Dear colleagues,

We would like to invite you to participate in the following joint GSA/EGU session at the EGU General Assembly 2015 :

 TS6.2/GD5.6 Mountains across the oceans : Caledonian, Variscan and Appalachian orogenies through time.

Caledonian Variscan and Appalachian mountain belts, now disrupted on both sides of the Atlantic ocean, once formed the largest orogenic system of Pangea. These paleoAtlantic orogenic systems, formed during closure of Iapetus and partly during closure of Rheic, share striking common or contrasting features.This sessions aims at gathering together geologists, geophysicists and modelers interested in correlations, comparisons of those lithospheric scale structures and their bearing on our understanding of universal processes such as how margins were first shaped by rifting, break-up and coeval magmatism, then afected by ocean closure, ophiolite obductions and eventually definitive suture, continental subduction and collision. Their heritage and their control on the later evolution of Tethyan Europe or Eastern North America also have to be considered in their comprehensive knowledge.

Trond Torsvik, CEED, Oslo, was sollicited to give a keynote talk entitled :

The Caledonides in space and time: From "continental drift" to plate tectonic modelling

We encourage applications from students and young scientists bringing new methods and sights in orogens geodynamics. Transdisciplinary , synthetic or large scale considerations are also welcome.

 This session will be held at the EGU General Assembly, 12 - 17 April, 2015 in Vienna. The online abstract submission deadline is January 07, 2015, 13:00 CET. General information on the meeting can be obtained from the internet under www.egu2015.eu