The lithospheric density structure of the Eastern Alps

Ebbing, J., Braitenberg, C. and Götze, H. J. (2006) The lithospheric density structure of the Eastern Alps Tectonophysics, 414 (1-4). pp. 145-155. DOI 10.1016/j.tecto.2005.10.015.

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The three-dimensional (3D) lithospheric density structure of the Eastern Alps was investigated by integrating results from reflection seismics, receiver function analyses and tomography. The modelling was carried out with respect to the Bouguer gravity and the geoid undulations and emphasis were laid on the investigations of the importance of deep lithospheric features. Although the influence of inhomogeneities at the lithosphere-asthenosphere boundary on the potential field is not neglectable, they are overprinted by the response of the density contrast at the crust-mantle boundary and intra-crustal density anomalies. The uncertainties in the interpretations are in the same order of magnitude as the gravity field generated by the deep lithosphere. After including the deep lithospheric geometry from the tomographic model it is shown that full isostatic equilibrium is not achieved below the Eastern Alps. However, calculation of the isostatic lithospheric thickness shows two areas of lithospheric thickening along the central axis of the Eastern Alps with a transition zone below the area of the TRANSALP profile. This is in agreement with the tomographic model, which features a change in lithospheric subduction direction. (c) 2005 Elsevier B.V. All rights reserved.

Document Type: Article
Research affiliation: Kiel University
Refereed: No
DOI etc.: 10.1016/j.tecto.2005.10.015
ISSN: 0040-1951
Date Deposited: 12 Jan 2012 05:41
Last Modified: 08 Oct 2012 10:23

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