TS6.1 | Dynamics and structural evolution of fold-and-thrust belts and accretionary prisms: an interdisciplinary approach
EDI
Dynamics and structural evolution of fold-and-thrust belts and accretionary prisms: an interdisciplinary approach
Convener: Esther Izquierdo Llavall | Co-conveners: Jonas B. Ruh, Sandra BorderieECSECS, Olivier Lacombe, Christoph von Hagke
Orals
| Tue, 25 Apr, 14:00–18:00 (CEST)
 
Room K1
Posters on site
| Attendance Wed, 26 Apr, 10:45–12:30 (CEST)
 
Hall X2
Orals |
Tue, 14:00
Posters on site
Wed, 10:45
Fold-and-thrust belts and accretionary prisms are key geological features occurring all around the globe. They mostly develop along convergent plate boundaries although they may also form along passive margins or other super-critical slopes by a gravitationally driven stress field. Fold-and-thrust belts can display a varied range of scales, may involve the whole continental lithosphere or just the uppermost sedimentary cover and can differ in their spatial extent, longevity of their formation and the rock types involved. Their geometry and kinematic evolution strongly depend on an ample variety of parameters (rheology, temperature, surface processes, structural inheritance, mechanical stratigraphy…), the understanding of their effects being fundamental for the comparison of different fold-and-thrust belts and the development of common predictive models.
Fold-and-thrust belts have been intensely investigated, aiming to decipher their short- and long-term evolution. However, there are important questions that remain not fully understood: i) What is the effect of structural inheritance, décollements, syn-tectonic sedimentation and the interplay between them on mountain building processes? ii) How are transient and long-term rheological/mechanical characteristics and processes affecting the evolution of fold-and-thrust belts? iii) How can we better define deep orogenic geometries and better reconstruct the burial, thermal and kinematic evolution of orogens?
The here proposed session tackles these questions by considering a multidisciplinary approach. We look forward to receiving abstracts focusing on the short- and long-term dynamics and the geometry and structural evolution of fold-and-thrust belts by means of different methodological approaches, including (but not limited to) field structural geology, cross-section construction and balancing, 3D structural modelling, seismics and seismology, analogue and numerical modelling, rock mechanics, geomorphology, thermochronology and geophysics.

Orals: Tue, 25 Apr | Room K1

Chairpersons: Esther Izquierdo Llavall, Christoph von Hagke
14:00–14:05
5-minute convener introduction
Deformation mechanisms and strain distribution in folded and faulted rocks
EGU23-12156
|
On-site presentation
Deformation in carbonates and its contribution to fold & thrust belt architecture
Inga Boianju et al.
EGU23-13527
|
ECS
|
On-site presentation
Strata-dependent thrust localisation in multilayers
Phoebe Sleath et al.
Interaction between tectonics and sedimentation
Structural style and kinematics in fold-and-thrust belts
Coffee break
Chairpersons: Jonas B. Ruh, Olivier Lacombe
EGU23-16544
|
ECS
|
On-site presentation
Structural style variations along the Ionian fold and thrust belt
Marco Snidero et al.
EGU23-8370
|
solicited
|
On-site presentation
Salt-influenced fold-and-thrust belts: insights from experimental analog models
Pablo Santolaria et al.
Inheritance and basement architecture
EGU23-6654
|
ECS
|
On-site presentation
Alpine subduction and intraplate deformation along the Iberian Atlantic margins
Patricia Cadenas Martínez et al.
17:55–18:00
Discussion and session closing

Posters on site: Wed, 26 Apr, 10:45–12:30 | Hall X2

Chairpersons: Jonas B. Ruh, Esther Izquierdo Llavall
Analogue and numerical modelling
Interaction between tectonics and sedimentation
Structural style and kinematics in fold-and-thrust belts
EGU23-267
|
ECS
|
On-site presentation
A new crustal balanced cross-section through the Central Apennines (Italy)
Augusto Maresca et al.
EGU23-8509
|
On-site presentation
Gravity-constraint salt distribution and migration model in the South Pyrenean Central Salient
Pablo Santolaria Otín et al.
EGU23-15666
|
ECS
|
On-site presentation
Balancing a cross-section through the western Tauern Window using non-plane strain
Julia Rudmann et al.