Title :

Exhumation and topographic evolution of the Chiapas Massif Complex (southern Mexico) constrained by thermochronologic data modeling along vertical profiles

Author(s) :

Brichau, Stephanie [Auteur]
Géosciences Environnement Toulouse [GET]
Witt, César [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Bermúdez, Mauricio [Auteur]
Universidad Pedagógica y Tecnológica de Colombia [UPTC]
Fillon, Charlotte [Auteur]
Géosciences Environnement Toulouse [GET]
Gautheron, Cécile [Auteur]
Géosciences Paris Saclay [GEOPS]
Carter, Andrew [Auteur]
Birkbeck College [University of London]

Journal title :

Global and Planetary Change

Pages :

104159

Publisher :

Elsevier

Publication date :

2023-08

ISSN :

0921-8181

English keyword(s) :

Chiapas Massif Complex, Fault system, Thermochronology, Numerical modeling, Topographic change, Closing zipper model

HAL domain(s) :

Planète et Univers [physics]/Sciences de la Terre

English abstract : [en]

Thermochronometry is used to better understand the processes responsible for Cenozoic magmatism and exhumation of the Chiapas Massif Complex that spans a diffuse triple junction between the Caribbean, North American and ...
Show more >Thermochronometry is used to better understand the processes responsible for Cenozoic magmatism and exhumation of the Chiapas Massif Complex that spans a diffuse triple junction between the Caribbean, North American and Cocos plates. A combination of zircon U-Pb, apatite fission tracks, (U-Th)/He as well as numerical modeling show contrasting histories. Exhumation started earlier in the south (~16 Ma) relative to the north (~9 Ma). Northern exhumation is related to activity on the Tonalá fault system, while to the south it may be correlated with transpressive deformation in Chiapas fold-and-thrust belt. The southern block also experienced significant topographic growth from ~5 Ma to ~1 Ma followed by intense erosion. Overall, the pattern of uplift agrees with the ‘closing zipper’ model in which a forearc sliver is progressively incorporated to the North American plate. Thermal models also support a Pleistocene decrease in topography consistent with independent paleoenvironmental and geomorphologic evidence.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL