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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 custom-type="edn" pub-id-type="custom">FPRHQS</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16799</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16799</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">Lithological characteristics of lacustrine sediments in lakes Bolshoye Miassovo and Maloye Miassovo (Southern Urals, Russia)</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Литологические особенности осадков озер Большое Миассово и Малое Миассово (Южный Урал, Россия)</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Yusupova</surname>
            <given-names>Anastasiya R.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Юсупова</surname>
              <given-names>А. Р.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Yusupova</surname>
              <given-names>Anastasiya R.</given-names>
            </name>
          </name-alternatives>
          <email>i@ajusupova.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-8732-3053</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Казанский федеральный университет (Казань, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Kazan Federal University (Kazan, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Nourgalieva</surname>
            <given-names>Nouria G.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Нургалиева</surname>
              <given-names>Н. Г.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Nourgalieva</surname>
              <given-names>Nouria G.</given-names>
            </name>
          </name-alternatives>
          <email>nurgal07@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-4372-9777</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Казанский федеральный университет (Казань, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Kazan Federal University (Kazan, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2026-07-01">
        <day>01</day>
        <month>07</month>
        <year>2026</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2026</year>
      </pub-date>
      <volume>280</volume>
      <fpage>47</fpage>
      <lpage>69</lpage>
      <history>
        <date date-type="received" iso-8601-date="2025-08-14">
          <day>14</day>
          <month>08</month>
          <year>2025</year>
        </date>
        <date date-type="accepted" iso-8601-date="2025-12-24">
          <day>24</day>
          <month>12</month>
          <year>2025</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2026-06-30">
          <day>30</day>
          <month>06</month>
          <year>2026</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2026 А. Р. Юсупова, Н. Г. Нургалиева</copyright-statement>
        <copyright-statement xml:lang="en">© 2026 Anastasiya R. Yusupova, Nouria G. Nourgalieva</copyright-statement>
        <copyright-year>2026</copyright-year>
        <copyright-holder xml:lang="ru">А. Р. Юсупова, Н. Г. Нургалиева</copyright-holder>
        <copyright-holder xml:lang="en">Anastasiya R. Yusupova, Nouria G. Nourgalieva</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/16799">https://pmi.spmi.ru/pmi/article/view/16799</self-uri>
      <abstract xml:lang="ru">
        <p>Климат – один из основных факторов, определяющих осадконакопление в озерных экосистемах. Комплексные исследования непрерывных кернов осадков озер, включающие радиоуглеродное датирование, определение гранулометрического, минерального и химического составов, а также изучение магнитных свойств позволяют реконструировать условия осадконакопления в позднечетвертичное время. Проведение подобных исследований актуально для озер Южного Урала, приуроченных к климаторазделу и характеризующихся разночтением в интерпретации эпизодов увеличения/уменьшения влажности климата на изучаемой территории. В настоящей работе представлены данные по возрасту, вещественному составу и генетическим особенностям донных отложений озер Большое Миассово и Малое Миассово. Установлено, что рассматриваемые озерные осадки по данным гранулометрии, минерального состава и неорганической геохимии демонстрируют общую для пресноводных озер закономерность преобладания литогенных частиц алевритовой размерности, что подтверждается структурой фактора терригенного сноса F1 по данным факторного анализа. Основным источником аллотигенного материала для исследуемых водоемов выступают четвертичные отложения, представленные фациями элювия, делювия, десерпция, аллювия. Показатель ICV, диаграмма A-CN-K позволили выявить, что осадки изучаемых озер формировались за счет вещества аллотигенных стабильных минералов первичного цикла седиментации преимущественно из четвертичных отложений и обнаженных дочетвертичных горных пород. Пути транспортировки аллотигенного материала связаны с направлениями склоновых потоков и русловых каналов, заметных на карте четвертичных отложений. Результаты комплексного анализа позволили выявить наиболее информативные показатели, сопоставленные с глобальными и региональными климатическими стадиями и событиями: потепление Бёллинга (~14700 к.л.н.), похолодание ~8200 к.л.н., аридизация на Южном Урале (~2000 к.л.н.), событие Бонда 1 (~1500 к.л.н.). Выделены события аридизации климата: ~11430, ~6100, ~4250, ~3537, ~1065 к.л.н.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Climate is one of the key factors controlling sediment accumulation in lacustrine ecosystems. Integrated studies of continuous lake-sediment cores, including radiocarbon dating, grain-size analysis, mineralogical and chemical characterization, and measurements of magnetic properties, enable reconstructions of sedimentation conditions during the Late Quaternary. Such studies are particularly relevant for lakes of the Southern Urals, which are located near a climatic divide and for which episodes of increasing/decreasing moisture have been interpreted inconsistently. This paper presents data on the age, material composition, and genetic features of bottom sediments from lakes Bolshoye Miassovo and Maloye Miassovo. The results show that, based on grain-size distribution, mineral composition, and inorganic geochemistry, the studied lacustrine sediments exhibit a pattern typical of freshwater lakes – the predominance of allothigenic silt-sized particles. This is supported by the structure of allothigenic-input factor F1 derived from factor analysis. Quaternary deposits represented by eluvial, slopewash, colluvial, and alluvial facies were identified as the main source of allothigenic material for the investigated basins. The ICV index and the A-CN-K diagram indicate that the sediments formed predominantly from stable allothigenic minerals of the primary sedimentation cycle, sourced mainly from Quaternary deposits and exposed pre-Quaternary rocks. The transport pathways of allothigenic material are linked to the directions of slope flows and channel networks visible on the Quaternary-deposit map. The integrated analysis allowed us to identify the most informative proxies and to correlate them with global and regional climatic stages and events, including the Bølling warming (~14,700 cal. yr BP), the ~8200 cal. yr BP cooling event, aridization in the Southern Urals (~2000 cal. yr BP), and Bond Event 1 (~1500 cal. yr BP). Additional climate-arid events were identified at ~11,430, ~6100, ~4250, ~3537, and ~1065 cal. yr BP.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>осадки современных озер</kwd>
        <kwd>радиоуглеродное датирование</kwd>
        <kwd>гранулометрия</kwd>
        <kwd>геохимия</kwd>
        <kwd>минеральный состав</kwd>
        <kwd>факторный анализ</kwd>
        <kwd>палеоклимат</kwd>
        <kwd>голоцен</kwd>
        <kwd>поздний плейстоцен</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>modern lake sediments</kwd>
        <kwd>radiocarbon dating</kwd>
        <kwd>grain-size analysis</kwd>
        <kwd>geochemistry</kwd>
        <kwd>mineral composition</kwd>
        <kwd>factor analysis</kwd>
        <kwd>paleoclimate</kwd>
        <kwd>Holocene</kwd>
        <kwd>Late Pleistocene</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Работа выполнена за счет субсидии, выделенной Казанскому федеральному университету для выполнения Государственного задания в сфере научной деятельности (проект № FZSM-2023-0023).</funding-statement>
        <funding-statement xml:lang="en">This work was funded by the subsidy allocated to Kazan Federal University for the State assignment in the sphere of scientific activities (project N FZSM-2023-0023).</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
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