Structural and Stratigraphic Evolution of the Faeroe-Shetland Channel and Northern Rockall Trough
Published:January 01, 1989
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M. M. Earle, E.J. Jankowski, I.R. Vann, 1989. "Structural and Stratigraphic Evolution of the Faeroe-Shetland Channel and Northern Rockall Trough", Extensional Tectonics and Stratigraphy of the North Atlantic Margins, A. J. Tankard, H. R. Balkwill
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Beneath the continental shelf north and west of Scotland, the upper crust consists of half-graben basins formed by extension and subsidence during the Devonian to Carboniferous and Permian to Jurassic periods. They developed on listric faults which dip southeastward and sole into a detachment surface previously used to emplace thrust sheets during the Caledonian orogeny, and subsequently used to invert the basins in the Tertiary.
West of the shelf is the deep Rockall Trough, which overlies a rift basin floored by intruded and very thin continental crust; this rift is a branch of the North Atlantic system, and extension began in the late Middle Jurassic. The rift continues north-ward and underlies the Faeroe-Shetland Channel, but is offset at the Orkney-Faeroe alignment, a cross-cutting tectonic element of early Paleozoic age or older.
Sediment distribution, thickness, and fades were strongly influenced by faulting, uplift, and subsidence. Regional paleorelief became lower with time, and prevailing conditions evolved from continental during the Devonian to marine during the Late Jurassic to Tertiary.
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Extensional Tectonics and Stratigraphy of the North Atlantic Margins
Stimulated by the wealth of frontier exploration data and deep seismic surveys about the North Atlantic margins, this publication was crafted to provide a comprehensive analysis of North Atlantic extension. The 40 papers in this volume are divided into 6 sections: concepts, North Atlantic perspectives, North American margins, European-African margins, North Sea and Barents Shelf, and analogs. This book is concerned primarily with the circum-North Atlantic data base. It is largely biased toward presentation and interpretation of data rather than being model driven. The book includes comparative stratigraphic columns for basins of the North Atlantic margins.