Basin Architecture of the Newfoundland Continental Margin and Its Relationship to Ocean Crust Fabric During Extension
Published:January 01, 1989
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H.J. Welsink, S.P. Srivastava, A.J. Tankard, 1989. "Basin Architecture of the Newfoundland Continental Margin and Its Relationship to Ocean Crust Fabric During Extension", Extensional Tectonics and Stratigraphy of the North Atlantic Margins, A. J. Tankard, H. R. Balkwill
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Petroleum exploration and research activity over the past two decades have resulted in a substantial amount of geophysical and geological data, including seismic reflection, deep exploration wells, gravity, and magnetics. This chapter attempts to synthesize and integrate the data toward a tectonic- structural map of the Grand Banks and Orphan basins. The regional distribution of transfer fault azimuths from NW-SE on the Grand Banks to SW- NE in the Orphan basin is matched by the trends of flow lines in the adjacent ocean floors. These similarities suggest structural linkage between the extensional fabric of the continental crust and the pattern of ocean opening. A temporal relationship between basin-forming events and sequential opening of the Atlantic is implied from the correlation of Jeanne dArc sequence stratigraphy with the timing of intermittent plate reorganizations recorded in magnetic anomalies and disruptions in fracture- zone or flow-line lineations. These spatial and temporal relationships link episodic subsidence of the continental margin and oceanic plate motions.
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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.