Mp Semenenko Institute Of Geochemistry

Kiev, Ukraine

Mp Semenenko Institute Of Geochemistry

Kiev, Ukraine
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Shumlyanskyy L.,Mp Semenenko Institute Of Geochemistry | Hawkesworth C.,University of St. Andrews | Hawkesworth C.,University of Bristol | Billstrom K.,Swedish Museum of Natural History | And 10 more authors.
Precambrian Research | Year: 2017

The Ukrainian shield hosts two Palaeoproterozoic anorthosite-mangerite-charnockite-granite (AMCG) complexes (the Korosten and Korsun-Novomyrhorod complexes) that intruded Palaeoproterozoic continental crust in north-western and central parts of the shield, respectively. We report results of U-Pb zircon and baddeleyite dating of 16 samples from the Korosten plutonic complex (KPC), and 6 samples from the Korsun-Novomyrhorod plutonic complex (KNPC). Fifteen zircon samples from both complexes were also analysed for Hf isotopes. These new, together with previously published data indicate that the formation of the KPC started at c. 1815 Ma and continued until 1743 Ma with two main phases of magma emplacement at 1800–1780 and 1770–1758 Ma. Each of the main phases of magmatic activity included both basic and silicic members. The emplacement history of the KNPC is different from that of the KPC. The vast majority of the KNPC basic and silicic rocks were emplaced between c. 1757 and 1750 Ma; the youngest stages of the complex are represented by monzonites and syenites that were formed between 1748 and 1744 Ma. Both Ukrainian AMCG complexes are closely associated in space and time with mantle-derived mafic and ultramafic dykes. The Hf isotope ratios in the zircons indicate a predominantly crustal source for the initial melts with some input of juvenile Hf from mantle-derived tholeiite melts. The preferred model for the formation of the Ukrainian AMCG complexes involves the emplacement of large volumes of hot mantle-derived tholeiitic magma into the lower crust. This resulted in partial melting of mafic lower-crustal material, mixing of lower crustal and tholeiitic melts, and formation of ferromonzodioritic magmas. Further fractional crystallization of the ferromonzodioritic melts produced the spectrum of basic rocks in the AMCG complexes. Emplacement of the ferromonzodioritic and tholeiitic melts into the middle crust and their partial crystallization caused abundant melting of the ambient crust and formation of the large volumes of granitic rocks present in the complexes. © 2017 Elsevier B.V.

Ponomar V.P.,Mp Semenenko Institute Of Geochemistry | Dudchenko N.O.,Mp Semenenko Institute Of Geochemistry | Brik A.B.,Mp Semenenko Institute Of Geochemistry
Journal of Magnetism and Magnetic Materials | Year: 2017

Thermal decomposition of Bakal siderite ore (that consists of magnesium siderite and ankerite traces) was investigated by thermomagnetic analysis. Thermomagnetic analysis was carried-out using laboratory-built facility that allows automatic registration of sample magnetization with the temperature (heating/cooling rate was 65°/min, maximum temperature 650 °C) at low- and high-oxygen content. Curie temperature gradually decreases with each next cycles of heating/cooling at low-oxygen content. Curie temperature decrease after 2nd cycle of heating/cooling at high-oxygen content and do not change with next cycles. Final Curie temperature for both modes was ~320 °C. Saturation magnetization of obtained samples increases up to 20 Am2/kg. The final product of phase transformation at both modes was magnesioferrite. It was shown that intermediate phase of thermal decomposition of Bakal siderite ore was magnesiowustite. © 2016 Elsevier B.V.

Shumlyanskyy L.,Mp Semenenko Institute Of Geochemistry | Ernst R.E.,Carleton University | Soderlund U.,Lund University | Soderlund U.,Swedish Museum of Natural History | And 3 more authors.
GFF | Year: 2016

The palaeoproterozoic Northwestern region of the Ukrainian shield hosts two compositional types of mafic dykes and associated magmatism that intruded at c. 1800–1760 Ma: (1) high-Ni dolerite dykes and layered intrusions of tholeiitic affinity and (2) high-Ti dolerite dykes of jotunitic affinity associated with anorthosite–mangerite–charnockite–granite (AMCG) suites. The jotunitic dykes represent initial melts for basic rocks of the Korosten AMCG plutonic complex, whereas tholeiitic dykes may reflect emplacement of a mantle plume and formation of a large igneous province (LIP). New U–Pb baddeleyite ages indicate that both compositional types can be coeval: the jotunitic Rudnya Bazarska dyke was emplaced at 1793 ± 3 Ma, and the Zamyslovychi tholeiitic dolerite dyke at 1789 ± 9 Ma. In our model, the mantle plume-derived tholeiitic melts (underplate) supplied heat required for melting of the mafic lower crust and the production of jotunitic melts. As formation of the jotunite melts requires pressures in the range 10–13 kbar, either a thickened crust is needed or the lower crust must be subducted, or downthrusted, into the mantle. Alternatively, emplacement and ponding of large volume of tholeiitic melts might cause delamination of the lower crust, its sinking into the mantle, and further fusion to produce jotunitic melts. © 2016 Geologiska Föreningen.

