Pre-Mesozoic Alpine basements -- Their place in the European Paleozoic framework
Jrgen F. von Raumer et al., Dpartement de Gosciences, Universit de Fribourg, 6, Chemin du Muse, CH-1700 Fribourg, Switzerland. Posted online 31 October 2012; http://dx.doi.org/10.1130/B30654.1.
Most of the present-day continents were assembled about 300 million years ago, in the mega continent Pangea, containing the pieces of older mountain chains and having resulted from the continuous transformation of Earth's crust during hundreds of million years in the past. During their long-lasting growth, the Appalachians and the Variscan European mountain chains were the place of large-scale transformations, reducing the former basement areas assembled in Pangea into smaller pieces through vertical and horizontal movements obeying the long-term crustal deformations imposed by the migration of continents. One of the major stages of these transformations led to the formation of the Alpine mountain chain, about 100-million-years ago, resulting from the collision of the African continent with Europe. The giant mountain-puzzle of the Alps have been the subject of geological investigations for more than 200 years. This paper by Jrgen F. von Raumer and colleagues tries to reconstruct the evolution for the time span between 500 million (Cambrian) to 300 million years (Permian, Pangea stage), to better integrate its puzzle stones into the worldwide Alleghenian-Variscan mountain belt comprising the Appalachians and the European and Asian Variscan mountain chains.
Low rates of bedrock outcrop erosion in the central Appalachian Mountains inferred from in situ 10Be
Eric W. Portenga et al., School of Geographical and Earth Science, University of Glasgow, Glasgow G12 8QQ, Scotland, UK, and Department of Environment and Geograph
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