DOI: https://doi.org/10.24028/gzh.0203-3100.v39i1.2017.94010

Three-dimensional geoelectric model of the Golovanevsk suture zones of the Ukrainian Shield

B.I. Shyrkov, Т.К. Burakhovich, A.N. Kushnir

Abstract


Thorough three-dimensional deep model has been plotted for the first time for the Golovanivsk suture zone of the Ukrainian shield and adjacent area applying Mtd3fwd R. L. Mackie's program based on geophysical experiment as MTS and MVP investigations. Anomalies of electro-conductivity in the Earth crust coinciding spatially with deep fault zones have been allocated. It has been confirmed that outside the limits of the GSZ heterogeneous earth crust and upper mantle are both observed. It has been shown that the areas of anomalously high resistance partially correspond to massifs of crystalline rocks (the Uman, the Korsun-Novomirgorod, the Novo-Ukrainian) in the Earth's crust and upper mantle.

Anomalies of high electrical conductivity with ρ = 2 ¸ 250 Ohm · m in the crust have been revealed, which coincide with deep fault zones: Talne, Pervomaisk, Vradievka, Gvozdavka, Zvenigorod-Bratsk, Simla, Subbotsko-Moshorinka; which are represented up to the depths of 2,5 km by sub-vertical structures and deeper — mainly by sub-horizontal layers. Outside the GSZ heterogeneous earth crust and upper mantle are observed as regional Chernivtsi-Korosten and Kirovograd anomalies of electro-conductivity.

The geological structure of the GSZ and its electrical conductivity confirm the collision model of crust formation of the central part of the Ukrainian shield. The low resistivity anomalies are confined to the elongated stripes and areas of abundance of the graphitized rocks and metasomatic zones extended along the fault zones. Within their boundaries most part of ore deposits and ore manifestations in the region are found.

The obtained distribution of electrical conductivity in the Earth's crust and upper mantle of Golovanivsk suture zone can be used for the plotting of deep geological and tectonic models and predictive metallogenic maps and schemes of the USh, as well as for an explanation of geodynamic processes in the region.


Keywords


the Golovanivsk suture zone; 3D geoelectric model; MT/MV methods; deep structure; collision

References


Burakhovich Т. К., Caniyev O. Z., Shyrkov B. I., 2015a. Modeling of the deep structure Golovanivsk suture zone according the geoelectric data. Visnyk Kyivskogo universytetu. Ser. Ceologiya (2), 48—54 (in Ukrainian).

Burakhovich Т. К., Kushnir A. N., Shyrkov В. I., 20156. Deep structure of the Ingul megablock according to the data of the geoelectric studies. Dopovidi NAN Ukrainy (3), 81—86 (in Ukrainian).

Burakhovich Т. К., Nikolaev I. Yu., Sheremet E. M., Shirkov B. I., 2016. Anomalies of electrical conductivity according to results of threc-dimensional geoelectrical modeling and minerals of the central part of the Ukrainian Shield. Vestnik Permskogo universiteta. Ser. Geologiya (3), 47—56 (in Russian).

Burakhovich Т. К., Nikolaev I. Yu., Sheremet E. M., Shirkov B. I., 2015. Geoelectric anomalies of the Ukrainian Shield and their relation to mineral deposits. Ceofizicheskiy zhumal 37(6), 42—63 (in Russian).

Verkhovtsev V. H., Yuskiv Yu. V., Shvayko V. H., Shevchuk V. I., 2013. The total amplitude Late Pliocene-Quaternary vertical movements of the earth surface of the Ukrainian Shield and its slopes. Tekhnogenno-ekologichna bezpeka ta tsyvilnyy zakhyst (is. 6), 38—52 (in Ukrainian).

Geological-geophysical model Golovanevsk suture zones of the Ukrainian Shield, 2008. Ed. N. Ya. Azarov. Donetsk: Veber, 305 p. (in Russian).

Gintov O. B., 2005. Field tectonophysics and its application for the studies of deformations of the Earth's crust of Ukraine. Kiev: Feniks, 572 p, (in Russian).

Gintov O. B., 2015. Problems of geodynamics of the Ukrainian Shield in Precambrian. Geofizicheskiy zhurnal 37(5), 3—22 (in Russian).

Gintov O. B., 2014. Scheme of faulting periodization in the Earth's crust of the Ukrainian Shield — new data and consequences. Geofizicheskiy zhurnal 36(1), 3—18 (in Russian).

Glevasskiy E. B., Kalyaev G. I., 2000. Tectonic of the Precambrian of the Ukrainian Shield. Mineralogicheskiy zhurnal 22(2/3), 77—91 (in Russian).

Gordienko V. V., Gordienko I. V., Zavgorodnyaya О. V., Kovachikova S., Logvinov I. M., Tarasov V. N., Usenko О. V., 2005. Ukrainian Shield (geophysics, deep processes). Kiev: Korvin press, 210p. (in Russian).

Zhamaletdinov A. A., Kulik S. N., 2012. First-rate anomalies of electro-conductivity on the Globe. Geofizicheskiy zhurnal 34(4), 22—39 (in Russian).

lngerov A. I., 1988. Map of magnetic parameters of MTS and MVP of the southeastern part of the Ukrainian Shield. Ukrgeolforid (in Russian).

lngerov A. I., Rokityanskiy I. I., 1993. Ukrainian Shield. The lithosphere of Central and Eastern Europe: Summary of the studies. Kiev: Naukova Dumka, 257 p. (in Russian).

