Melts and fluids evolution in the process of crust and mantle formation in Paleo-Proterozoic (2,2—1,75 Ga ago). Stratigraphy and magnetic activity

O. V. Usenko


Stratigraphy of metamorphic Precambrian complexes related to Paleo-Proterozoic is controversial. An additional sign permitting to correlate strata may be their material composition because in the Precambrian composition of deep fluids changed regularly. Then some regularity in changes of composition of magmatic and metamorphic rocks has to exist. The rocks produced during this time are dolomite and calcite. Quartzite, carbonaceous shist and graphite gneiss are also abundant. Only during this activation of Precambrian carbonatite volcanic activity became apparent.

The author’s method has been used generalizing the special features of magmatic and metamorphic rocks of the Ukrainian shield, which allowed reconstructing the course of the deep process and composition of melts and fluids in the layer of melting. Subdivision of the shield into blocks of two types has been proposed: inherent blocks and the areas spatially attached by suture zones.

The blocks differ by decisive role of the fault zones formed before granitization; the presence of gabbro-montsonite-trachite granites  massifs formed before granitization (2,1—1,99 Ga ago); mutual transitions between intusive and palingenous granites; formation of anorthosite-granite massifs after granitization. Activation consists of two tectono-magmatic cycles separated by granitization. Composition of rocks attached to suture zones is effected by oxidized deep melts and fluids.

We can make estimation on geodynamic process and composition of deep fluids in blocks by composition of magmatic rocks. In blocks fault zones are generated with multiple intrusion of melts along them, differentiated under the crust. Neutral-alkalescent aquatic-chloride-potassium fluids take part in differentiation of melts.

Composition of fluids changes after granitization under the whole shield. Immediately after it the massifs of carbonatites and alkaline rocks are formed where alkaline ultrabasites are also present. In the territories attached to suture zones carbonate ferruginous layers appear, which include xenocrysts.

In blocks in places of intersection of sub-longitudinal and sub-latitudinal zones, in relict foci mixing of melts takes place diluted by aquatic-chloride-potassium fluids and added deep carbonate-fluoride-sodium ones. Massifs of anorthosites-rapakivi-granites with titanium are formed. They are accompanied by pegmatite fields, albite-uranium metasomatites when joint participation of carbonate-fluoride-sodium and aquatic fluids is required.


Ukrainian shield; carbonatites; Paleo-Proterozoic; granitization; fluid; evolution; iron deposits; magmatic activity; stratigraphy; asthenosphere; lithosphere


Bordunov I. N., 1983. Krivoy Rog-Kursk eugeosynclines. Kiev: Naukova Dumka, 304 p. (in Russian).

Verkhoglyad V. M., Skobelev V. M., 1995. Isotopic age subvolcanic district of Novograd Volyn (northwestern part of the Ukrainian shield). Geokhimiya i rudoobrazovaniye (is. 21), 47—56 (in Russian).

Geological and geophysical model Golovanevsk suture zones of the Ukrainian Shield, 2008. Ed. A. V. Antsiferov. Donetsk: Weber, 308 p. (in Russian).

Geological and geophysical model Nemirov-Kocherovsk suture zones of the Ukrainian Shield, 2009. Ed. A. V. Antsiferov. Donetsk: Weber, 253 p. (in Russian).

Geological and geoelectrical model Orekhovo-Pavlograd suture zones of the Ukrainian Shield, 2005. Ed. N. Ya. Azarov. Kiev: Naukova Dumka, 190 p. (in Russian).

Geochronology Early Precambrian of the Ukrainian Shield. Archaea, 2005. Ed. N. Shcherbak. Kiev: Naukova Dumka, 244 p. (in Russian).

Geochronology Early Precambrian of the Ukrainian Shield. Proterozoic, 2008. Ed. N. Shcherbak. Kiev: Naukova Dumka, 240 p. (in Russian).

