Geoelectrical Characteristics of Gold-Ore Deposits of the Upper Priamurye Region
Tóm tắt
The results of measurements of the electrical properties of rocks and induced polarization surveying are analyzed for three gold-ore deposits including the Bamskoe, Berezitovoe, and Pokrovka in the Upper Priamurye region. The spatial correlation is shown between mineralization zones and contrasting resistivity boundaries mapped within the gold-ore fields. The assumption is validated that the blocks of high-resistivity rocks have minimal permeability and therefore they were able to act as screens affecting the hydrodynamic features of the hydrothermal system at the stages of deposit formation and at the stages of mineralization formation. This makes such geoelectrical boundaries an important element for exploration, which should be accounted for when interpreting electric prospecting data. The induced polarization survey establishes a diverse interpretation of the polarizability anomalies within the gold-ore fields and a lack of correlation between ranges of increased induced polarization values and gold-ore mineralization. Methods for evaluating polarizability anomalies are proposed.
Tài liệu tham khảo
Bam Gold Deposit: Geology, Mineralogy, Geochemistry, Ed. by V. A. Stepanov, V. E. Strikha, A. A. Cheremisin, (Dal’nauka, Vladivostok, 1998) [in Russian].
A. A. Bobachev, A. A. Gorbunov, I. N. Modin, and V. A. Shevnin, “Electrical tomography by method of resistance and induced polarization,” Pribory Sistemy Razvedochnoi Geofiziki, No. 2, 14–17 (2006).
V. P. Valyaev, Candidate’s Dissertation in Geology and Mineralogy (Irkutsk, 1990).
N. A. Voroshilov and L. N. Voroshilova, “Application of thermomagnetic geochemical method (TMGM) in prospecting ore deposits,” Method of Interpretation of Results of Lithochemical Prospecting (Nauka, Moscow, 1987) [in Russian].
Geological Medium and Structural Conditions of Hydrothermal Ore Formation (Nauka, Moscow, 1982) [in Russian].
G. V. Gurin, Yu. T. Il’in, A. V. Tarasov, and K. V. Titov, “Spectral characteristics of induced polarization of disseminated ores,” Vestn. St. Petersb. Univ., Ser. 7. Geol. Geograph., No. 1, 14—30 (2013).
A. P. Karasev, A. B. Ptitsin, and E. Yu. Yuditskikh, Rapid Transitional Processes of Induced Polarization (Nauka, Novosibirsk, 2005) [in Russian].
A. V. Mel’nikov and V. A. Stepanov, Ore-Placer Clusters of the Southern Amur Gold-Bearing Province (AmGU, Blagoveshchensk, 2013) [in Russian].
A. V. Mel’nikov and V. A. Stepanov, Ore-Placer Clusters of the Amur Gold Province. Part 2. Central Part of the Province (AmGU, Blagoveshchensk, 2014) [in Russian].
A. V. Mel’nikov and V. A. Stepanov, Ore-Placer Clusters of the Amur Gold Province. Part 3. Northern Part of the Province (AmGU, Blagoveshchensk, 2015) [in Russian].
M. Yu. Nosyrev, Candidate’s Dissertation in Geology and Mineralogy (ITiG DVO RAN, Khabarovsk, 1993).
M. Yu. Nosyrev, A. V. Varnavsky, I. Yu. Gromakovskii, et al., Forecasting Estimate of the Amur area for Ore Gold by Study of Geophysical Methods of Deep Structure of Gold Districts and Development of Physicogeological Models of Gold Deposits,” Report of 1995–2000 (FGUGP “Amurgeologiya”, Blagoveshchensk, 2000) [in Russian].
M. Yu. Nosyrev, “Geophysical characteristics of the Bam gold deposit (Upper Amur region) and their application in predicting and prospecting of gold,” Tikhookean. Geol. 35 (6), 69–80 (2016).
Petrophysics. A Textbook. Book 3. Rocks and Mineral Resources (Nedra, Moscow, 1982), p. 391 [in Russian].
N. N. Petruk, M. N. Shilova, S. A. Kozlov, et al., State Geological Map of the Russian Federation. 1 : 1 000 000. Third Generation. Sheet N-51 (Skovorodino). Explanatory Note (St. Petersburg, 2008) [in Russian].
Application of Geoelectrochemical Mehods for Gold Prospecting at the Olimpiada Deposit. Presentation. http://www.myshared.ru/slide/1271405/
Yu. A. Ryss, Geoelectrochemical Prospecting Methods. (Introduction in Geoelectrochemistry) (Nedra, Leningrad, 1983) [in Russian].
S. B. Skrepinskii, Extended Abstract of Candidate’s Dissertation in Geology and Mineralogy (Leningrad, 1990).
V. A. Stepanov, A. V. Mel’nikov, A. S. Vakh, et al., Amur Gold Province (AmGU, NIGTTs DVO RAN, Blagoveshchensk, 2008) [in Russian].
B. L. Stolov, Candidate’s Dissertation in Geology and Mineralogy (Vladivostok, 1997).
B. L. Stolov and N. G. Shkabarnya, “State and prospects of the development of ore geophysics in Primorye,” Vestn. DVO RAN, No. 2, 47–63 (2001).
B. L. Stolov and A. M. Samchenko, “Assessment of efficiency of method of partial extraction of metals (PEM) during prospecting of gold deposits,” Vologdinskie Readings (DVFU, Vladivostok, 2007), vol. 67, pp. 14–21 [in Russian].
B. L. Stolov, “Appraised geophysical methods and their role in prospecting and exploration works in Primorye,” Vologdinskie Readings (DVFU, Vladivostok, 2008), Part 8, pp. 14–21 [in Russian].
A. V. Tarasov, G. V. Gurin, A. E. Kaminskii, and B. N. Mukhammadiev, “Spectral characteristics of induced polarization of the ore zone of the Sukhoi Log deposit,” in Application of Modern Electrical Exploration Technologies during Prospecting of Mineral Deposits. Proceedings of 12th International Geophysical Scientific-Practical Seminar, St. Petersburg, Russia, 2015 (St. Petersburg, 2015), pp. 46–49 [in Russian].
Tectonics, Deep Structure, and Metallogeny of the Junction Zone of the Central Asian and Pacific Belts. Explanatory Notes to Tectonic Map. 1 : 1 500 000, Ed. by L. P. Karsakov, Ch. Chzhao, and M. V. Goroshko (DVO RAN, Vladivostok–Khabarovsk, 2005) [in Russian].
K. V. Titov, CR-SIP. Complex Resistance (CR) or Spectral Induced Polarization (SIP). Presentation. http://present5.com/cr-sip-kompleksnoe-soprotivlenie-cr-ili-spektralnaya.
A. I. Fertikov, I. I. Baksheeva, E. A. Burdakova, and A. A. Plotnikova, “Modification of thermomagnetic geochemical method using magnetic-colloid treatment of samples,” Gorn. Inform.-Analit. Byull., No. 6, 300—306 (2015).
M. B. Shtokalenko, S. G. Alekseev, N. A. Voroshilov, N. P. Senchina, and S. Yu. Shatkevich, “Substantiation of the application of geoelectical methods during prospecting of deep-seated ore deposits,” Razved. Okhr. Nedr, No. 6, 25–29 (2018).
L. V. Eirish, Gold Metallogeny of the Amur Region (Dal’nauka, Vladivostok, 2002) [in Russian].