Zhukov M.,Taras Shevchenko National University | Kurajeva I.,Mp Semenenko Institute Of Geochemistry | Vojtyuk Yu.,Mp Semenenko Institute Of Geochemistry | Stakhiv I.,Taras Shevchenko National University | Matviienko O.,Mp Semenenko Institute Of Geochemistry
14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, Geoinformatics 2015 | Year: 2015

Conducted comprehensive assessment of Mariupol soil contamination by heavy metals. The level of soil contamination remains high, the main source of pollution is the steel industry. Established that the most man-made metals are Zn and Cu.Method of principal components was used to identify factors that influence of soil contamination.

Claesson S.,Swedish Museum of Natural History | Bibikova E.,RAS Vernadsky Institute of Geochemistry and Analytical Chemistry | Shumlyanskyy L.,Swedish Museum of Natural History | Shumlyanskyy L.,Mp Semenenko Institute Of Geochemistry | And 3 more authors.
Geological Society Special Publication | Year: 2015

The oldest crust in the Ukrainian Shield occurs in the Podolian and Azov domains, which both include Eoarchaean components. U-Pb age data for Dniestr-Bug enderbites, Podolian Domain, indicate that these are c. 3.75 Ga old, and Lu-Hf isotope data indicate extraction from chondritic to mildly isotopically depleted sources with εHf up to c. +2. Nd model ages support their Eoarchaean age, while model ages for Dniestr-Bug metasedimentary gneisses indicate that these also include younger crustal material. Most of the Hf-age data for metasedimentary zircon from the Soroki greenstone belt, Azov Domain, reflects Eoarchaean primary crustal sources with chondritic to mildly depleted Hf isotope signatures at 3.75 Ga. A minor portion is derived from Mesoarchaean crust with a depleted εHf signature of c. +4 at 3.1 Ga. U-Pb zircon ages from Fedorivka greenstone belt metasediments are consistent with the Soroki age data, but also include a 2.7-2.9 Ga component. Nd whole rock model ages provide support for a younger crustal component in the latter. Both domains have been subject to Neoarchaean, c. 2.8 Ga, and Palaeoproterozoic, c. 2.0 Ga, metamorphism. The spatial distribution indicates that the Podolian and Azov domains evolved independently of each other before the amalgamation of the Ukrainian Shield. © The Geological Society of London 2015.

Shumlyanskyy L.,Mp Semenenko Institute Of Geochemistry | Shumlyanskyy L.,Swedish Museum of Natural History | Hawkesworth C.,University of St. Andrews | Dhuime B.,University of St. Andrews | And 4 more authors.
Precambrian Research | Year: 2015

The results of simultaneous LA-ICP-MS measurements of 207Pb/206Pb and Hf isotope ratios are reported for zircons separated from five Ukrainian shield sedimentary rocks: (1) c. 3.0Ga quartzite of the Bug Series; (2) c. 2.0Ga quartzite of the Topilnya Series; (3) c. 1.75Ga quartzite of the Ovruch Series; (4) c. 1.2-1.0Ga sandstone of the Polissya Series; and (5) c. 0.6Ga conglomerate of the Volyn Series. The age-Hf isotope (eHfT) data indicate four main crustal growth events at 3.75, 3.20-3.15, 2.2-2.0, and 1.5Ga in the south-western part of the East European craton (EEC). An additional rather minor event could have place at 2.5-2.4Ga. The oldest event is represented by enderbites of the Bug domain in the south-western part of the Ukrainian shield. The second crust-forming event occurred at c. 3.20-3.15Ga and it is documented by detrital zircons separated from the Bug Series quartzite and metasediments of the Soroki greenstone belt, Azov domain. A small number of zircons with positive eHfT values reveal some input of the juvenile material into the crust at 2.5-2.4Ga, whereas the 2.2-2.0Ga event is dominated by zircons with positive eHfT values. The youngest event is represented by numerous zircons that crystallized at c. 1.5Ga. The possible sources of these zircons are the rock complexes of the south-western part of the Fennoscandian shield. © 2015.