The Kirovograd ore area. Deep structure. Tectonophysical analysis. Ore deposits, 2013. Eds V. I. Starostenko, О. B. Gintov. 500 p. (in Russian).

Kulik S. N., Burakhovich Т. К., 2007. Three-dimensional geoelectric model of the Earth's crust of the Ukrainian Shield. Fizika Zemli (4), 21—27 (in Russian).

Nechaev S. V., Naumov G. B., 1998. Regional mineralization zonation of the Ukrainian Shield: modern reconstruction plan and paleotectonic. Geology of Ore Deposits 40(2), 109—120 (in Russian).

Nikolaev I. Yu., Burakhovich Т. К., Sheremet E. M., 2013. Three-dimensional geoelectric model of the Kirovograd ore area of the central part of the Ukrainian Shield. Geofizicheskiy zhurnal 35 (4), 127— 139 (in Russian).

Pashkevich I. K., Bakarzhieva M. I., 2013. 3D magnetic model of the Korsun-Novomirgorod pluton and the Novoukrainka massifs and its geological interpretation. Geofizicheskiy zhurnal 35 (4), 115—126 (in Russian).

Rokityansky I. I., Tereshin A. V., Tregubenko V. I., Golubtsova N. S., lngerov A. I., Savchenko T. S., 2012. Review of observations MVP—MTS in the southern part of the Kirovograd electrical conductivity anomaly and an experiment of thin film modeling of the Ukrainian Shield structure. Geofizicheskiy zhurnal 34(3), 92—101 (in Russian).

Smirnov V. P., 1971. Relationships between the surface and deep structures of the Earth's crust. Kiev: Naukova Dumka, 245—253 (in Russian).

Starostenko V. I., Gintov О. В., Kutas R. I., 2011. Geodynamic development of lithosphere of Ukraine and its role in formation and location of mineral deposits. Geofizicheskiy zhurnal 33(3), 3—22 (in Russian).

Tsymbal S. N., 2002. The composition of the upper mantle beneath the Ukrainian Shield. In: Geology and magmatism of the Precambrian of the Ukrainian Shield. Ed. M. P. Shcherbak. Kiev, 215— 218 (in Russian).

Sheremet E. M., Krivdik S. G., Burakhovich Т. К., 2013. The criteria for ore prospecting in the subduction areas of the Ukrainian Shield. Deutshland, Germany: LAP LAMBERT Academic Publ. 418 p. (in Russian).

Shcherbak N. P., Bibikov E. V., Skobelev V. M., Shcherbak D. N., 2003. The time evolution and metallogenic specialization of Early Precambrian crust of the Ukrainian Shield (3.7—1.7 billion years old). Mineralogicheskiy zhurnal 25(4), 82—92 (in Russian).

Shcherbakov I. B., 2005. Petrology of the Ukrainian Shield. Lvov: ZUKTS, 364 p. (in Russian).

Baysorovich M. M., Tregubenko V. Iv., Nasad A. G., 1998. Geoelectric heterogeneities of Ukraine's lithosphere. Geologicheskiy zhurnal 2(1), 23—35.

Birt C. S., Maguire P. K. H., Khan M. A., Thybo H., Keller G. R., Patel J., 1997. The influence of preexisting structures on the evolution of the southern Kenya Rift Valley: Evidence from seismic and gravity studies. Tectonophysics 278, 211—242.

Galetskiy L., 2009. "Geotrans" — a planetary geo- dynamic system of transcontinental ore-concentrating activation megazones. New Concepts in Global Tectonics Newsletter (52), 40—50.

Khoza T. D., Jones A. G., Müller M. R., Evans R. L., Miensopust M. P., Webb S. J., 2013a. Lithospheric structure of an Archean craton and adjacent mobile belt revealed from 2D and 3D inversion of magnetotelluric delta: Example from southern Congo craton in northern Namibia. J. Geophys. Res. 118, 4378—4397.

Khoza T. D., Jones A. G., Müller M. R., Evans R. L., Webb S. J., Miensopust M. P. the SAMTEX team 1, 20136. Tectonic model of the Limpopo belt: Constraints from magnetotelluric data. Precambrian Res. 226, 143—156.

Mackie R. L., Booker J., 1999. Documentation for mtd3fwd and d3-to-mt. GSY-USA Inc., 2261 Market St., Suite 643, San Francisco, CA 94114.

Selway K., Sheppard S., Thorne A., Johnson S., Groenewald P., 2009. Identifying the lithospheric structure of a Precambrian orogen using magnetotellurics: The Capricorn Orogen, Western Australia, Precambrian Res. 168, 185—196.

Spratt J. E., Jones A. G., Jackson V. A., Collins L., Avdeeva A., 2009. Lithospheric geometry of the wop- may orogen from slave craton to bear province magnetotelluric transect. J. Geophys. Res. 114(B1). doi:10.1029/2007JB005326.

Wannamaker P., 2005. Anisotropy versus heterogeneity in continental solid Earth electromagnetic studies: fundamental response characteristics and Implications for physicochemical state. Surv. Geophys. 26(6), 733—765.

Wannamaker P., 1997. Comment on "The petrologic case for a dry lower crust" by Bruce W. D. Yardley and John W. Valley. J. Geophys. Res. 105, 6057— 6064. http://dx.doi.org/10.1029/1999JB900324.




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