Work

What We (Possibly) Know About the 3D Structure of Crust and Mantle Beneath the Alpine Chain

Year: 2024

Type: book-chapter

Abstract: This chapter starts with imaging of the crust including the Moho, which geometry is particularly complex in the Alps where European, Adriatic and Ligurian Moho overlap, before moving on to tomography of Alpine subductions. The change in subduction polarity along strike as well as the highly segmented aspect of Alpine slabs has been the targets of several recent tomographies. They have benefited from the development of permanent networks and the opening of databases. Upper mantle tomography has not benefited as much as crustal tomography from the methodological innovations related to the use of ambient noise correlations. New seismic experiments with close station spacing have brought the resolution of tomography closer to the scale of geological observations, but such experiments are generally confined to a profile and tomography is limited to a 2D section.

Source: Wiley eBooks

DOI: 10.1002/9781394299508.ch2

Author: Anne PAUL

Institutions: Centre National de la Recherche Scientifique, Institut des Sciences de la Terre, Institut de Recherche pour le Développement, Université Savoie Mont Blanc, Université Grenoble Alpes

Language: English

Topic: Geological Formations and Processes Exploration

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: bronze

Funders: Agence Nationale de la Recherche, National Natural Science Foundation of China

Awards: Probing Alpine geodynamics with state-of-the-art seismic arrays and tomography, G39620777, G623270878, G7240651115, Innovative strategies for observing and modelling natural systems