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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.31897/PMI.2022.48</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15803</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15803</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Magma feeding paleochannel in the Monchegorsk ore region: geochemistry, isotope U-Pb and Sm-Nd analysis (Kola region, Russia)</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Магмаподводящий палеоканал в Мончегорском рудном районе:  геохимия, изотопный U-Pb и Sm-Nd анализ (Кольский регион, Россия)</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Smolkin</surname>
            <given-names>Valeriy F.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Смолькин</surname>
              <given-names>В. Ф.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Smolkin</surname>
              <given-names>Valeriy F.</given-names>
            </name>
          </name-alternatives>
          <email>vfsmolkin@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-1400-6310</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Государственный геологический музей им. В.И.Вернадского Российской академии наук (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Vernadsky State Geological Museum, Russian Academy of Sciences (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Mokrushin</surname>
            <given-names>Artem V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Мокрушин</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Mokrushin</surname>
              <given-names>Artem V.</given-names>
            </name>
          </name-alternatives>
          <email>mokrushin@geoksc.apatity.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-1400-6310</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Геологический институт Кольского научного центра Российской академии наук (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute of the Kola Science Centre, Russian Academy of Sciences (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Bayanova</surname>
            <given-names>Tamara B.</given-names>
          </name>
          <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>Tamara B.</given-names>
            </name>
          </name-alternatives>
          <email>tamara@geoksc.apatity.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-7281-8707</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Геологический институт Кольского научного центра Российской академии наук (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute of the Kola Science Centre, Russian Academy of Sciences (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Serov</surname>
            <given-names>Pavel A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Серов</surname>
              <given-names>П. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Serov</surname>
              <given-names>Pavel A.</given-names>
            </name>
          </name-alternatives>
          <email>serov@geoksc.apatity.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-0930-0301</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Геологический институт Кольского научного центра Российской академии наук (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute of the Kola Science Centre, Russian Academy of Sciences (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Ariskin</surname>
            <given-names>Aleksei A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Арискин</surname>
              <given-names>А. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Ariskin</surname>
              <given-names>Aleksei A.</given-names>
            </name>
          </name-alternatives>
          <email>ariskin@rambler.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-5081-2731</contrib-id>
          <xref ref-type="aff" rid="aff5"/>
        </contrib>
        <aff-alternatives id="aff5">
          <aff>
            <institution xml:lang="ru">Московский государственный университет им. М.В.Ломоносова (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Lomonosov Moscow State University (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2022-07-26">
        <day>26</day>
        <month>07</month>
        <year>2022</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2022</year>
      </pub-date>
      <volume>255</volume>
      <fpage>405</fpage>
      <lpage>418</lpage>
      <history>
        <date date-type="received" iso-8601-date="2022-04-11">
          <day>11</day>
          <month>04</month>
          <year>2022</year>
        </date>
        <date date-type="accepted" iso-8601-date="2022-06-15">
          <day>15</day>
          <month>06</month>
          <year>2022</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2022-07-26">
          <day>26</day>
          <month>07</month>
          <year>2022</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2022 В. Ф. Смолькин, А. В. Мокрушин, Т. Б. Баянова, П. А. Серов, А. А. Арискин</copyright-statement>
        <copyright-statement xml:lang="en">© 2022 Valeriy F. Smolkin, Artem V. Mokrushin, Tamara B. Bayanova, Pavel A. Serov, Aleksei A. Ariskin</copyright-statement>
        <copyright-year>2022</copyright-year>
        <copyright-holder xml:lang="ru">В. Ф. Смолькин, А. В. Мокрушин, Т. Б. Баянова, П. А. Серов, А. А. Арискин</copyright-holder>
        <copyright-holder xml:lang="en">Valeriy F. Smolkin, Artem V. Mokrushin, Tamara B. Bayanova, Pavel A. Serov, Aleksei A. Ariskin</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15803">https://pmi.spmi.ru/pmi/article/view/15803</self-uri>
      <abstract xml:lang="ru">
        <p>Выполнено комплексное исследование линзовидно-пластового тела ультраосновного состава мощностью 340 м, вскрытого структурной скв. М-1 на глубине около 2,2 км. Основной его объем сложен плагиогарцбургитом, на эндоконтактах сохранились мелкозернистые породы зон закалок норитового и ортопироксенитового составов. Породы тела близки по своему составу к породам вблизи залегающей рудоносной расслоенной интрузии – Мончеплутона. Возраст внедрения тела ультрабазитов равен 2510 ± 9 млн лет (U-Pb, ID-TIMS, циркон) и сопоставим с учетом аналитических ошибок с периодом формирования Мончеплутона (2507-2498 млн лет). По данным изучения Sm-Nd системы в породе и минералах установлено положительное значение параметра eNd (+1,1), аналогичное для дунитов и хромититов Мончеплутона. На основе полученных результатов вскрытое на глубине тело ультрабазитов отнесено к магмаподводящему палеоканалу, по которому поступала ультраосновная, слабоконтаминированная магма в вышерасположенную магматическую камеру. Данный объект представляет собой уникальный пример магмаподводящей системы для рудоносной расслоенной интрузии докембрийского возраста.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>A comprehensive study of a 340 m thick lenticular-sheet body of ultramafic composition penetrated by structural well M-1 at a depth of about 2.2 km was accomplished. Its main volume is composed of plagioharzburgite; fine-grained rocks of norite and orthopyroxenite chilling zones are preserved on endocontacts. The rocks of the body are similar in composition to the rocks near the underlying ore-bearing layered intrusion – the Monchepluton. The age of intrusion of the ultramafic body is 2510 ± 9 Ma (U-Pb, ID-TIMS, zircon) and, taking into account analytical errors, is comparable with the formation period of the Monchepluton (2507-2498 Ma). According to the study of the Sm-Nd system in rocks and minerals, a positive value of the eNd (+1.1) parameter was established, similar to that in dunites and chromitites of the Monchepluton. Based on these results, the ultramafic body penetrated at depth was assigned to the magma feeding paleochannel through which the ultramafic, weakly contaminated magma entered the overlying magma chamber. This body is a unique example of a magma-feeding system for the ore-bearing layered intrusion of Precambrian age.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>Кольский регион</kwd>
        <kwd>палеопротерозой</kwd>
        <kwd>расслоенные интрузии</kwd>
        <kwd>габбро-анортозиты</kwd>
        <kwd>Мончеплутон</kwd>
        <kwd>Мончетундровский массив</kwd>
        <kwd>геохимический анализ</kwd>
        <kwd>изотопные U-Pb и Sm-Nd системы</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Kola region</kwd>
        <kwd>Paleoproterozoic</kwd>
        <kwd>layered intrusions</kwd>
        <kwd>gabbro-anorthosites</kwd>
        <kwd>Monchepluton</kwd>
        <kwd>Monchetundra massif</kwd>
        <kwd>geochemical analysis</kwd>
        <kwd>isotopic U-Pb and Sm-Nd systems</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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