GEOLOGICAL AND GEOPHYSICAL INTERPRETATION OF INDUCED POLARIZATION DATA ON GOLD DEPOITS IN THE YANA-KOLYMA OROGENIC BELT
A.V. Tkachev, I.M. Khasanov, T.I. Mikhalitsyna
N.A. Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch of the Russian Academy of Sciences, ul. Portovaya 16, Magadan, 685000, Russia
Keywords: Induced polarization, phase frequency response, two-frequency phase parameter graphitization, carbon metasomatism
Abstract
This paper presents induced polarization (IP) data on a number of gold deposits and occurrences in the Magadan Region. Geophysical works are effective for the study of gold-quartz deposits of different morphological types (vein, veinlet-vein, and veinlet-disseminated). It is shown that multifrequency IP sounding reliably identifies zones of carbon metasomatism, a reliable indicator of potential gold mineralization areas in northeastern Russia. Carbon metasomatism is the typical shape of phase frequency response curves for graphite and graphitized rocks.
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