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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2020-20-5-690-705</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1341</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Петрогеохимические особенности и U-Pb возраст морион-гранитов Центрального Забайкалья: типизация пород и вопросы их генезиса</article-title><trans-title-group xml:lang="en"><trans-title>Petrogeochemical characteristics and U-Pb age of morion-granite rocks in Central Transbaikalia: Classification and genesis problems</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елбаев</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Elbaev</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>670047, г. Улан-Удэ, ул. Сахьяновой, 6а</p></bio><bio xml:lang="en"><p>Aleksei L. Elbaev</p><p>6a Sakh’yanova st., 670047 Ulan-Ude</p></bio><email xlink:type="simple">elbaev@ginst.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордиенко</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordienko</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>670047, г. Улан-Удэ, ул. Сахьяновой, 6а</p></bio><bio xml:lang="en"><p>Ivan V. Gordienko</p><p>6a Sakh’yanova st., 670047 Ulan-Ude</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хубанов</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khubanov</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>670047, г. Улан-Удэ, ул. Сахьяновой, 6а</p></bio><bio xml:lang="en"><p>Valentin B. Khubanov</p><p>6a Sakh’yanova st., 670047 Ulan-Ude</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зарубина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zarubina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033, г. Иркутск, ул. Фаворского, 1а </p></bio><bio xml:lang="en"><p>Ol’ga V. Zarubina</p><p>1a Favorsky st., 664033 Irkutsk</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Геологический институт СО РАН<country>Россия</country></aff><aff xml:lang="en">Geological Institute SB RAS<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт геохимии СО РАН<country>Россия</country></aff><aff xml:lang="en">A.P. Vinogradov Institute of Geochemistry SB RAS<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2020</year></pub-date><volume>20</volume><issue>5</issue><fpage>690</fpage><lpage>705</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Елбаев А.Л., Гордиенко И.В., Хубанов В.Б., Зарубина О.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Елбаев А.Л., Гордиенко И.В., Хубанов В.Б., Зарубина О.В.</copyright-holder><copyright-holder xml:lang="en">Elbaev A.L., Gordienko I.V., Khubanov V.B., Zarubina O.V.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.lithosphere.ru/jour/article/view/1341">https://www.lithosphere.ru/jour/article/view/1341</self-uri><abstract><sec><title>Объект исследований</title><p>Объект исследований. Приведены первые данные о возрасте, особенностях вещественного состава морионсодержащих гранитоидов Хамнигадайского и Этытейского массивов Центрального Забайкалья. Задачи исследования заключались в установлении времени и особенностей формирования специфических пород, геохимической типизации в связи с их потенциальной рудоносностью и выявлении факторов, ответственных за происхождение черного дымчатого кварца.</p></sec><sec><title>Методы</title><p>Методы. Петрогенные, редкие и редкоземельные элементы определены методами классического силикатного анализа, рентгено-флуоресцентным и масс-спектрометрическим с индуктивно-связанной плазмой. U-Pb возраст цирконов получен методами SHRIMP-II (ВСЕГЕИ, г. Санкт-Петербург) и LA- ICP- MS (ГИН СО РАН, г. Улан-Удэ). Состав минералов изучался на электронном микроскопе LEO-1430 с энергодисперсионным спектрометром Inca Energy-300.</p></sec><sec><title>Результаты и выводы</title><p>Результаты и выводы. Массивы, сложенные морионсодержащими гранитами, имеют раннеюрский (190–185 млн лет) возраст и входят в состав периферической части раннемезозойской Хэнтэй-Даурской магматической области. По петрохимическим и минералогическим характеристикам морион-граниты отличаются от типичных внутриплитных гранитоидов и соответствуют A-гранитам “окисленного” типа. Такая вещественная особенность морионовых гранитоидов связана с присутствием двух оксидных минералов – магнетита и марганецсодержащего ильменита. Черная дымчатая окраска кварца обусловлена относительно высокой радиоактивностью лейкогранитов, вызванной наличием акцессорных ториевых и урансодержащих минералов, а “молодой” возраст пород способствовал сохранению окраски.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Research subject</title><p>Research subject. This article presents data on the age, material composition, petrogenetical and geochemical properties of morion-containing granites in the Etytei and Khamnigadai massifs of Central Transbaikalia.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The composition of rock samples was investigated using the methods of chemical analysis, XRD and ICP-MS; the age was determined by the zircon U–Pb method using SHRIMP and LA-ICP-MS; the mineral composition was studied using an LEO-1430 electron microscope.</p></sec><sec><title>Results</title><p>Results. The massifs composed of morion-containing granites belong to Early Jurassic (190–185 Ma) and form the peripheral area of the Early Mesozoic Khentei-Dauria magmatic region.</p></sec><sec><title>Conclusion</title><p>Conclusion. According to their petrochemical and mineralogical characteristics, the morion-containing granites under study differ from typical intra-plate granitoids and correspond to the “oxidized” A-type granites. The black smoky colour of quartz contained in granite samples is associated with a relatively high radioactivity of rocks caused by the presence of accessory thorium and uranium-containing minerals.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>морион-граниты</kwd><kwd>лейкограниты</kwd><kwd>геохимия</kwd><kwd>геохронология</kwd><kwd>Центральное Забайкалье</kwd></kwd-group><kwd-group xml:lang="en"><kwd>morion-granites</kwd><kwd>leucogranites</kwd><kwd>geochemistry</kwd><kwd>geochronology</kwd><kwd>Central Transbaikalia</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследования выполнены при поддержке программы Президиума РАН № 1.4П и грантов РФФИ № 17-05-00275, 19-05-00312</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The studies were supported by the Presidium of the Russian Academy of Sciences No. 1.4P program and RFBR grants No. 17-05-00275, 19-05-00312</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Балакирев В.Г., Киевленко Е.Я., Никольская Л.В., Самойлович М.И., Хаджи В.Е., Цинобер Л.И. 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