Regional seismic interpretation of crustal framework, Canadian Arctic passive margin, Beaufort Sea, with comments on petroleum potential
Published:January 01, 2011
James Helwig, N. Kumar, P. Emmet, M. G. Dinkelman, 2011. "Regional seismic interpretation of crustal framework, Canadian Arctic passive margin, Beaufort Sea, with comments on petroleum potential", Arctic Petroleum Geology, Anthony M. Spencer, Ashton F. Embry, Donald L. Gautier, Antonina V. Stoupakova, Kai Sørensen
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Three new regional 2D seismic surveys in the Beaufort Sea provide a broad, deeper view of basins and crustal structure of the Meso-Cenozoic Canadian Arctic passive margin. The seismic profiles cover 16 270 km from inner shelf to over 2000 m water depth and include areas previously unsurveyed due to sea-ice limits. The surveys cover offshore Mackenzie Delta and extend north to Latitude 74°N off Banks Island. Geological interpretation is tied to exploratory wells in the Beaufort–Mackenzie Basin that has yielded 48 oil and gas discoveries in Cretaceous–Oligocene sandstones. The entire Meso-Cenozoic passive margin wedge beyond the depocentre ties into this established petroleum system. Three segments of the margin are defined by orientation and structural styles, from typical passive margin geometry to wrench structures to a compressional foldbelt superposed on the western segment. Outboard seismic profiles image oceanic crust and the inferred extinct spreading centre of the Canada Basin. The continent–ocean boundary is interpreted using gravity data supported by deep seismic reflectors. The regional deep imaging of the tectonic architecture, structural sequence and tectonostratigraphy of each segment are major results, and advance the understanding of the geological framework of known and potential petroleum basins of the Arctic margin of Canada.
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Arctic Petroleum Geology
The vast Arctic region contains nine proven petroleum provinces with giant resources but over half of the sedimentary basins are completely undrilled, making the region the last major frontier for conventional oil and gas exploration. This book provides a comprehensive overview of the geology and the petroleum potential of the Arctic. Nine papers offer a circum-Arctic perspective on the Phanerozoic tectonic and palaeogeographic evolution, the currently recognized sedimentary basins, the gravity and magnetic fields and, perhaps most importantly, the petroleum resources and yet-to-find potential of the basins. The remaining 41 papers provide data-rich, geological and geophysical analyses and individual oil and gas assessments of specific basins throughout the Arctic. These detailed and well illustrated studies cover the continental areas of Laurentia, Baltica and Siberia and the Arctic Ocean. Of special interest are the 13 papers providing new data and interpretations on the extensive, little known, but promising, basins of Russia.
A DVD is provided inside the back of the book, that contains PDFs of all papers plus all related Supplementary Publications.