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Proceedings Paper

Application of GPR to ornamental rock quarry
Author(s): Paula L. F. da Rocha; Marcelo M. dos Anjos; Carlos J. de Abreu; Henrique Lorenzo; Adriano Caranassos; Rinaldo Marques
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Paper Abstract

This paper presents a geophysical survey, which is being carried out with the use of the Ground Penetrating Radar (GPR) in an ornamental rock quarry located at Santo Antonio de Pádua area, northwest of Rio de Janeiro State, Brazil. The quarry is settled in a milonitic rock belt. It is exploited the "olho de pombo" rock, which is in commercial demand, in Brazil and abroad. The purpose of the investigation is to test the applicability of the GPR technique in order to determine the thickness of the sterile material, and the fractures within the rock massif from where the rock blocks are taken. However it will be discussed the results of two radargrams obtained on the rock without altered cap rock The study is developed with the partnership of the Centro de Tecnologia (Mineral Technology Center - CETEM), which has a great experience in deals with ornamental rock research. The acquired data were processed with the use of the software GRADIX® (version 1 . 1 1 — Interpex) in order to enhance the anomalies and the stratigraphy it was generated originated sections, with average depth of 20 meters. In the surveys it was utilized 100 MHz frequency antennae. It is intended to build a work methodology for the local mining operator in order to contribute to reduce the environmental impact problems, which in general occur within this kind of activity. It was possible to identify the fractures and also the weathering cover thickness. Presently, the requirements of govemmental institutions, the environmental impact caused by ornamental rock mining, occupy increasing distinction within mineral exploiting industry. The survey presented higer quality results.

Paper Details

Date Published: 12 April 2002
PDF: 6 pages
Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); doi: 10.1117/12.462278
Show Author Affiliations
Paula L. F. da Rocha, Univ. Federal do Rio de Janeiro (Brazil)
Marcelo M. dos Anjos, Univ. Federal do Rio de Janeiro (Brazil)
Carlos J. de Abreu, Univ. Federal do Rio de Janeiro (Brazil)
Henrique Lorenzo, Univ. de Vigo (Spain)
Adriano Caranassos, Ctr. de Tecnologia Mineral (Brazil)
Rinaldo Marques, Geopesquisa (Brazil)


Published in SPIE Proceedings Vol. 4758:
Ninth International Conference on Ground Penetrating Radar

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