Petrophysical zoning elements of Chertovo Koryto gold-ore deposit (Patom Upland, Eastern Siberia)

19th International Scientific Symposium in honor of Academician M.A. Usov "Problems of Geology and Subsurface Development"

Sokolov, S.V.^1 ; Kolmakov, Y.V.^1 ; Terre, D.A.^2

Department of Geophysics, Institute of Natural Resources, National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^1

Department of Foreign Languages, Institute of Natural Resources, National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^2

关键词: Carbon bearing;    Eastern Siberia;    Electrode potentials;    Gold ore deposits;    Magnetic anomalies;    Multi stage;    Petrophysical;    Potential indicators;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/27/1/012028/pdf
DOI  :  10.1088/1755-1315/27/1/012028

来源: IOP

【 摘 要 】

The paper considers magnetic susceptibility (χ) and electrode potentials (EP) of rocks in the Chertovo Koryto deposit. Carbon-bearing substance is found in all the studied samples, but in some cases, this substance supplies EP (-150 ÷ -400 mV). In these samples χ rarely exceeds 40•10-5SI units, while, in other samples χ is 8-10 (up to 30) times higher. Less intensive EP (-20 ÷ -240 mV) is furnished due to the sulfides in this deposit. Rocks with polarized carbon-bearing substance do not contain magnetic pyrrhotine and are negative linear EP anomalies. Rocks in which carbon-bearing substance is associated with pyrrhotine are revealed as magnetic anomalies. The adjacent rocks determine petrophysical zoning of the Chertovo Koryto deposit. The combination of negative linear EP anomalies and magnetic anomalies is a potential indicator and can define the multi-stage formation of the deposit itself.