Abstract

The research group GEOCANTABRICA, in collaboration with TerraDat, is developing a program for petrophysical characterization of rock that includes, among other properties, seismic velocities (P and S – waves), electromagnetic conductivity, magnetic susceptibility, electrical chargeability and resistivity, as well as density (porosity) and mechanical properties. Some of the materials we work with show anisotropic behavior to some of these properties. Our analysis aims to determine which microstructural component controls the anisotropic behavior, whether mineral orientation, compositional banding or microfracturing. The petrophysical analysis must underlie the development of exploration strategies in the field, since it allows to identify which methods are best suited for ore exploration. Prior knowledge of physical properties of rock materials under study, for instance their anisotropy or their structural control, will facilitate the design of exploration strategies. For our petrophysical work we collaborate with several of the industries operating in northwestern Spain, which provided the samples for laboratory work, either in blocks or in core samples. We have so far studied roofing slates, dolostones, limestones and several types of sandstones (for instance, quartzarenites and iron rich sandstones).

About the speaker

Sergio Llana is a professor at the University of Oviedo (Spain) specialized in Structural Geology and Tectonics. He is a researcher from the GEOCANTABRICA research group which in collaboration with TerraDat are developing a program for the petrophysical characterization of rocks applied to mineral exploration.