Temporal and spatial evolution of orogens: a guide for geological mapping - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Article Dans Une Revue Episodes Journal of International Geoscience Année : 2022

Temporal and spatial evolution of orogens: a guide for geological mapping

Résumé

Orogens develop in convergent settings involving two or more continental and/or oceanic plates. They are traditionally defined as zones of crustal deformation associated with mountain building resulting from either accretion of a terrane and/or an arc, continent-continent collision or rift-inversion. However, this definition does not consider the genetic link between an oceanic domain and an intracontinental rift, even though extension associated with a scissor-shape opening can be demonstrated in many oceanfloored basins. Consequently, we propose a new concept of orogenic evolution based on the development of extensional margins subsequently subjected to crustal shortening. Thus orogens that develop as a result of the closure of wide basins, are distinguished from mountain belts developed above subduction zones or that result from continental collision and inverted intra-continental rifts. Our review of several key orogens identifies similarities and differences in geodynamic processes through geological time including prior to the onset of plate tectonics ca. 2.5 Ga. We propose that mapping based on comparative tectonics is a good way to constrain such an evolution, and that this can start with a global-scale map of past-to-modern orogens aimed at re-exploring mountain building concepts spatially and temporarily. This is the primary objective of IGCP 667 project “World Map of Orogens”
Fichier principal
Vignette du fichier
IUGS045-03-265.pdf (20.09 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04279931 , version 1 (17-05-2024)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Camille François, Manuel Pubellier, Christian Robert, Cédric Bulois, Siti Nur Fathiyah Jamaludin, et al.. Temporal and spatial evolution of orogens: a guide for geological mapping. Episodes Journal of International Geoscience, 2022, 45 (3), pp.265-283. ⟨10.18814/epiiugs/2021/021025⟩. ⟨hal-04279931⟩
5 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More