Hydrothermal silicification and dolomitization in fault system, Irecê Basin (Brazil) - implication for reservoir properties

V. la Bruna, F. Bezerra, F. Balsamo, C. Menezes, G. Bertotti, J. Lamarche, P. Richard, F. Agosta, C. Pontes

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientific

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Abstract

The carbonate rocks exposed in the Irecê (Brazil) are pervasively affected by hydrothermal silicification and dolomitization. These mineralizing events drastically changed the original petrophysical properties of the host rock. In order to understand the role played by deformation mechanisms and tectonic evolution of these carbonates on the ingression of the mineralizing fluids, we focused our study on the mineralogical, petrographic, stratigraphic, structural and geochemical characterization of the faulted Neoproterozoic carbonates of the Salitre Formation, central Brazil. In this contribution, we present the first results of a combined outcrop- to micro-scale investigation of the structural evolution of the fracture network responsible for hydrothermal silicification and dolomitization processes.

Original languageEnglish
Title of host publicationFourth Naturally Fractured Reservoir Workshop
PublisherEAGE
Number of pages5
DOIs
Publication statusPublished - 2020
Event4th Naturally Fractured Reservoir Workshop 2020 - Ras Al Khaimah, United Arab Emirates
Duration: 11 Feb 202013 Feb 2020

Conference

Conference4th Naturally Fractured Reservoir Workshop 2020
CountryUnited Arab Emirates
CityRas Al Khaimah
Period11/02/2013/02/20

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