Structure and Stratigraphy of the Porcupine Basin: Relationships to Deep Crustal Structure and the Opening of the North Atlantic
Published:January 01, 1989
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Peter F. Croker, Simon L. Klemperer, 1989. "Structure and Stratigraphy of the Porcupine Basin: Relationships to Deep Crustal Structure and the Opening of the North Atlantic", Extensional Tectonics and Stratigraphy of the North Atlantic Margins, A. J. Tankard, H. R. Balkwill
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The Porcupine basin is a north-south-aligned basin offshore western Ireland that contains more than 8 km of post-Paleozoic sediments. The Mesozoic and Cenozoic structure and stratigraphy of the basin have been established on the basis of a large amount of industry seismic-reflection data and 25 exploration wells. Interpretation of the Paleozoic framework is based on some well information and seismic data from the margins of the basin. A series of seismic sections, principally from the western flank of the basin, is used to illustrate the structural styles of the prerift, synrift, and postrift phases of basin development. Thèse structural styles can be related to episodes in the opening of the North Atlantic. A recently acquired BIRPS deep-crustal profile across the basin extends the conventional seismic record in which reflections are seen below the basin to about 10 sec. At the eastern end of the line, beneath unextended basement, the reflection Moho is at nearly 12 sec, whereas beneath the Porcupine Ridge the reflection Moho is at about 10 sec.
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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.