Claesson S.,Swedish Museum of Natural History | Bibikova E.V.,RAS Vernadsky Institute of Geochemistry and Analytical Chemistry | Shumlyanskyy L.,Swedish Museum of Natural History | Shumlyanskyy L.,Mp Semenenko Institute Of Geochemistry | And 2 more authors.
Precambrian Research | Year: 2016

Zircon occurs as a minor constituent in most differentiated magmatic rocks. Its robustness to later modification means that its isotopic and chemical composition generally records conditions prevailing when it formed, and the systematic changes in the oxygen isotope record of zircon through geological time have been used to trace the temporal evolution of crust-mantle interaction and intra-crustal recycling. Here we present U-Pb, Hf, and oxygen isotopic compositions for high grade metamorphic Archean rocks from the Dniester-Bug Series, western Ukrainian Shield. Zircon from a quartz-dominated rock is up to 3.8Ga old, and enriched in 18O compared to most previously reported values from Archean zircon. Similar values are recorded in zircon cores, which exhibit a variety of internal textures including magmatic-style oscillatory zonation, and rims. If this rock is metasedimentary and the isotope signatures in cores are primary, the zircon sources were characterized by heavier oxygen isotopic compositions than any known major area of Archean crust. Alternatively the O isotope compositions have been modified. We show that a large fraction of the analyzed zircon appear not to be modified by radiation damage, and speculate that O exchange may have taken place by diffusion during extreme metasomatic alteration of the host rock. The possibility that igneous-looking, apparently unaltered zircon may not preserve a primary oxygen isotope signature has implications for its use in the interpretation of crustal evolution, including early terrestrial geodynamics. © 2015 Elsevier B.V.

Sheremet E.,Mp Semenenko Institute Of Geochemistry | Burakhovich T.,Institute of Geophysics of NAS of Ukraine | Nikolaev I.,Mp Semenenko Institute Of Geochemistry | Shirkov B.,Institute of Geophysics of NAS of Ukraine
14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, Geoinformatics 2015 | Year: 2015

Deposits and occurrences of rare, precious, radioactive metals, phosphorus, titanium and other minerals that are spatially and genetically related to the distribution of ore-bearing metasomatic rocks and differentiated intrusions were predicted according to the results of geoelectric research of the Ukrainian Shield.

Bondarenko B.,Gas Institute of NAS of Ukraine | Sviatenko O.,Gas Institute of NAS of Ukraine | Kotov V.,Gas Institute of NAS of Ukraine | Khovavko A.,Gas Institute of NAS of Ukraine | And 3 more authors.
International Journal of Energy for a Clean Environment | Year: 2013

In the present work, there are studied new approaches that would give the possibility to receive continuously carbon nanotubes. As the basic technology was used the process at moderate temperatures (in the range of a kinetic-thermodynamic maximum of passing of the Bell-Boudoir reaction). Products of natural gas air conversion with strictly controllable hydrogen, carbon, and oxygen potentials were used in a role of reactionary gas. Also, a possibility of carbon nanotubes manufacturing from a generator gas was explored. Maximum output of a final product has been achieved on an iron ore concentrate of the Inguletzky ore mining and processing enterprise (Krivoy Rog, Ukraine), which was used among many in the capacity of the catalyst of carbon nano-tubes formation. © 2013 by Begell House, Inc.

Dudchenko N.O.,Mp Semenenko Institute Of Geochemistry
Materialwissenschaft und Werkstofftechnik | Year: 2011

Biogenic magnetite serve for a wide range of biological functions, including the orientation of animals in the space and also play an important role in the brain functioning. We describe the synthesis and characterization of magnetite nanoparticles that are the synthetic analogues of biogenic magnetite. Magnetite nanoparticles were prepared via co-precipitation of iron (II) and iron (III) with sodium hydroxide in aqueous solution at high temperature (80°C). To avoid the oxidation of the magnetite surface, further covering of the magnetite nanoparticles with (3-aminopropyl)triethoxysilane was performed. The obtained magnetite nanoparticles had a comparatively high magnetization (45 A·m2/kg) and crystallinity. The average diameter of synthesized magnetite nanoparticles was around 14 nm. We could conclude that the characteristics of the synthesized magnetite nanoparticles (size, phase composition, magnetic properties) are similar to biogenic magnetite. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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