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DTSTART;VALUE=DATE:20201104
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SUMMARY:Novel methods of Geophysical Exploration of Mineral Deposits
DESCRIPTION:Exploration and raw materials resource assessment. \nProgramme\nContext of the Course (two parts): \n1. Seismic and Rock Physics for Reservoir/Deposit-Quality Prediction:\nSeismic is a non-destructive/non-intrusive exploration method with a long history (originally derived from earthquake seismology). Driven by the gas/oil industry\, it has developed rapidly. The larger and deeper the object/reservoir\, the better the seismic method works. The step to “shallow seismic” (depth < 500m) is therefore non-trivial and requires rethinking. The lecture explains the basic principles (and common pitfalls) using real-world examples.\nThe insight is deepened by looking beyond the horizon: (i) we establish the link to rock physics (geology)\, (ii) we combine seismic with other exploration methods (CSAMT\, ERT\, etc.) to an “integrative geological survey” (the corresponding mathematics is known as “Joint Inversion”). \n2. Borehole Geophysics explained by case studies for U and general ore exploration:\nConventional geological interpretation relies on both down-hole logging data from logging tools (usually\, a selected suite of tools) and the inspection of drill cuttings. Core drilling/assaying is much more expensive\, but provides detailed information with regard to geochemistry\, mineralogy\, morphology and other characteristics. A new borehole logging tool called OreLog combines the prompt-fission neutron (PFN) measuring principle with geophysical\, lithological and mineralogical data logging as well as inclination. 10 neutron detectors operating in multi-scaling (time-resolving) mode and a high-performance γ-ray spectrometer (CeBr3 scintillator) are used to deduce the following parameters of the formation: accurate PFN U grade (pU3O8) corrected for several influencing factors\, γ-spectrum based U grade (eU3O8)\, macroscopic neutron cross section (comparable to conventional neutron log)\, hydrogen index / porosity (comparable to conventional resistivity)\, deduced hydraulic permeability\, density\, neutron scattering potential\, clay indicator\, lithological category (deduced from the above geophysical parameters by cluster analysis)\, elemental concentrations (Si\, O\, Fe\, S\, Ca\, (C)\, Al\, K\, and others)\, mineral abundances (SiO2\, kaolinite/clay\, pyrite\, other Fe minerals\, calcite\, lignite\, and others)\, and borehole radius. \nTarget Group\nMSc-students in mining exploration\, (economic) geology\, geophysics. \nDeadline\nTuesday\, November 3\, 2020
URL:https://old.eitrawmaterials.eu/events/novel-methods-of-geophysical-exploration-of-mineral-deposits/
LOCATION:Online
CATEGORIES:CLC East
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