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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">10.24930/1681-9004-2020-20-1-76-92</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1240</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>Текстура конус-в-конусе: новые данные</article-title><trans-title-group xml:lang="en"><trans-title>Cone-in-cone structure: New data</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>Шумилов</surname><given-names>И. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Shumilov</surname><given-names>I. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>167982, Сыктывкар, ул. Первомайская, 54</p></bio><bio xml:lang="en"><p>Igor’ Kh. Shumilov</p><p>54 Pervomayskaya st, Syktyvkar 167982</p></bio><email xlink:type="simple">shumilov@geo.komisc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии Коми НЦ, УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.P. Yushkin Institute of Geology, Komi Science Center, Ural Branch 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>29</day><month>02</month><year>2020</year></pub-date><volume>20</volume><issue>1</issue><fpage>76</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шумилов И.Х., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Шумилов И.Х.</copyright-holder><copyright-holder xml:lang="en">Shumilov I.K.</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/1240">https://www.lithosphere.ru/jour/article/view/1240</self-uri><abstract><sec><title>Предмет исследований</title><p>Предмет исследований. В статье приведены результаты изучения кальцитовых линз с текстурой конус-в-конусе из терригенных глинистых отложений среднего девона на Среднем Тимане.</p></sec><sec><title>Методы</title><p>Методы. Изучение петрографических шлифов проводилось с помощью поляризационного микроскопа Nikon eclipse LV100 ND c фотокамерой Nikon DS Fi2, аншлифов полированных и протравленных HCl - на сканирующем электронном микроскопе JSM-6400 Jeol с энергодисперсионным спектрометром ISIS Link и волновым спектрометром Microspec. Разложение карбонатов и измерение изотопного состава углерода в режиме непрерывного потока гелия производились на аналитическом комплексе ThermoFisher Scientific.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что кальцитовые тела сложены мозаичными блок-кристаллами и имеют структуру кристаллической щетки. Кальцит отличается аномально низкими значениями δ13Скарб - до -23.5 %о. Детально изучены глинистые пленки и включения слойков аргиллита. Установлен механизм образования пилообразной верхней границы слойков - локальное замещение алюмосиликатов кальцитом с сохранением реликтовой слоистой текстуры.</p></sec><sec><title>Выводы</title><p>Выводы. Предложен новый частный вариант кристаллизационной модели генезиса карбонатных тел со структурой конус-в-конусе.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Research subject</title><p>Research subject. The article presents the results of investigating calcite lenses with a cone-in-cone structure from Middle Devonian clay terrigenous deposits in the Middle Timan.</p></sec><sec><title>Methods</title><p>Methods. The investigation of petrographic thin-sections was carried out using a polarizing microscope Nikon eclipse LV100 ND equipped with a Nikon DS Fi2 camera. Polished sections etched with HCl were examined using a scanning electronic microscope JSM-6400 Jeol with a power dispersive spectrometer ISIS Link and a wave spectrometer Microspec. The decomposition of carbonates and the measurement of isotope carbon composition in the mode of continuous helium stream were carried out using a ThermoFisher Scientific analytical complex.</p></sec><sec><title>Results</title><p>Results. It is established that the investigated calcite bodies consists of mosaic block crystals having a drusy structure. Calcite is characterized by abnormally low values S13Ccarb - up to -23.5 %o. Clay films and soapstone inclusions were studied in detail. The formation mechanism of the saw-tooth profile of the upper bound of these inclusions was determined, which consists in the local substitution of alumosilicates with calcite under the maintenance of their relic layered texture.</p></sec><sec><title>Conclusions</title><p>Conclusions. A new version of the crystallization model of carbonate body genesis with a cone-in-cone structure is proposed.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>текстура конус-в-конусе</kwd><kwd>кристаллизационная модель</kwd><kwd>девон</kwd><kwd>Средний Тиман</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cone-in-cone structure</kwd><kwd>crystallizational model</kwd><kwd>Devonian</kwd><kwd>Middle Timan Acknowledgements</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке РФФИ, грант 20-05-00445А</funding-statement><funding-statement xml:lang="en">The work was supported by the RFBR, grant 20-05-00445A</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">Атлас конкреций. 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