology
conglomerate
valley
heavy mineral
Caledonian orogeny
basin
clast
sediment
zircon
uplift
sandstone
Dalradian
basin fill
metasedimentary rock
petrography
thin section
exhumation

Cite this

@article{ff9131d8a2d64db7989bcf5bf2fa5134,
title = "A Multidisciplinary Approach to Sediment Provenance Analysis of the Late Silurian-Devonian Lower Old Red Sandstone succession, Northern Midland Valley Basin, Scotland",
abstract = "Sediment provenance analysis is important in reconstructing chronological and spatial relationships between source area erosion/exhumation and sediment deposition in adjacent basins. Here we provide new provenance data from conglomerate clast populations, sandstone petrography, heavy mineral assemblages and U-Pb detrital zircon geochronology from the 9 km thick, Siluro-Devonian Lower Old Red Sandstone (LORS), northern Midland Valley Basin (MVB), Scotland. The MVB developed in the foreland to the Caledonian Orogeny and comprises a mixed succession of conglomerate and pebbly sandstone interbedded with volcanic lithologies. Analysis of 554 samples (137 petrographical thin sections across 22 formations/members; 390 conglomerate clast recordings across seven locations; 17 heavy mineral and 10 detrital zircon samples) from the entire succession shows a proximal, consistent source or sources located to the east/northeast. These results indicate that sediment derived directly from areas of Scandian uplift of Norwegian lithologies is unlikely to have made a significant contribution to the LORS of the northern MVB and the provenance instead lies more proximally in both the neighbouring Dalradian metasedimentary rocks and other contemporaneous lithologies. The coarse-grained nature of the sedimentary rocks suggests consistent and continued uplift of these lithologies throughout deposition of the LORS. Integration of these provenance techniques allows robust interpretation of basin-fill from a tectonically rejuvenating source in the Caledonian foreland.",
author = "Zoe McKellar and Hartley, {Adrian J.} and Andrew Morton and Dirk Frei",
note = "We would like to thank the British Geological Survey for access to petrographical samples and additional data and Dr Emrys Phillips for discussion.",
year = "2019",
month = "9",
day = "13",
doi = "10.1144/jgs2019-063",
language = "English",
journal = "Journal of the Geological Society",
issn = "0016-7649",
publisher = "Geological Society of London",

}

TY - JOUR

T1 - A Multidisciplinary Approach to Sediment Provenance Analysis of the Late Silurian-Devonian Lower Old Red Sandstone succession, Northern Midland Valley Basin, Scotland

AU - McKellar, Zoe

AU - Hartley, Adrian J.

AU - Morton, Andrew

AU - Frei, Dirk

N1 - We would like to thank the British Geological Survey for access to petrographical samples and additional data and Dr Emrys Phillips for discussion.

PY - 2019/9/13

Y1 - 2019/9/13

N2 - Sediment provenance analysis is important in reconstructing chronological and spatial relationships between source area erosion/exhumation and sediment deposition in adjacent basins. Here we provide new provenance data from conglomerate clast populations, sandstone petrography, heavy mineral assemblages and U-Pb detrital zircon geochronology from the 9 km thick, Siluro-Devonian Lower Old Red Sandstone (LORS), northern Midland Valley Basin (MVB), Scotland. The MVB developed in the foreland to the Caledonian Orogeny and comprises a mixed succession of conglomerate and pebbly sandstone interbedded with volcanic lithologies. Analysis of 554 samples (137 petrographical thin sections across 22 formations/members; 390 conglomerate clast recordings across seven locations; 17 heavy mineral and 10 detrital zircon samples) from the entire succession shows a proximal, consistent source or sources located to the east/northeast. These results indicate that sediment derived directly from areas of Scandian uplift of Norwegian lithologies is unlikely to have made a significant contribution to the LORS of the northern MVB and the provenance instead lies more proximally in both the neighbouring Dalradian metasedimentary rocks and other contemporaneous lithologies. The coarse-grained nature of the sedimentary rocks suggests consistent and continued uplift of these lithologies throughout deposition of the LORS. Integration of these provenance techniques allows robust interpretation of basin-fill from a tectonically rejuvenating source in the Caledonian foreland.

AB - Sediment provenance analysis is important in reconstructing chronological and spatial relationships between source area erosion/exhumation and sediment deposition in adjacent basins. Here we provide new provenance data from conglomerate clast populations, sandstone petrography, heavy mineral assemblages and U-Pb detrital zircon geochronology from the 9 km thick, Siluro-Devonian Lower Old Red Sandstone (LORS), northern Midland Valley Basin (MVB), Scotland. The MVB developed in the foreland to the Caledonian Orogeny and comprises a mixed succession of conglomerate and pebbly sandstone interbedded with volcanic lithologies. Analysis of 554 samples (137 petrographical thin sections across 22 formations/members; 390 conglomerate clast recordings across seven locations; 17 heavy mineral and 10 detrital zircon samples) from the entire succession shows a proximal, consistent source or sources located to the east/northeast. These results indicate that sediment derived directly from areas of Scandian uplift of Norwegian lithologies is unlikely to have made a significant contribution to the LORS of the northern MVB and the provenance instead lies more proximally in both the neighbouring Dalradian metasedimentary rocks and other contemporaneous lithologies. The coarse-grained nature of the sedimentary rocks suggests consistent and continued uplift of these lithologies throughout deposition of the LORS. Integration of these provenance techniques allows robust interpretation of basin-fill from a tectonically rejuvenating source in the Caledonian foreland.

U2 - 10.1144/jgs2019-063

DO - 10.1144/jgs2019-063

M3 - Article

JO - Journal of the Geological Society

JF - Journal of the Geological Society

SN - 0016-7649

ER -