Variation in structural styles within fold-and-thrust belts: Insights from field mapping, cross-sections balancing, and 2D-kinematic modelling in the Jura mountains (Eastern France)

Hybrid thrust sequences – A new structural perspective

“…The role of multiple detachment horizons on the dynamics of thrust systems (i.e., its strength and thickness) and the evolution of fold-and-thrust belts such as the Zagros (e.g., Sepehr et al, 2006;Sherkati et al, 2006;Vergés et al, 2011;Farzipour Saein and Koyi, 2016;Ghanadian et al, 2017b;Derikvand et al, 2018;Heydarzadeh et al, 2020Heydarzadeh et al, , 2021Koyi and Mansurbeg, 2021), the Jura Mountains (e.g., Schori et al, 2015;Smeraglia et al, 2021), the Pyrenees (e.g., Koyi and Sans 2006), the Northern Apennines of Italy (e.g., Massoli et al, 2006;Tavarnelli et al, 2019), US and Canadian Rocky Mountains (e.g., Bally et al, 1966;Fitz-Díaz et al, 2011), the southern Appalachian thrust belt (e.g., Rich, 1934;Thomas, 2019), and the Mexican fold-and-thrust belt (e.g., Higuera-Díaz et al, 2005;Fitz-Díaz et al, 2011;Cruz et al, 2019) have shown that deformation may be decoupled between different stratigraphic levels. This is of importance because the geometry, kinematics and mechanics of fold-and-thrust belts are strongly influenced by the geometric parameters and mechanical behaviour of detachments (Ruh et al, 2012(Ruh et al, , 2013Feng et al, 2015;Eslamirezaei et al, 2022).…”

An integrated evaluation approach on dry hole analysis: A case study of Ballat anticline, Naccowlah Block, Eromanga Basin, Queensland, Australia

“…Consequently, a geometric restoration or forward model may be formally admissible (Elliott, 1983) but physically impossible. To constrain the deep structural styles of fold-and-thrust belts, a valid structural geology interpretation should be consistent with available outcrop and subsurface data (exploration well and seismic data), deformation conditions within of the study area, the mechanical stratigraphy, the occurrence and depth of different décollement horizons, and the presence of inherited structures (Balestra et al, 2019;Butler, 1983;Cooper & Trayner, 1986;Dahlstrom, 1969;Granado, Roca, Strauss, Pelz, & Muñoz, 2019;Hossack, 1979;Smeraglia, Fabbri, & Choulet, 2021;Tavani et al, 2018). In the study area an approach integrating geological mapping (from regional to outcrop scale) and structural analyses with cross-section balancing was carried out to unravel the palaeostructural and stratigraphic styles and major events of generation and migration and pathways within the sedimentary sequence.…”