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Geology; July 2002; v. 30; no. 7; p. 643-646; DOI: 10.1130/0091-7613(2002)030<0643:MIIOSS>2.0.CO;2
© 2002 Geological Society of America
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Model-inspired interpretation of seismic structures in the Central Alps: Crustal wedging and buckling at mature stage of collision

Jean-Pierre Burg*,1, Dimitrios Sokoutis*,2 and Marco Bonini*,3

1 Geologisches Institut, ETH-Zentrum and Universität Zürich, Sonneggstrasse 5, CH-8092 Zürich, Switzerland
2 Department of Geology and Physical Geography, School of Geology, Aristotle University of Thessaloniki, 540 06 Thessaloniki, Greece
3 Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Sezione di Firenze, via G. La Pira 4, 50121 Firenze, Italy

Analogue models of continental convergence inspire a new interpretation of the deep-seismic profile across the Central Alps, the classical collision belt of Western Europe. We conclude that active mountain-building processes involve wedging and crustal buckling and that seismic information does not reflect subduction-related orogeny, but documents recent crustal shortening. We also infer that present-day subduction of the delaminated European mantle lithosphere takes place below the northern side of the mountain belt.

Key Words: deep structure • Alps • collision • mountain building




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