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.