Shortening estimation in chevron with post flexion deformation

Regular Papers

https://doi.org/10.22201/cgeo.20072902e.2019.3.1493

Published 2019-11-30

Alberto Vásquez-Serrano⁺⁻
Gustavo Tolson⁺⁻
Elisa Fitz-Diaz⁺⁻
Peter Hudleston⁺⁻

Alberto Vásquez-Serrano

Centro de Geociencias, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Campus UNAM Juriquilla, Juriquilla, Querétaro, C.P. 76230, Mexico. Departamento de Procesos Litosféricos, Instituto de Geología, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica s/n, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico.

Gustavo Tolson

Departamento de Procesos Litosféricos, Instituto de Geología, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica s/n, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico.

Elisa Fitz-Diaz

Peter Hudleston

Departament of Geology and Geophysics, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, M.N., USA.

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Keywords

fold
shortening
dynamic deformation
flattening

How to Cite

Vásquez-Serrano, A., Tolson, G., Fitz-Diaz, E., & Hudleston, P. (2019). Shortening estimation in chevron with post flexion deformation. Revista Mexicana De Ciencias Geológicas, 36(3), 348–356. https://doi.org/10.22201/cgeo.20072902e.2019.3.1493

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Abstract

Folds are geological structures present in many tectonic environments, their geometry allows us to obtain a quantitative approximation of the deformation that they accommodated. Chevron folds are an important tool to estimate shortening in orogenic systems, due to their particular geometry. In spite of this, a method to calculate the amount of shortening (dynamic and kinematic) consistent with the theory of chevron folds has not been proposed. In this work, we propose a new method for the calculation of total shortening in chevron folds that have a post-buckling deformation based on the theoretical considerations of Ramsay (1974). Our method is conceptually simple and general, so that it can be applied to estimate the amount of shortening in the orogenic systems around the world.