Alpha Ridge and iceland-products of the same plume?

Canadian expedition to study the Alpha Ridge complex: results of the seismic refraction survey

“…Velocities beneath the eastern CESAR south Ridge match those beneath Iceland itself and velocities underlying the central CESAR south ridge resemble those associated with the small volcanic island of Heimaey a little to the south of Iceland. Our interpretation of the Alpha Ridge complex as the product of a mantle plume is supported by (a) its enormous satellite magnetic anomaly, which is similar in many respects to the satellite magnetic anomaly over Iceland (Taylor 1983;Coles 1985;Forsyth et al 1986b), (b) its gravity expression, which has led Weber (1986) to conclude that it may be composed of a large pile of mafic rock, (c) heat flow (Taylor et al 1986) and bathymetric (Weber 1986) data that are consistent with the existence of a hotspot beneath the Amerasian Basin in Cretaceous times and (d) the basement alkalic basaltic rocks that were recovered during the CESAR project (Van Wagoner et al 1986). (5) The Alpha Ridge complex and Iceland may be products of the same mantle plume.…”

“…Here we report the results of the most comprehensive Arctic Ocean seismic refraction survey to date, conducted as part of the CESAR (Canadian Expedition to Study the Alpha Ridge) project across the NE Alpha Ridge complex and its northern flank within the SE Makarov Basin (Fig. 1;Forsyth et al 1986a).…”

Geological features of the northeastern Canadian Arctic margin revealed from analysis of potential field data

“…Forsyth et al, 1986aForsyth et al, , 1986bWeber, 1990;Jokat, 2003;Piskarev, 2004;Funck et al, 2011;Bruvoll et al, 2012) coupled with geochemical and petrological results from rock core samples recovered from the Alpha Ridge (e.g. Van Wagoner and Robinson, 1985;Jokat et al,1999;Mühe and Jokat, 1999) suggests the presence of massive and extensive volume of mafic magmatic rocks, especially basalts.…”

Petroleum prospectivity of the Canada Basin, Arctic Ocean

“…Basalt cores and seismic refraction and reflection data have suggested to several workers (Weber, 1990;Asudeh et al, 1988;Jackson et al, 1986;Forsyth et al, 1986;andMuller, 1994 andJokat et al, 2007) that the A-MR constitutes a Large Igneous Province (LIP), perhaps a hot spot trace, that formed atop MORB and older oceanecontinent transitional crust (OCT) of the Amerasia Basin between about 127.5 and 89e83.5 Ma (Grantz et al, 2011b), as noted above. The volcanic rocks of the LIP are at least as young as 89 Ma, based on a 40 Ar/ 39 Ar age of basalt from near the top of the A-MR about 40 km south of the Makarov Basin (Wilfried Yokat, pers.…”