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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">12776</article-id><article-id pub-id-type="doi">10.31857/S0869-56524845579-583</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Geology</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Геология</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Kumystin granosyenites complex of the late Cryogenian in Bolshoi Karatau (South Kazakhstan), age substantiation</article-title><trans-title-group xml:lang="ru"><trans-title>Кумыстинский граносиенитовый комплекс позднего криогения в большом Каратау (Южный Казахстан), обоснование возраста</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Degtyarev</surname><given-names>K. E.</given-names></name><name xml:lang="ru"><surname>Дегтярев</surname><given-names>К. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the RAS</p></bio><bio xml:lang="ru"><p>Член-корреспондент РАН</p></bio><email>degtkir@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tretyakov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Третьяков</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>degtkir@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Salnikova</surname><given-names>E. B.</given-names></name><name xml:lang="ru"><surname>Сальникова</surname><given-names>Е. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>degtkir@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kotov</surname><given-names>A. B.</given-names></name><name xml:lang="ru"><surname>Котов</surname><given-names>А. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>degtkir@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Geological Institute RAS Research Organization of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Геологический институт Российской Академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт геологии и геохронологии докембрия Российской Академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-05-16" publication-format="electronic"><day>16</day><month>05</month><year>2019</year></pub-date><volume>484</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>579</fpage><lpage>583</lpage><history><date date-type="received" iso-8601-date="2019-05-21"><day>21</day><month>05</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-05-21"><day>21</day><month>05</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/12776">https://journals.eco-vector.com/0869-5652/article/view/12776</self-uri><abstract xml:lang="en"><p>The results of U–Pb geochronological studies of quartz syenites of the Kumystin complex of the Bolshoi Karatau ridge in southern Kazakhstan are presented and their late Neoproterozoic (717 ± 4 Ma) age is substantiated. Kumystin syenites complex together with rhyolites and basalts of the Kainar Formation are the youngest formations taking part in the basement of Karatau-Dzhebagly precambrian massif and formed in the second half of Cryogenian. The data set about the ages of the youngest complexes taking part in the basement of precambrian massifs of the Western part of the Central Asian belt indicates that the ending of magmatic activity within various massifs occurred asynchronously during the Neoproterozoic.</p></abstract><trans-abstract xml:lang="ru"><p>Приведены результаты геохронологических U–Pb-исследований кварцевых сиенитов кумыстинского комплекса хребта Большой Каратау в Южном Казахстане и обоснован их поздненеопротерозойский (717 ± 4 млн лет) возраст. Показано, что сиениты кумыстинского комплекса вместе с риолитами и базальтами кайнарской свиты — наиболее молодые образования, входящие в состав фундамента Каратау-Джебаглинского докембрийского массива, формирование которых завершилось во второй половине криогения. Совокупность данных о возрастах наиболее молодых комплексов фундамента докембрийских массивов западной части Центрально-Азиатского пояса свидетельствует, что завершение магматической активности в пределах различных массивов происходило асинхронно на протяжении неопротерозоя.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Bolshoi Karatau</kwd><kwd>Late Cryogenian</kwd><kwd>syenites</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Большой Каратау</kwd><kwd>поздний криогений</kwd><kwd>сиениты</kwd></kwd-group><funding-group><award-group><award-id></award-id></award-group><funding-statement xml:lang="ru">Исследования выполнены за счёт средств Российского научного фонда, проект № 14–27–00058.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Геология и металлогения Каратау. Т. 1. Геология / Под ред. И.Ф. Никитина. Алма-Ата: Наука, 1986. 240 с.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Киселев В.В., Королев В.Г. Тектоника докембрия Средней Азии и Центрального Казахстана. Фрунзе: Илим, 1972. 79 с.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Ранний докембрий Центрально-Азиатского складчатого пояса. СПб.: Наука, 1993. 270 с.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Cohen K.M., Finney S.C., Gibbard P L., Fan J.X. The ICS International Chronostratig. Chart // Episodes. 2013. V. 36. № 3. Р. 199–204.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Degtyarev K., Yakubchuk A., Tretyakov A., Kotov A., Kovach V. Precambrian Geology of the Kazakh Uplands and Tien Shan: an Overview // Gondwana Res. 2017. V. 47. P. 44–75.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Krogh T.E. A Low-Contamination Method for Hydrothermal Decomposition of Zircon and Extraction of U and Pb for Isotopic Age Determination // Geochim. et Cosmochim. acta. 1973. V. 37. P. 485–494.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Ludwig K.R. PbDat for MS-DOS. Vers. 1.21 // U.S. Geol. Surv. Open-File Rept 88–542. 1991. 35 p.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Ludwig K.R. Isoplot 3.70. A Geochronological Toolkit for Microsoft Excel // Berkeley Geochronol. Center Spec. Publ. 2003. V. 4. 74 p.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Stacey J.S., Kramers I.D. Approximation of Terrestrial Lead Isotope Evolution by a Two-Stage Model // Earth Planet. Sci. Lett. 1975. V. 26. № 2. P. 207–221.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Steiger R.H., Jager E. Subcomission of Geochronology: Convension of the Use of Decay Constants in Geo- and Cosmochronology // Earth Planet. Sci. Lett. 1976. V. 36. № 2. P. 359–362.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Windley B.F., Alexeiev D., Kroner A., Badarch G. Tectonic Models for Accretion of the Central Asian Orogenic Belt // J. Geol. Soc. Amer. 2007. V. 164. P. 31–47.</mixed-citation></ref></ref-list></back></article>