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

Gintov O. B., Entin V. A., Mychak S. V., Pavlyuk V. N., Zyul’tsle V. V., 2016. Structural and petrophysical and tectonophysical base of geological map of crystalline basement of the central part of Golovanevsk suture zone of the Ukrainian Shield. Geofizicheskiy zhurnal 38(3), 3—28 (in Russian).

Glevasskiy E. B., Krivdik S. G., 1981. Precambrian carbonatite complex of the Azov region. Kiev: Naukova Dumka, 228 p. (in Russian).

Gordienko V. V., 2007. Advection-polymorphous hypothesis underlying processes in tectonosphere. Kiev: Korvіn Press, 170 p. (in Russian).

Entin V. A., Gintov O. B., Mychak S. V., Yushin A. F., 2015. The structure of the Moldovan iron ore deposit (Ukrainian shield) according geological and geophysical data and its possible endogenous nature. Geofizicheskiy zhurnal 37(4), 3—18 (in Russian).

Ferruginous-siliceous formations of the Ukrainian shield, 1978. Ed. N. P. Semenenko. Vol. 1. Kiev: Naukova Dumka, 328 p. (in Russian).

Zlobenko I. F., Kanevskiy A. Ya, Metalidi S. V., Dusyatskiy V. A., Lepigov G. D., 1983. Komatiites Middle Bug (Ukrainian shield). Sovetskaya geologiya (9), 103—108 (in Russian).

Kadik A. A., Lukanin O. A., Portnyagin A. L., 1990. Magma formation at the upward movement of mantle material: the temperature and composition of the melts formed during adiabatic decompression ultramafic mantle. Geokhimiya (9), 1263—1276 (in Russian).

Kovalenko V. I., Ionov D. A., Yarmolyuk V. V., Yaguts E., Lyugmayr G., Shtosh Kh. G., 1990. Evolution of the mantle and its correlation with the evolution of the earth's crust some areas of Central Asia on the isotope data. Geokhimiya (10), 1308—1319 (in Russian).

Kogarko L. N., 2005. Role of deep fluids in the genesis of mantle heterogeneities and alkaline magmatism. Geologiya i geofizika 46(12), 1234—1245 (in Russian).

Metallic and nonmetallic minerals of Ukraine. Vol. 1. Metallic minerals, 2005. Ed. N. P. Shcherbak. Kiev-Lvov: Tsenter Evropy, 785 p. (in Russian).

Pashkevich I. K., Bakarzhieva M. I., 2016. Mafic dykes of Ingul megablock (Ukrainian Shield): relationship of surface and deep structures of the lithosphere, fault tectonics and geodynamics. Geofizicheskiy zhurnal 38(5), 49—66 (in Russian).

Petrology, geochemistry and ore-bearing intrusive granitoids of the Ukrainian shield, 1990. Ed. I. B. Shcherbakov. Kiev: Naukova Dumka, 236 p. (in Russian).

Petrology and Geochemistry charnockitoids Ukrainian Shield, 2011. Ed. O. M. Ponomarenko. Kiev: Naukova Dumka, 216 p. (in Ukrainian).

Ponomarenko A. N., Stepanyuk L. M., Shumlyanskiy L. V., 2014. Geochronology and Geodynamics of the Paleoproterozoic of the Ukrainian Shield. Mineralogicheskiy zhurnal 36(2), 48—58 (in Russian).

Starostenko V. I., Lukin A. E., Tsvetkova T. A., Shymlanskaya L. A., 2014. Geofluids and up-to-date display of activization Ingul megablock Ukrainian Shield. Geofizicheskiy zhurnal 36(5), 2—25 (in Russian).

Stratigraphic sections of the Precambrian Ukrainian Shield, 1985. Ed. K. E. Esipchuk. Kiev: Naukova Dumka, 168 p. (in Russian).

Usenko O. V., 2013. Development of the Ingul megablock of the Ukrainian Shield during the period of formation of the Novo-Ukrainian and Korsun-Novomirgorod pluton. Geofizicheskiy zhurnal 35(3), 54—69 (in Russian).

