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Reply to comment on Díaz-Bravo et al. (2022)
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freetext keyword: Cretaceous-Paleogene magmatism; Farallon subduction process; Inland magmatism; Magmatism at central Mexico; Space-time distribution of magmatism Federal District [Mexico]; Mexico City; Mexico [North America]; Cretaceous; Eocene; magmatism; Mesozoic; P-T conditions; Paleocene; Paleogene; pluton; spatiotemporal analysis; uranium-lead dating
related by: authorship_74395
crisid: 12007
most specific type: Article
artnum: 104730
date time value: article date 12007
type: Document
has publication venue: Journal of South American Earth Sciences
abstract: The space-time analysis of the evolution of Cretaceous-Paleogene magmatism by Díaz-Bravo et al. (2022), identifies the development of a continuous magmatic arc along the continental margin, contradicting the migration of the arc towards the continent as a consequence of flattening of the Farallon plate (Damon et al., 1981). This magmatism was developed simultaneously in the interior of the continent and interrupted during the Paleocene. Consequently, our conclusions are not an adaptation of magmatic ages in the context of planar subduction as suggested by Chávez-Cabello and Ramírez-Peña (2023). Including U–Pb ages from a few missing Cretaceous plutons in our analysis do not change our model at all but enrich it. The study of regional deformation was not part of the objectives of our work, but we pointed out some issues about the temporality of magmatism and deformation previously documented, trying to prevent future misinterpretations. We show here that magmatism was emplaced at the beginning and end of the Late Cretaceous deformation phase of the Mexican Fold and Thrust Belt, and it was absent during the Paleocene-Eocene deformation stage. We ruled out tectonic transport of the Cretaceous plutons, or we think that it should be negligible considering how far (hundreds of kilometers) are these and other plutons from the paleo-trench. Furthermore, plutons such as Pico de Teyra were not located in the thin-skinned cover and others such as El Milagro and La Pólvora do not present deformation features. A large syn-tectonic displacement scenario should be changed dramatically the texture of these rocks, but large parts of these plutons preserve magmatic textures and some of them do not show evidence of deformation. Also, is very likely that the P-T conditions in such large transportation, would induce recrystallization and resetting of some isotopic systems (i. e., K–Ar) but it is not observed or has not been documented. We highlight the contributions we have made to the …
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related by: authorship_74394
doi: 10.1016/j.jsames.2023.104730
volume: 133
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Journal of South American Earth Sciences
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date: 2026-08-28T03:07:44
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