The Revista Mexicana de Ciencias Geológicas allows all authors to hold the copyright of the material included in their contributions.

All works are published in Open Access under the terms of a Creative Commons license: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0).

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 You are free to download, display and print the files of this web site. Under some conditions you can to copy and distribute any paper only for personal or classroom use:

• You must give the original author credit (attribution).

• You may not use this work for commercial purposes (Non commercial).

• Any use of the web files and its content other than as authorized under this copyright declaration is prohibited.