Usenko O. V., 2003. Precambrian carbonatite complex of the Azov region. Dopovidi NAN Ukrainy (6), 115—122 (in Russian).

Usenko O. V., 2002. Heat flux and contemporary activation of the Donets Basin. Geofizicheskiy zhurnal 24(5), 102—111 (in Russian).

Usenko O. V., 2015. Conditions of formation of ferruginous rocks of the Middle Bug. Geofizicheskiy zhurnal 37(4), 32—50 (in Russian).

Usenko O. V., 2014. Forming Melts: geodynamic processes and physical and chemical interactions. Kiev: Naukova Dumka, 240 p. (in Russian).

Usenko O. V., 2016a. Evolution of melts and fluids as a reflection of the crust and mantle formation by the example of the Middle Dnieper megablock of the Ukrainian Shield. Archean. Geofizicheskiy zhurnal 38(2), 35—56 (in Russian).

Usenko O. V., 2016b. Evolution of melts and fluids during the crust and mantle formation in Neo-Archean—Paleo-Proterozoic. Stratigraphic effects. Geofizicheskiy zhurnal 38(6), 40—63 (in Russian).

Fortov V. E., Khrapak A. G., Yakubov I. T., 2004. Physics nonideal plasma. Moscow: Fizmatlit, 528 p. (in Russian).

Shcherbak N. P., Zagnitko V. N., Artemenko G. V., Bartnitskiy E. N., 1995. Geochronology of of large geological events in the Azov block of the Ukrainian Shield. Geokhimiya i rudoobrazovaniye 21, 112—129 (in Russian).

Shcherbakov I. B., 2005. Petrology of the Ukrainian shield. Lviv: ZuKTs, 366 p. (in Russian).

Endogenous sources of ore matter, 1991. Ed. F. V. Chukhrov. Moscow: Nauka, 248 p. (in Russian).

Yaroshchuk M. A., 1983. Iron formation Belotserkovsk-Odessa metallogenic zone. Kiev: Naukova Dumka, 224 p. (in Russian).

Condie K. C., 2011. Earth and evolving planetary system. Elsevier, 574 p.

Girnis A. V., Brey G. P., Ryabchikov I. D., 1995. Origin of Group 1A kimberlites: Fluid- saturated melting experiments at 45—55 kbar. Earth Planet. Sci. Lett. 134, 283—296. doi: 10.1016/0012-821X(95)00120-2.

Ionov D. A., Doucet L. S., Carlson R. W., Golovin A. V., Korsakov A. V., 2015. Post-Archean formation of the lithospheric mantle in the central Siberian craton: Re-Os and PGE study of peridotite xenoliths from the Udachnaya kimberlite. Geochim. Cosmochim. Acta. 165, 466—483.

Lobach-Zhuchenko S. B., Balagansky V. V., Baltybaev Sh. K., Bibikova E. V., Chekulaev V. P., Yurchenko A. V., Arestova N. A., Artemenko G. V., Egorova Yu. S., Bogomolov E. S., Sergeev S. A., Skublov S. G., Presnyakov S. L., 2014. The Orekhov-Pavlograd zone, Ukrainian Shield: Milestones of its evolutionary history and constraints for tectonic models. Precambrian Res. 252, 71—87. doi: 10.1016/j.precamres.2014.06.027.

Liu J., Riches A. J. V., Pearson G., Luo Y., Kienlen B., Kjarsgaard B. A., Stachel Th., Armstrong J. P., 2016. Age and evolution оf the deep Continental root beneath the central Rae craton, Northern Canada. Precambrian Res. 272, 168—184. doi: 10.1016/j.precamres.2015.11.001.

Walter M. J., 1998. Melting of garnet peridotite and the origin of komatiite and depleted lithosphere. J. Petrol. 39(1), 29—60.



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