 | | Journal (article/letter/editorial) | | obtained from the Iberia Abyssal Plain and from the Gorringe Bank, combined with those already known on the...zones were sampled along East-West transects of the ocean-continent transition, immediately West or at the...exposed at both the Iberia Abyssal Plain and the Gorringe Bank are clearly different. The presence of plagioclase-bearing...lower pressures ( _<0.6 GPa) registered in the Gorringe Bank gabbroic rocks and in some reexamined gabbros...Plain, transitional and depleted tholeiites at the Gorringe Bank. The trace elements and the isotope data |  | | Journal (article/letter/editorial) | | magmatism prior to continental break-up in the North Atlantic and geodynamic implications Urs Scha«rer a; *...the Galicia and Gorringe banks and in the Iberia Abyssal Plain of the North Atlantic, unroofed subcontinental...determined on the same grains. For Mt. Gettysburg at Gorringe, gabbro emplacement ages of 137.5 þ 0.5 (2c) Ma...mantle domains. Gabbro zircons from Mt. Ormonde at Gorringe yield a much younger age of 77.1 þ 0.4 Ma...LILE-depleted than those sampled by the about 20 Myr older Gorringe gabbros. The data demonstrate that magmatism occurring |  | | Journal (article/letter/editorial) | | com/locate/gca Cretaceous seamounts along the continent–ocean transition of the Iberian margin: U–Pb ages and...age and origin of seamounts in the eastern North Atlantic, 54 titanite and 10 zircon fractions were dated...20–30 m.y. after opening of the eastern North Atlantic. Initial isotope signatures are: 19.139–19.620...epsilon Hf. These signatures are different from Atlantic MORB, the Madeira Archipelago and the Azores,...formerly beneath Iberia and presently within the ocean–continent transition zone. Inheritance in zircon |  | | Journal (article/letter/editorial) | | lithosphere may be related to the arrival of the Central Atlantic Plume head beneath Western Europe about 70 Ma...“Central Atlantic Plume” on the European continent related to the opening of the Atlantic Ocean (Piromallo... Has it been modified by the opening of the Atlantic Ocean and the 204 J.-M. Dautria et al. / Lithos...secondary phases such as amphibole (pargasite to kaersutite, e.g. Pg), Al-poor diopside (e.g. SOU), and more...(see Tables 1 and 2). MO-OR lavas: Monchique and Ormonde lavas from Bernard-Griffiths et al. (1997). EAR: |  | | Book | | McCLAIN, J. S. & BURNETT, M. Evo lu tion or Lhe ocean crust: resu lts from recent seisn1ic experin1ents... FISK, M. R. Depths and temperatures of mid-ocean-ridge magma chambers and the composition of their source...FLOWER, M. F. J. Spreading-rate paran1eters in ocean crust: analogue for ophiolite? .......... . SMEWl:---JG...GREGORY, R. T. Melt percolation beneath a spreading ridge: evidence from the Sen1ail peridotite, On1an .....WHITE, R . S . Atlantic ocean ic crust: seismic structure of a slow-spreadi ng ridge .......... .... |
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