The Devonian–Carboniferous transition and its structural setting at Chillaton, West Devon, England

Selwood, E. B.; Stewart, I. J.; Turner, Peter; Whiteley, M. J.

doi:10.1017/s0016756800026297

Geol. Mag.

1982

DOI: 10.1017/s0016756800026297

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The Devonian–Carboniferous transition and its structural setting at Chillaton, West Devon, England

E. B. Selwood

I. J. Stewart

Peter Turner

et al.

Abstract: SummaryBoreholes penetrating the inverted limb of a major fold in an allochthonous thrust sheet at Chillaton, West Devon, revealed highly fossiliferous strata spanning the Devonian–Carboniferous boundary in continuous succession. Details of the fauna, which includes conodonts, trilobites and ostracods, are given. Abundant siphonodellid conodonts allow the boundary to be determined according to the recommendations of the working group on the Devonian–Carboniferous boundary of the IUGS Commission on Stratigraphy… Show more

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Cited by 10 publications

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The Courceyan stratigraphy of the Pallaskenry Borehole, County Limerick, Ireland

Somerville

Jones²

1985

Geological Journal

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The Pallaskenry Borehole, Co. Limerick, Ireland provides an almost complete Courceyan (Dinantian) succession from Old Red Sandstone facies up to Waulsortian limestones. A revised lithostratigraphic‐al nomenclature for this succession is presented. Examination of the conodont and coral faunas in the borehole has enabled biozones to be defined which can be recognized throughout the Limerick Province. Biostratigraphical correlations are made with Courceyan successions at Hook Head, Co. Wexford, in the Mendip Hills and in Knap Farm Borehole in the Southwestern Province of Britain. Conodont taxa show a clear distinction betweeen the shelf faunas of the Limerick Province, Hook Head and eastern Mendip, and distal shelf faunas from south Cork, Knap Farm and Dinant, Belgium, which probably reflect their different palaeogeographical positions. Acknowledgements. The authors wish to express their thanks to Professor G. D. Sevastopulo, Drs. R. L. Austin, J. R. Nudds and P. Strogen and Mr. M. Mitchell for constructive criticism of the manuscript. We would also like to thank Dr. T. R. Reilly, Mr. C. McDermot and Dr. A. Sleeman of the Geological Survey of Ireland, and Dr. M. E. Philcox for fruitful discussion on the Iithostratig‐raphical nomenclature. G. LI. Jones was a Research Fellow at Trinity College, Dublin during the period of this work. He was funded through the Upper Palaeozoic Atlas of Ireland (UPAIR) Project, financed by the Department of Energy and administered through the Geological Survey of Ireland and Trinity College. He gratefully acknowledges the organization and supervision provided by Professors C. H. Holland and G. D. Sevastopulo and Dr. D. Naylor; and the assistance with conodont processing given by Ms. B. Thornbury. Thanks are also extended to Mr. J. Kennedy and Mr. P. Moffat for assistance with the diagrams.

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The Courceyan stratigraphy of the Pallaskenry Borehole, County Limerick, Ireland

Somerville

Jones²

1985

Geological Journal

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Climate-controlled mass extinctions, facies, and sea-level changes around the Devonian–Carboniferous boundary in the eastern Anti-Atlas (SE Morocco)

Kaiser¹,

Becker²,

Steuber³

et al. 2011

Palaeogeography, Palaeoclimatology, Palaeoecology

107

105

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The Looe, South Devon and Tavy basins: the Devonian rifted passive margin successions

Leveridge

2011

Proceedings of the Geologists' Association

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The majority of 'Marine Devonian' GCR sites are located on the Early to Latest Devonian rocks of central and north Cornwall and south Devon, within the successions of the east-west Looe, South Devon and Tavy basins, their sub-basins and associated highs. This half-graben and full graben complex developed sequentially northwards during the Devonian period by rifting of the Rhenohercynian passive margin. Basin formation and development was initiated in a terrestrial setting, but from the late Early Devonian marine environments prevailed.Each basin and high had its own stratigraphical succession, and there is variation between those of composite sub-basins. From Mid-Devonian times basins were characterised by hemipelagic deposits with turbid flow incursions of predominantly fine-grained northerly derived terrigenous clastics, and the highs developed carbonate platforms with reefs that persisted into the Late Devonian. Associated alkaline basaltic rocks are typical of the continental rifting regime with high extension. The complex basin and high architecture directly determined major structures, folds and thrusts, developed during regional contraction, and review of those structures permits placement of the sites in that structural context.

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The Devonian–Carboniferous transition and its structural setting at Chillaton, West Devon, England

Cited by 10 publications

References 5 publications

The Courceyan stratigraphy of the Pallaskenry Borehole, County Limerick, Ireland

The Courceyan stratigraphy of the Pallaskenry Borehole, County Limerick, Ireland

Climate-controlled mass extinctions, facies, and sea-level changes around the Devonian–Carboniferous boundary in the eastern Anti-Atlas (SE Morocco)

The Looe, South Devon and Tavy basins: the Devonian rifted passive margin successions

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