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Preparation Study Based on Borehole Data for Delphi-Distomon Mining Area to Better Design Geophysical WorksGreen Open Access

Authors: C. Orfanos, K. Leontarakis, G. Apostolopoulos, K. Athanassas and P. Kofakis
Event name: 2nd Conference on Geophysics for Mineral Exploration and Mining
Session: 3D Modelling and Inversion for Mining and Mineral Exploration Methods I
Publication date: 09 September 2018
DOI: 10.3997/2214-4609.201802710
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.7Mb )

Summary:
Europe is in need of fresh aluminum for its vast variety of developments and Greece has the potential to deliver. Delphi Distomon S.A is one of the largest bauxite producers in Greece and is interested to explore new deposits in new unexploited areas. Logistics, accessibility, environmental issues and high cost are key obstacles in the application of a high-definition 3D active seismic survey. Hence, an alternative integrated method of exploration will be carried out based on gravity, magnetotelluric and passive seismic methods. As a preliminary step for an optimized acquisition scheme, a dynamical approach is followed that utilizes a lithology model created by available drilling data, its transformation to a density one, the forward modelling and the comparison of the synthetic data with a previous gravity study in the area. The preliminary results of the analysis gave the chance to identify the vulnerabilities of the lithology and the equivalent geophysical model. As it was observed, they should be enriched during the survey with additional geological information and in situ observations. The emerged models can contribute remarkable to the stage of the processing of the different geophysical methods as well as the final stage of the integrated interpretation.

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