Exercise 4‌

The following image is a photograph of the Pirambóia Sandstone located in southern Brazil. The photograph was taken by Danilo Amendola in 2011 and donated to the authors for this book.

 

A picture containing outdoor, nature, dry Description automatically generated

Pirambóia Sandstone located in southern Brazil. (Photograph by Danilo Amendola, 2011)

 

The Pirambóia Sandstone is an important aquifer in Brazil. This sandstone is well known as the major recharge source for the Guarani aquifer and has been intensively studied and cataloged across southern Brazil. Based on this picture, identify some of the predominant fracture/disconformity-related structures, and describe their potential importance for groundwater studies/dynamics.

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Fractures and Faults in Sandstone and Sandstone-Shale/Mudstone Sequences and Their Impact on Groundwater Copyright © 2023 by Atilla Aydin, Ramil Ahmadov, Marco Antonellini, John Cherry, Antonino Cilona, Shang Deng, Eric Flodin, Ghislain de Joussineau, Beth Parker and Jian Zhong. All Rights Reserved.