Download The North Atlantic Igneous Province: Stratigraphy, Tectonic, by Geological Society of London, D. W. Jolley, B. R. Bell PDF
By Geological Society of London, D. W. Jolley, B. R. Bell
The North Atlantic Igneous Province has been the topic of in depth medical research during the last thirty years, with a large box of data being accrued. lately, acceptance of the aptitude function of huge Igneous Provinces in affecting ocean and surroundings platforms and biotic evolutionary pathways has bring about elevated curiosity during this province. This has been additional prompted by way of the growth within the look for oil and gasoline in Mesozoic and tertiary sediments alongside the NE Atlantic Margin. a better figuring out of the interplay among igneous and sedimentary approaches is key for the identity of power hydrocarbon resources.The areas coated comprise continental margin Norway, east and west Greenland, The Faroe-Shetland Basin and the Faroe Islands themselves. The papers during this e-book comprise new information and interpretations of North Atlantic Igneous Province magmatic approaches, rift evolution, tectonics, stratigraphy (chemostratigraphy, biostratigraphy, seismic and isotope stratigraphy) and sediment dispersal. a few of the papers undertake a multidisciplinary method of the research and interpretation of advanced volcanic and sedimentary sequences. those new info, and the reports and compilations of exiting facts give you the reader with entry to present study instructions in North Atlantic Igneous Province Geology.
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Additional resources for The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes
Example text
WHITE Short term plume fluctuations A characteristic feature of the oceanic crust generated south of Iceland is that it exhibits prominent 'V-shaped' ridges in the bathymetry and gravity signatures (Fig. 2). These were first recognized by Vogt (1971). They propagate away from the plume core with apparent velocities of 75-150 mm a- 1 , some 4-8 times faster than the full spreading rate. Geochemical and seismic data suggest that they are generated by crustal thickness variations of 1-2 km (White et al 1995; Smallwood & White 1998; Weir et al.
We also predict that it continues farther southward below the lavas, noting that the distance between the landward lava boundary and the COB is larger than on the V0ring margin. Fig. 5. Interpreted seismic profiles (Fig. 2) illustrating Late Cretaceous low-angle detachment systems beneath the Gjallar Ridge in the outer V0ring Basin (a) (Ren et al. in press); and on the Lofoten-Vesteralen margin (b and c) (Tsikalas et al. 2001). 48 O. ELDHOLM ET AL. South of 70°N, the Late Cretaceous-Paleocene rift obliquely cuts the Late JurassicEarly Cretaceous rift zone.
LARSEN, H. C. & JAKOBSDOTTIR, S. 1988. Distribution, crustal properties and significance of seaward dipping subbasement reflectors off East Greenland. In: MORTON, A. C. & PARSON, L. M. (eds) Early Tertiary Volcanism and the Opening of the NE Atlantic. Geological Society, London, Special Publications, 39, 95-114. LARSEN, H. C. & SAUNDERS, A. D. 1998. Tectonism and volcanism at the southeast Greenland rifted margin: A record of plume impact and later continental rupture. In: SAUNDERS, A. , LARSEN, H.