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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-2022-13-4-0663</article-id><article-id custom-type="elpub" pub-id-type="custom">gtcrust-1558</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>ПРИРОДА УЛЬТРАБАЗИТОВЫХ КСЕНОЛИТОВ В БАЗАЛЬТАХ ОСТРОВА ЛАНСАРОТЕ (КАНАРСКИЙ АРХИПЕЛАГ)</article-title><trans-title-group xml:lang="en"><trans-title>THE NATURE OF ULTRAMAFIC XENOLITHS IN THE BASALTS OF LANZAROTE ISLAND (CANARY ARCHIPELAGO)</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>Крылова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>634050, Томск, пр-т Ленина, 36</p></bio><bio xml:lang="en"><p>36 Lenin Ave, Tomsk 634050</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>Гертнер</surname><given-names>И. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Gertner</surname><given-names>I. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>634050, Томск, пр-т Ленина, 36</p></bio><bio xml:lang="en"><p>36 Lenin Ave, Tomsk 634050</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>Гутьеррес-Алонсо</surname><given-names>Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Gutiérrez-Alonso</surname><given-names>G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>634050, Томск, пр-т Ленина, 36</p><p>37008, Саламанка, Испания</p></bio><bio xml:lang="en"><p>36 Lenin Ave, Tomsk 634050</p><p>Salamanca 37008, Spain</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Томский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Tomsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Томский государственный университет; Саламанкский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Tomsk State University; University of Salamanca</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>12</day><month>10</month><year>2022</year></pub-date><volume>13</volume><issue>4</issue><fpage>663</fpage><lpage>663</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Крылова В.А., Гертнер И.Ф., Гутьеррес-Алонсо Г., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Крылова В.А., Гертнер И.Ф., Гутьеррес-Алонсо Г.</copyright-holder><copyright-holder xml:lang="en">Krylova V.A., Gertner I.F., Gutiérrez-Alonso 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/1558">https://www.gt-crust.ru/jour/article/view/1558</self-uri><abstract><p>Проведено минералого-геохимическое изучение перидотитового ксенолита из миндалекаменных базальтов острова Лансароте (Канарский архипелаг), модальный состав которого отвечает гарцбургиту. Одной из особенностей петрографического состава пород является присутствие небольшого количества (≤2 об. %) плагиоклаза. По результатам Sm-Nd изотопных исследований минералов и валового состава породы была получена изохрона, отвечающая возрасту 267±35 млн лет, который может соответствовать начальному этапу раскрытия одного из фрагментов Атлантического океана. Высказано предположение, что образование перидотитов происходило в магматической камере, которая была сформирована в результате «андерплэйтинга», за счет взаимодействия мантийного субстрата c материалом нижней коры.</p></abstract><trans-abstract xml:lang="en"><p>Mineralogical and geochemical study was performed on peridotite xenolith hosted by amygdaline basalts of Lanzarote Island (Canary archipelago). Their modal composition corresponds to harzburgite. Remarkably, the petrographic composition of the rocks is marked by presence of plagioclase. The isochron shows the age of 267±35 Ma, which might be the initial stage of opening a fragment of the Atlantic Ocean. The peridotites were apparently derived in the magmatic chamber formed by "underplating" triggered by interaction of mantle substrate with the lower crust material.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ксенолиты</kwd><kwd>ультрабазиты</kwd><kwd>изотопный состав минералов</kwd><kwd>геохимия породообразующих минералов</kwd><kwd>геохронологический возраст</kwd><kwd>Канарский архипелаг</kwd></kwd-group><kwd-group xml:lang="en"><kwd>xenoliths</kwd><kwd>ultrabasic rocks</kwd><kwd>isotopic composition of minerals</kwd><kwd>geochronological age</kwd><kwd>geochemistry of rock-forming minerals</kwd><kwd>Canary archipelago</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования выполнены при поддержке Программы развития Томского государственного университета (Приоритет-2030, ИГ.49.2022), а также при поддержке Минобрнауки РФ в рамках выполнения государственного задания (проект № 0721-2020-0041). В работе задействовалось оборудование ЦКП «Аналитический центр геохимии природных систем» (соглашение № 075-15-2021-693).</funding-statement><funding-statement xml:lang="en">This research was supported by the Development Program of Tomsk State University (Priority-2030, IG.49.2022) and the Ministry of Science and Higher Education of the Russian Federation as part of the implementation of the state assignment (Project 0721-2020-0041). This work involved equipment of the Shared Research Facilities "Analytical Center of Natural Systems Geochemistry" (Assignment 075-15-2021-693).</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">De Ignacio C., Munoz M., Sagredo J., Fernandez-Santin S., Johansson A., 2006. Isotope Geochemistry and FOZO Mantle Component of the Alkaline-Carbonatitic Association of Fuerteventure, Canary Island, Spain. 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