untitled
<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd>
<responseDate>2018-01-17T12:03:39Z</responseDate>
<request identifier=oai:HAL:hal-01622715v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request>
<GetRecord>
<record>
<header>
<identifier>oai:HAL:hal-01622715v1</identifier>
<datestamp>2018-01-11</datestamp>
<setSpec>type:ART</setSpec>
<setSpec>subject:sdu</setSpec>
<setSpec>collection:CNRS</setSpec>
<setSpec>collection:UNIV-AG</setSpec>
<setSpec>collection:GM</setSpec>
<setSpec>collection:AGROPOLIS</setSpec>
<setSpec>collection:INSU</setSpec>
<setSpec>collection:B3ESTE</setSpec>
<setSpec>collection:UNIV-MONTPELLIER</setSpec>
</header>
<metadata><dc>
<publisher>HAL CCSD</publisher>
<title lang=en>The origin of the Palaeoproterozoic AMCG complexes in the Ukrainian shield: New U-Pb ages and Hf isotopes in zircon</title>
<creator>Shumlyanskyy, Leonid</creator>
<creator>Hawkesworth, Chris</creator>
<creator>Billstrom, Kjell</creator>
<creator>Bogdanova, Svetlana</creator>
<creator>Mytrokhyn, Oleksandr</creator>
<creator>Romer, Rolf</creator>
<creator>Dhuime, Bruno</creator>
<creator>Claesson, Stefan</creator>
<creator>Ernst, Richard</creator>
<creator>Whitehouse, Martin</creator>
<creator>Bilan, Olena</creator>
<contributor>M.P. Semenenko Institute of Geochemistry, Kiev</contributor>
<contributor>University of St. Andrews</contributor>
<contributor>Swedish Museum of Natural History, Stockholm</contributor>
<contributor>Lund University</contributor>
<contributor>Department of Geology [Kyiv] ; Taras Shevchenko National University of Kyiv</contributor>
<contributor>German Research Centre for Geosciences, Potsdam</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Carleton University</contributor>
<description>International audience</description>
<source>ISSN: 0301-9268</source>
<source>Precambrian Research</source>
<publisher>Elsevier</publisher>
<identifier>hal-01622715</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01622715</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01622715</source>
<source>Precambrian Research, Elsevier, 2017, 292, pp.216-239. 〈10.1016/j.precamres.2017.02.009〉</source>
<identifier>DOI : 10.1016/j.precamres.2017.02.009</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.precamres.2017.02.009</relation>
<language>en</language>
<subject lang=en>AMCG complexes</subject>
<subject lang=en>Hf isotopes</subject>
<subject lang=en>Proterozoic</subject>
<subject lang=en>Ukrainian shield</subject>
<subject lang=en>U-Pb geochronology</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>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.</description>
<date>2017-05</date>
</dc>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
