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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">gtcrust</journal-id><journal-title-group><journal-title xml:lang="ru">Геодинамика и тектонофизика</journal-title><trans-title-group xml:lang="en"><trans-title>Geodynamics &amp; Tectonophysics</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2078-502X</issn><publisher><publisher-name>Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.5800/GT-2022-13-2s-0597</article-id><article-id custom-type="elpub" pub-id-type="custom">gtcrust-1441</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>ПАЛЕОГЕОДИНАМИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PALEOGEODYNAMICS</subject></subj-group></article-categories><title-group><article-title>ВОЗРАСТ КИНТЕРЕПСКОЙ СВИТЫ СЕВЕРО-ЗАПАДНОГО САЛАИРА: ДАННЫЕ ХЕМОСТРАТИГРАФИИ И U-Pb ДАТИРОВАНИЯ ЦИРКОНА</article-title><trans-title-group xml:lang="en"><trans-title>AGE OF THE KINTEREP FORMATION OF THE NORTHWESTERN SALAIR: CHEMOSTRATIGRAPHY AND U-Pb ZIRCON DATING</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>Ветрова</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Vetrova</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630090, Новосибирск, пр-т Академика Коптюга, 3</p></bio><bio xml:lang="en"><p>3 Academician Koptyug Ave, Novosibirsk 630090</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>Ветров</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vetrov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630090, Новосибирск, пр-т Академика Коптюга, 3</p></bio><bio xml:lang="en"><p>3 Academician Koptyug Ave, Novosibirsk 630090</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>Летникова</surname><given-names>Е. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Letnikova</surname><given-names>E. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630090, Новосибирск, пр-т Академика Коптюга, 3</p></bio><bio xml:lang="en"><p>3 Academician Koptyug Ave, Novosibirsk 630090</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>Солошенко</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Soloshenko</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, Екатеринбург, ул. Академика Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Academician Vonsovsky St, Ekaterinburg 620016</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 минералогии им. В.С. Соболева СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт геологии и геохимии им. А.Н. Заварицкого УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Zavaritsky Institute of Geology and Geochemistry, Ural Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2022</year></pub-date><volume>13</volume><issue>2</issue><fpage>597</fpage><lpage>597</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ветрова Н.И., Ветров Е.В., Летникова Е.Ф., Солошенко Н.Г., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ветрова Н.И., Ветров Е.В., Летникова Е.Ф., Солошенко Н.Г.</copyright-holder><copyright-holder xml:lang="en">Vetrova N.I., Vetrov E.V., Letnikova E.F., Soloshenko N.G.</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.gt-crust.ru/jour/article/view/1441">https://www.gt-crust.ru/jour/article/view/1441</self-uri><abstract><p>Проведено комплексное изучение стратотипического разреза кинтерепской свиты Северо-Западного Салаира, включающее геохимические, изотопно-геохимические (Sr, С, О) исследования карбонатных пород и U-Pb датирование (LA-ICP-MS) магматогенных кристаллов циркона из туффитов. Изученные карбонатные породы представлены чистыми известняками с величиной Mg/Са менее 0.007 и низкой долей нерастворимого остатка (в среднем 5 %). Кинтерепские известняки характеризуются значениями δ18OSMOW от 19.8 до 23.8 ‰ и δ13СPDB от –0.7 до +0.9. Изотопный состав Sr в известняках кинтерепской свиты варьируется в узком диапазоне значений 87Sr/86Sr между 0.70851 и 0.70859. Сопоставление полученных изотопных характеристик (87Sr/86Sr и δ13СPDB) известняков кинтерепской свиты с обобщенной мировой кривой вариации 87Sr/86Sr и значений δ13СPDB в палеоокеане предполагает два равновероятных варианта интерпретации времени накопления известняков кинтерепской свиты: 550–540 и 525–510 млн лет. U-Pb датирование кристаллов магматогенного циркона из туффита, слагающего прослой среди известняков кинтерепской свиты, показало возраст формирования на рубеже ~515 млн лет. Таким образом, с помощью комбинации методов изотопной (Sr, С) хемостратиграфии карбонатных пород и U-Pb датирования кристаллов магматогенного циркона из сингенетичных известнякам туффитов установлены ограничения на время формирования кинтерепской свиты Салаирского бассейна 525–510 млн лет. Карбонатные породы, имеющие схожий возраст и аналогичные особенности изотопного состава, известны в соседних районах (например, Кузнецкий Алатау) и в пространственно отдаленных от Салаирского бассейна регионах Сибирской платформы и микроконтинентов Центральной Азии (Тувино-Монгольского и Дзабханского).</p></abstract><trans-abstract xml:lang="en"><p>A comprehensive study of the stratotype section of the Kinterep formation of the North-Western Salair was carried out, including geochemical and isotope (Sr, C, O) studies of carbonate rocks, and U-Pb dating (LA-ICP-MS) of igneous zircon crystals from tuffites. The studied carbonate rocks are pure limestones with Mg/Ca less than 0.007 and a low proportion of insoluble residue (average 5 %). Kinterep limestones are characterized by δ18OSMOW values from 19.8 to 23.8 ‰ and δ13СPDB values from –0.7 to +0.9. The Sr isotope composition in limestones of the Kinterep formation varies in a narrow range of 87Sr/86Sr values between 0.70851 and 0.70859. Comparison of the obtained isotopic characteristics (87Sr/86Sr and δ13СPDB) of Kinterep formation limestones with the generalized global 87Sr/86Sr variation curve and δ13СPDB values in the pale-ocean suggests two equally probable interpretations of the time of accumulation of Kinterep formation limestones: 550–540 and 525–510 Ma. U-Pb dating of magmatic zircon crystals from tuffite, which forms an interlayer among limestones of the Kinterep formation, showed the age at the boundary of ~515 Ma. Thus, using a combination of isotope (Sr, C) chemostratigraphy of carbonate rocks and U-Pb dating of igneous zircon crystals from tuffites syngenetic to limestones, the age limit of 525–510 Ma was established for the time of the formation of the Kinterep formation of the Salair basin. Carbonate rocks of similar age and similar features of the isotopic composition are known in neighbouring areas (for example, the Kuznetsk Alatau) and in regions of the Siberian Platform and microcontinents of Central Asia (Tuva-Mongolian and Dzabkhan) spatially distant from the Salair basin.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>U-Pb датирование</kwd><kwd>циркон</kwd><kwd>хемостратиграфия</kwd><kwd>изотопия (Sr</kwd><kwd>C</kwd><kwd>О)</kwd><kwd>кембрий</kwd><kwd>Центрально-Азиатский складчатый пояс</kwd><kwd>Салаир</kwd></kwd-group><kwd-group xml:lang="en"><kwd>U-Pb dating</kwd><kwd>zircon</kwd><kwd>chemostratigraphy</kwd><kwd>isotopy (Sr</kwd><kwd>C</kwd><kwd>О)</kwd><kwd>Cambrian</kwd><kwd>Central Asian foldbelt</kwd><kwd>Salair</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 21-77-00022 (геохимические, геохронологические и изотопные Sr-исследования) и в рамках государственного задания ИГМ СО РАН (изотопные С-O исследования)</funding-statement><funding-statement xml:lang="en">The research was financially supported by Russian Science Faundation project 21-77-00022 (geochemical, geochronological and Sr-isotope analysis), as a part of the state assignment of the IGM SB RAS (С-O isotope study)</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">Бабин Г.А., Шокальский С.П. 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