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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">10.24930/1681-9004-2020-20-2-224-230</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1257</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>Первые результаты изотопного (U-Pb, ID-TIMS) датирования единичных зерен циркона из долеритовых даек Восточной зоны Урала</article-title><trans-title-group xml:lang="en"><trans-title>The first results of isotopic (U-Pb, ID-TIMS) dating of individual zircon grains from dolerite dikes of the Eastern zone of the Urals</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>Смирнов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Vladimir N. Smirnov</p></bio><email xlink:type="simple">smirnov@igg.uran.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>Иванов</surname><given-names>К. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>K. S.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kirill S. Ivanov</p></bio><email xlink:type="simple">ivanovks@igg.uran.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>Баянова</surname><given-names>Т. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Bayanova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Tamara V. Bayanova</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии и геохимии УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.N. Zavaritsky Institute of Geology and Geochemistry, Ural Branch of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Геологический институт КНЦ РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Geological Institute, Kola Science Centre of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>25</day><month>04</month><year>2020</year></pub-date><volume>20</volume><issue>2</issue><fpage>224</fpage><lpage>230</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнов В.Н., Иванов К.С., Баянова Т.Б., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Смирнов В.Н., Иванов К.С., Баянова Т.Б.</copyright-holder><copyright-holder xml:lang="en">Smirnov V.N., Ivanov K.S., Bayanova T.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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/1257">https://www.lithosphere.ru/jour/article/view/1257</self-uri><abstract><p>Объект исследований. В статье изложены результаты датирования двух различающихся по геохимическим особенностям долеритовых даек из разреза по р. Исеть в районе с. Смолинское (Восточная зона Среднего Урала). Методы изучения. Датирование выполнено U-Pb ID-TIMS методом по единичным зернам циркона с использованием искусственного 205Pb/235U трассера в лаборатории геохронологии и изотопной геохимии Геологического института КНЦ РАН. Измерения изотопного состава свинца и концентраций урана и свинца проводились на семиканальном масс-спектрометре Finnigan-MAT (RPQ) в динамическом режиме с использованием умножителя и квадрупольной приставки RPQ в режиме счета ионов. Результаты. Для одной из датированных даек получен возраст 330 ± 3 млн лет, для другой – 240 ± 2 млн лет. Выводы. Результаты исследований свидетельствуют о разновозрастности долеритовых даек, развитых в пределах Восточной зоны Среднего Урала. Более древний из двух установленных возрастных уровней внедрения этих даек соответствует раннекаменноугольной эпохе, что, наряду с близостью долеритов по петрохимическим особенностям базальтоидам раннекаменноугольного бекленищевского вулканического комплекса, позволяет рассматривать их в качестве гипабиссальных комагматов этих вулканитов. Более молодой, триасовый, возрастной уровень свидетельствует о том, что внедрение части долеритовых даек было связано с завершающими фазами формирования траппов, развитых местами в пределах восточной окраины Урала и очень широко далее к востоку в фундаменте (доюрском основании) Западно-Сибирской плиты.</p></abstract><trans-abstract xml:lang="en"><p>Research subject. The article presents the results of dating two dolerite dikes differing in geochemical features from a section along the Iset river in the area of Smolinskoe settlement (the Eastern zone of the Middle Urals). Materials and methods. The dating was performed by an U-Pb ID-TIMS technique for single zircon grains using an artificial 205Pb/235U tracer in the laboratory of geochronology and isotope geochemistry of the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences. The lead isotopic composition and uranium and lead concentrations were measured using a Finnigan-MAT (RPQ) seven-channel mass spectrometer in dynamic mode using a secondary electron multiplier and RPQ quadrupole in ion counting mode. Results. The dikes were dated 330 ± 3 Ma and 240 ± 2 Ma. Conclusions. The research results indicate different ages of dolerite dikes developed within the Eastern zone of the Middle Urals. The oldest of the two established age levels corresponds to the Early Carboniferous era. This fact, along with the proximity of the dolerites to the petrochemical features of the basaltoids of the Early Carboniferous Beklenischevsky volcanic complex, allows these bodies to be considered as hypabyssal comagmates of these volcanics. The youngest obtained age level – Triassic – indicates that the introduction of some dolerite dikes was associated with the final phases of the trapp formation developed rarely within the eastern outskirts of the Urals and widely further east in the foundation (pre-Jurassic basement) of the West-Siberian Plate.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>долериты</kwd><kwd>Восточная зона Среднего Урала</kwd><kwd>ID-TIMS датирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dolerites</kwd><kwd>Eastern zone of the Middle Urals</kwd><kwd>ID-TIMS dating</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья подготовлена в процессе проведения работ по госбюджетной теме ИГГ УрО РАН № АААА-А18-118052590032-6 “Палеогеодинамика и эволюция структурно-вещественных комплексов при формировании земной коры континентального типа (на примере Урало-Монгольского складчатого пояса и ЗападноСибирской платформы)”.</funding-statement><funding-statement xml:lang="en">The article was prepared in the framework of the state budget topic of the IGG UB RAS No. AAAA-A18-118052590032-6 “Paleogeodynamics and evolution of structural-material complexes during the formation of the continental-type crust (by the example of the Ural-Mongolian folded belt and the West Siberian platform)”.</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">Государственная геологическая карта Российской Федерации. 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