Ocean-Continent Transition – Iberia Margin and Comparison with Fossil Analogues in the Alps

D016 OCEAN-CONTINENT TRANSITION: IBERIA MARGIN AND COMPARISON WITH FOSSIL ANALOGUES IN THE ALPS Deep sea drilling along the Greenland and the West-Iberian margins has revealed that continental break-up can lead to highly divergent styles of margin structures: volcanic rifted margins with formation of thick igneous crust contrasting with non-volcanic rifted margins with virtually no igneous crust forming during break-up. These results faced the margin community with new problems: how does the strength of the lithosphere evolve during continental break-up and how do extensional faulting and emplacement of igneous rocks which are the result of temperature dependent processes of solid-state deformation