Zircon age and heavy mineral constraints on provenance of North Sea Carboniferous sandstones

Andrew Clifford Morton, J. C. Claoue-Long, C. R. Hallsworth

    Research output: Contribution to journalArticle

    23 Citations (Scopus)

    Abstract

    The understanding of sediment provenance and sediment transport routes is a key element in establishing reservoir presence in elastic petroleum systems. Determination of sediment provenance is particularly difficult in structurally complex areas and in sequences that have undergone extensive burial diagenesis. This paper describes a method that overcomes these problems, by combining quantitative heavy mineral analysis with detrital zircon age dating. Quantitative heavy mineral analysis identifies differences in sediment provenance within the sample set, and zircon age data provide diagnostic criteria for the identification of the various source terrains. The high degree of resolution shown by this approach is demonstrated using the North Sea Carboniferous as an example. The Carboniferous of the North Sea has suffered extensive diagenetic modification during its complex burial history, is difficult to image with seismic data, and in some areas, notably the central and northern North Sea, preservation is patchy. The understanding of Carboniferous sand provenance is therefore rudimentary. The Tayport and Firth Coal formations (latest Devonian to Early Carboniferous) of the Outer Moray Firth (central North Sea) were derived from a source area to the north of the British Isles, with sediment transported along the proto-Viking Graben. Some local input is recognised in the Firth Coal Formation. The Westoe Coal Formation (Westphalian B) in the southern North Sea was derived from the southeast, probably from the Saxo-Thuringian Zone of the central European Variscides. The Lower Ketch Member (Westphalian C) in the southern North Sea has a northern provenance, with abundant chrome spinel suggesting derivation from ophiolitic material on the Rinkobing-Fyn High. (C) 2001 NERC. Published by Elsevier Science Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)319-337
    Number of pages18
    JournalMarine and Petroleum Geology
    Volume18
    DOIs
    Publication statusPublished - 2001

    Keywords

    • zircon age
    • North Sea Carboniferous sandstones
    • heavy mineral analysis
    • RB-SR
    • BASIN
    • PB
    • CALEDONIDES
    • EVOLUTION
    • HISTORY
    • GNEISS

    Cite this

    Zircon age and heavy mineral constraints on provenance of North Sea Carboniferous sandstones. / Morton, Andrew Clifford; Claoue-Long, J. C.; Hallsworth, C. R.

    In: Marine and Petroleum Geology, Vol. 18, 2001, p. 319-337.

    Research output: Contribution to journalArticle

    Morton, Andrew Clifford ; Claoue-Long, J. C. ; Hallsworth, C. R. / Zircon age and heavy mineral constraints on provenance of North Sea Carboniferous sandstones. In: Marine and Petroleum Geology. 2001 ; Vol. 18. pp. 319-337.
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    N2 - The understanding of sediment provenance and sediment transport routes is a key element in establishing reservoir presence in elastic petroleum systems. Determination of sediment provenance is particularly difficult in structurally complex areas and in sequences that have undergone extensive burial diagenesis. This paper describes a method that overcomes these problems, by combining quantitative heavy mineral analysis with detrital zircon age dating. Quantitative heavy mineral analysis identifies differences in sediment provenance within the sample set, and zircon age data provide diagnostic criteria for the identification of the various source terrains. The high degree of resolution shown by this approach is demonstrated using the North Sea Carboniferous as an example. The Carboniferous of the North Sea has suffered extensive diagenetic modification during its complex burial history, is difficult to image with seismic data, and in some areas, notably the central and northern North Sea, preservation is patchy. The understanding of Carboniferous sand provenance is therefore rudimentary. The Tayport and Firth Coal formations (latest Devonian to Early Carboniferous) of the Outer Moray Firth (central North Sea) were derived from a source area to the north of the British Isles, with sediment transported along the proto-Viking Graben. Some local input is recognised in the Firth Coal Formation. The Westoe Coal Formation (Westphalian B) in the southern North Sea was derived from the southeast, probably from the Saxo-Thuringian Zone of the central European Variscides. The Lower Ketch Member (Westphalian C) in the southern North Sea has a northern provenance, with abundant chrome spinel suggesting derivation from ophiolitic material on the Rinkobing-Fyn High. (C) 2001 NERC. Published by Elsevier Science Ltd. All rights reserved.

    AB - The understanding of sediment provenance and sediment transport routes is a key element in establishing reservoir presence in elastic petroleum systems. Determination of sediment provenance is particularly difficult in structurally complex areas and in sequences that have undergone extensive burial diagenesis. This paper describes a method that overcomes these problems, by combining quantitative heavy mineral analysis with detrital zircon age dating. Quantitative heavy mineral analysis identifies differences in sediment provenance within the sample set, and zircon age data provide diagnostic criteria for the identification of the various source terrains. The high degree of resolution shown by this approach is demonstrated using the North Sea Carboniferous as an example. The Carboniferous of the North Sea has suffered extensive diagenetic modification during its complex burial history, is difficult to image with seismic data, and in some areas, notably the central and northern North Sea, preservation is patchy. The understanding of Carboniferous sand provenance is therefore rudimentary. The Tayport and Firth Coal formations (latest Devonian to Early Carboniferous) of the Outer Moray Firth (central North Sea) were derived from a source area to the north of the British Isles, with sediment transported along the proto-Viking Graben. Some local input is recognised in the Firth Coal Formation. The Westoe Coal Formation (Westphalian B) in the southern North Sea was derived from the southeast, probably from the Saxo-Thuringian Zone of the central European Variscides. The Lower Ketch Member (Westphalian C) in the southern North Sea has a northern provenance, with abundant chrome spinel suggesting derivation from ophiolitic material on the Rinkobing-Fyn High. (C) 2001 NERC. Published by Elsevier Science Ltd. All rights reserved.

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    KW - HISTORY

    KW - GNEISS

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    JF - Marine and Petroleum Geology

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