Abstract
This paper presents a new instrument in geological exploration, which uses historical geophysical data for the indication of potential zones of the occurrence of Cu-Ag ore, based on the example of the newly discovered Nowa Sól deposit in south-western Poland. Basic historical seismic and gravimetric data were applied along with transformed maps. The new method of effective reflection coefficients (ERC) allowed the utilization of archival seismic records for a more precise determination of the most vaguely traced interfaces within the Permian Zechstein unit. Compared to an amplitude-based seismic section, an ERC section is characterized by its highly increased resolution of imaging. The tracing of changes in the facies and the tectonics of Zechstein sediments, particularly in a zone of their contact with Rotliegend rocks, along with the new ERC method, enabled the establishing of precise locations of prospecting boreholes. The combined use of ERC and historical well logs also allowed more precise identification of the shape of oxidized areas and the adjacent orebodies.
Highlights
A new direction of research involving the use of historical geophysical data for the indication of prospective zones of Cu-Ag ore is presented based on the example of the newly documented Nowa Sól deposit (Figure 1).At the first stage of its exploration project in the Nowa Sól, Jany, Wilcze and Zatonie concession areas, Miedzi Copper Corp. (MCC, Vancouver, BC, Canada; with a local office in Warsaw, Poland) performed extended analyses of existing historical geophysical data
The new effective reflection coefficients (ERC) method was proposed as a means to trace the potential zones of Cu-Ag ore [1,2,3]
The analysis enabled the construction of a tectonic model of the area, The ERC
Summary
A new direction of research involving the use of historical geophysical data for the indication of prospective zones of Cu-Ag ore is presented based on the example of the newly documented Nowa Sól deposit (Figure 1).At the first stage of its exploration project in the Nowa Sól, Jany, Wilcze and Zatonie concession areas, Miedzi Copper Corp. (MCC, Vancouver, BC, Canada; with a local office in Warsaw, Poland) performed extended analyses of existing historical geophysical data. A new direction of research involving the use of historical geophysical data for the indication of prospective zones of Cu-Ag ore is presented based on the example of the newly documented Nowa Sól deposit (Figure 1). (MCC, Vancouver, BC, Canada; with a local office in Warsaw, Poland) performed extended analyses of existing historical geophysical data. The quality of these abundant data did not allow their direct application to ore prospecting. The locations of prospecting boreholes (Figure 2) were established after the reprocessing of geophysical data based on this new methodology. Comparison of the results of ERC and the drilled boreholes confirmed the usefulness of its application
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