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Geoinformatika 2017; 3(63) : 48-55  (in Ukrainian)

GEO-ELECTRIC STUDY OF ENGINEERING-GEOLOGICAL CONDITION OF SOUTHWESTERN KRYVBAS. Part 4: Use of potential fields in the study of modern tectonics

P.I. Pigulevskiy1,2, V.K. Svystun1, O.S. Kyryliuk3

1Dnepropetrovsk geophysical expedition “Dneprogeofizika” SGE “Ukrgeofizika”, 1, Geophysical Str., Dnipro, 49057, Ukraine, e-mail: dpge@ukr.net
2Institute of Geophysics, National Academy of Sciences of Ukraine, 32, Palladin Ave., Kyiv, 03680, Ukraine, e-mail: pigulev@ua.fm
3Institute for Nature Management Problems and Ecology of NAS of Ukraine, 6, Moscovskaya Str., Dnipro, 49000, Ukraine, e-mail: ippe-main@svitonline.com

Goal and tasks. A joint analysis of the results of different geo-electric studies and potential physical fields for the study of modern tectonic and geodynamic processes in the southwestern part of Krivbass in solving environmental safety and agricultural purposes.
Method. Calculation and creating of maps of the gravitational field and its local component for the analysis of the fea­tures of the geological structure of the crystalline basement and sedimentary cover of the territory of the southwestern part of Krivbass. Isolation of rupture tectonics, raised and lowered foundation blocks. Performing a joint interpretation of geoelectric and gravimetric materials to determine the relationship between changes in the geoelectric parameters of the geological environment and the time-space changes in the hydrogeological situation, caused by active tectonic disturbances and geodynamic processes occurring in the upper part of the earth’s crust.
Results. Interpretation of the local component of the gravitational field made it possible to establish in the study area the distribution of fault directions corresponding to the fault system by K.F. Tyapkin. Constructed maps based on the results of qualitative and quantitative interpretation of electrical exploration of the VES and the local component of the gravitational field made it possible to obtain additional information on the structure of the water-bearing complex and their relationship with filtration waters from dumps, tailing ponds and storage ponds. On these maps, together with the results of previous studies, it was possible to clarify and specify the hydrogeological features of the investigated area both in space and over a four-year period (from 2008 till 2012).
Practical significance and conclusions. The proposed research technology allows us to quickly detect and map the zones of underflooding by geoelectrical methods in a comprehensive study of the influence of the technosphere on the geological environment of Kryvbas, to map the degree of interconnection between surface and groundwater with filter flows from dumps, tailing ponds and storage ponds in solving environmental safety and agricultural planning problems.

Keywords: Krivorozhsky iron ore basin, modern tectonics, hydrogeological state, gravitational field, geoelectric re­sistance.

The full text of papers will be available after 01/04/2019

References:

  1. Pigulevskiy P.I., Svystun V.K. Kyryliuk, O.S. Geoelectric study of engineering-geological condition of southwestern Kryvbas. Part 1: Physical and geological background. Geoinformatika, 2016, no. 3 (59), pp. 69-75 (in Ukrainian).
  2. Pigulevskiy P.I., Svystun V.K., Kyryliuk, O.S. Geoelectric study of engineering-geological condition of southwestern Kryvbas. Part 2: The results of the application of geoelectric methods in the survey of flooding areas. Geoinformatika, 2016, no. 4 (60), pp. 62-74 (in Ukrainian).
  3. Pigulevskiy P.I., Svystun V.K., Kyryliuk, O.S. Geoelectric study of engineering-geological condition of southwestern Kryvbas. Part 3: The results of the application of geoelectric methods in solving geotechnical problems. Geoinformatika, 2017, no. 2 (62), pp. 55-63 (in Ukrainian).
  4. Pigulevskyy P.G., Svistun V.K., Mechnikov Yu.P., Kyrylyuk O.S., Lisovoy Yu.V. Features of disjunctive tectonics of Krivoy Rog iron ore area. Geophysical journal. 2016. no. 5 (38), pp. 154-163 (in Ukrainian).
  5. The current dynamics of relief Ukraine. Ed. V.P. Paliienko. Kyiv, Naukova Dumka, 2005. – 267 p. (in Ukrainian).
  6. Tjapkyn K.F., V.N. Gontarenko. Sistemy razlomov Ukrainskogo shсhita [The fault system of the Ukrainian shield]. K. F. Tjapkin, V. N. Gontarenko. Kyiv, Naukova Dumka, 1990. – 184 p. (in Russian).