A multidisciplinary UAV- And ground-geophysical mapping of complex mineralisations in an inter-tidal coastal Zone, Brittany (France)

A. Døssing, G. Martelet, T. Mac K. Rasmussen, E. Gloaguen, E. Lima Simões da Silva, J. Linde

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Abstract

Getting reliable geophysical and geological 3D models of the subsurface is an absolute necessity for successful resources exploration. Here, we show how novel UAV-borne geophysical mapping can be extremely valuable for mapping potential new exploration areas that are difficult to access by foot, such as hard rock inter-tidal zones and boulder beaches. We show the results from a multidisciplinary geophysical campaign of highly magnetic dikes and granites along a boulder beach in Brittany, France. Our mapping is carried out using customized geophysical sensor systems with high quality sensors. These include in particular a special designed UAV-towed magnetometer bird and multispectral system for large area mapping purposes. The UAV-borne mapping is supplemented by ground-based gamma-ray spectrometry data and ground-based magnetic gradiomety data. The results clearly demonstrate the value of UAV-borne systems in difficult areas as compared to traditional mapping methods as well as the value of combining various geophysical sensors for exploring the economic geology. All UAV-borne data were collected during two days, while the groundbased data - covering only the inner and dry part of the beach - were collected over seven days.
Original languageEnglish
Title of host publicationProceedings of the 3rd Conference on Geophysics for Mineral Exploration and Mining
PublisherEuropean Association of Geoscientists and Engineers
Publication date2020
Pages1-5
ISBN (Print)9789462823570
DOIs
Publication statusPublished - 2020
Event3rd Conference on Geophysics for Mineral Exploration and Mining (NSG2020) - Online
Duration: 7 Dec 20208 Dec 2020

Conference

Conference3rd Conference on Geophysics for Mineral Exploration and Mining (NSG2020)
LocationOnline
Period07/12/202008/12/2020

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