%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Brichau, Stéphanie
%A Witt, C.
%A Bermudez, M. A.
%A Fillon, C.
%A Gautheron, C.
%A Carter, A.
%T Exhumation and topographic evolution of the Chiapas Massif Complex (southern Mexico) constrained by thermochronologic data modeling along vertical profiles
%D 2023
%L fdi:010088228
%G ENG
%J Global and Planetary Change
%@ 0921-8181
%K Chiapas Massif Complex ; Fault system ; Thermochronology ; Numerical modeling ; Topographic change ; Closing zipper model
%K MEXIQUE
%M ISI:001023522300001
%P 104159 [42 ]
%R 10.1016/j.gloplacha.2023.104159
%U https://www.documentation.ird.fr/hor/fdi:010088228
%> https://www.documentation.ird.fr/intranet/publi/2023-08/010088228.pdf
%V 227
%W Horizon (IRD)
%X 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 Tonal & PRIME;a 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.
%$ 064 ; 020