Analogue model of rift linkage and inversion with application to the Western Alps

Authors

Nicolas Dall’Asta, Université de Pau et des Pays de l’Adour
Yoann Denèle, Université de Toulouse
Vincent Regard, Université de Toulouse, University of Nebraska-Lincoln
Anne Frayssignes, Université de Toulouse
Guilhem Hoareau, Université de Pau et des Pays de l’Adour
Sylvie Leroy, Sorbonne Université
Thibaut Pires, Université de Toulouse

Document Type

Article

Date of this Version

9-20-2023

Citation

Comptes Rendus Géoscience—Sciences de la Planète. https://doi.org/10.5802/crgeos.231

Comments

Used by permission.

Abstract

Along-strike segmentation of orogens raises questions because its causes may predate orogeny in relation to structural inheritance. Here we focus on rift/margin linkage domains and their inversion by using analogue models with image analysis to extract the 3D strain field. Extensional models document, depending on the strike-perpendicular offset and the brittle-crust thickness, three types of rift linkage modes: (1) oblique linkage with early T-fault, (2) strongly-oblique linkage with R-fault network and, (3) transfer-linkage with late Y-strike-slip fault. Analogue model of inverted rift basins is used to analyse the misunderstood tectonic evolution of transition zones in the segmented Western Alpine belt.