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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">geomorf</journal-id><journal-title-group><journal-title xml:lang="ru">Геоморфология и палеогеография</journal-title><trans-title-group xml:lang="en"><trans-title>Geomorfologiya i Paleogeografiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-1789</issn><issn pub-type="epub">2949-1797</issn><publisher><publisher-name></publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31857/S2949179725040058</article-id><article-id custom-type="elpub" pub-id-type="custom">geomorf-3704</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>Озера европейской части России</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Lakes of European Russia</subject></subj-group></article-categories><title-group><article-title>Эволюция условий осадконакопления в палеозаливе Ладожского озера (по данным лито-, био- и хроностратиграфического изучения донных отложений озера Лавиярви в Северном Приладожье)</article-title><trans-title-group xml:lang="en"><trans-title>Evolution of sedimentation environments in the palaeo-bay of Lake Ladoga (as inferred from litho-, bio- and chronostratigraphic studies of the sediments of Lake Lavijarvi, northern coast of Lake Ladoga)</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>Кузнецов</surname><given-names>Д. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsov</surname><given-names>D. D.</given-names></name></name-alternatives><email xlink:type="simple">dd_kuznetsov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лудикова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ludikova</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">ellerbeckia@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Субетто</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Subetto</surname><given-names>D. A.</given-names></name></name-alternatives><email xlink:type="simple">subetto@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ревунова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Revunova</surname><given-names>A. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Потахин</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Potakhin</surname><given-names>M. S.</given-names></name></name-alternatives><email xlink:type="simple">mpotakhin@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белкина</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belkina</surname><given-names>N. A.</given-names></name></name-alternatives><email xlink:type="simple">bel110863@mail.ru</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт озероведения – CПб ФИЦ РАН, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Limnology – SPC RAS, Saint-Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Российский государственный педагогический университет имени А. И. Герцена, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Herzen State Pedagogical University, Saint-Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Карельский научный центр РАН, Петрозаводск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Komarov Botanical Institut of the RAS, Saint-Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Карельский научный центр РАН, Петрозаводск;&#13;
Российский государственный педагогический университет имени А. И. Герцена, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Herzen State Pedagogical University, Saint-Petersburg;&#13;
Karelian Research Center of the RAS, Petrozavodsk</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Российский государственный педагогический университет имени А. И. Герцена, Санкт-Петербург;&#13;
Ботанический институт имени В. Л. Комарова РАН, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Herzen State Pedagogical University, Saint-Petersburg;&#13;
Karelian Research Center of the RAS, Petrozavodsk</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>28</day><month>03</month><year>2026</year></pub-date><volume>56</volume><issue>4</issue><fpage>626</fpage><lpage>641</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кузнецов Д.Д., Лудикова А.В., Субетто Д.А., Ревунова А.В., Потахин М.С., Белкина Н.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Кузнецов Д.Д., Лудикова А.В., Субетто Д.А., Ревунова А.В., Потахин М.С., Белкина Н.А.</copyright-holder><copyright-holder xml:lang="en">Kuznetsov D.D., Ludikova A.V., Subetto D.A., Revunova A.V., Potakhin M.S., Belkina N.A.</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://geomorphology.igras.ru/jour/article/view/3704">https://geomorphology.igras.ru/jour/article/view/3704</self-uri><abstract><p>Приводятся результаты изучения содержания органического вещества, гранулометрического состава, диатомового анализа и радиоуглеродного датирования донных отложений озера Лавиярви (северное Приладожье), в прошлом являвшегося заливом Ладожского озера. Полученные данные позволили выделить основные этапы развития водоема, отложения которых характеризуются различным содержанием органического вещества, соотношением пелитовой и алевритовой фракций, составом диатомовых комплексов и концентрациями кремнистых микрофоссилий и сопоставить их со стадиями развития Ладожского озера. Наиболее дискуссионными представляются время и обстановки формирования наиболее древних отложений в котловине озера Лавиярви, которые, по совокупности полученных результатов, можно отнести как к концу позднеледниковья, так и к раннему голоцену. На ранних стадиях развития (до ~9200 кал. л. н.) условия в котловине озера Лавиярви были схожи с обстановками в Ладожском озере. В дальнейшем (~9200–3900 кал. л. н.) локальные факторы стали более выраженными, и в озере Лавиярви установились условия, отличные от таковых в открытой части Ладожского озера. Преобладание бентосных диатомей указывает на широкое распространение мелководных участков в ладожском палеозаливе. О специфичности условий этого этапа свидетельствует также высокое относительное содержание цист золотистых водорослей, нехарактерное для отложений второй половины голоцена в котловине Ладожского озера. Изоляция озера Лавиярви в результате завершения среднеголоценовой ладожской трансгрессии, образования р. Невы и падения уровня Ладожского озера до современных отметок имела место после 3900 кал. л. н. Стадия изолированного озера характеризуется низким содержанием органического вещества, нетипичным для голоценовых отложений малых озер региона, и резкими перестройками состава диатомовых комплексов.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of studying the organic matter content, granulometric composition, diatom analysis and radiocarbon dating of bottom sediments of Lake Lavijarvi (northern Priladozhye), which was formerly a bay of Lake Ladoga. The data obtained made it possible to identify the main stages of the reservoir development, the sediments of which are characterized by different organic matter content, the ratio of clay and silt fractions, the composition of diatom complexes and the concentrations of siliceous microfossils, and to compare them with the main stages of Lake Ladoga development. The most controversial are the time and environments of formation of the most ancient sediments in the basin of Lake Lavijarvi, which, based on the totality of the results obtained, can be attributed to both the end of the Late Glacial and the Early Holocene. At the early stages of development (up to ~9200 cal. BP), the conditions in the basin of Lake Lavijarvi were similar to those in Lake Ladoga. Later (~9200–3900 cal BP), local factors became more pronounced and conditions in Lake Lavijärvi differed from those in the open part of Lake Ladoga. The predominance of benthic diatoms indicates a wide distribution of shallow-water areas in the Ladoga paleobay. The specificity of the conditions of this stage is also evidenced by the high relative content of golden algae cysts, which is not typical for deposits of the second half of the Holocene in the Lake Ladoga basin. The isolation of Lake Lavijärvi as a result of the completion of the Middle Holocene Ladoga transgression, the formation of the Neva River, and the drop in the level of Lake Ladoga to modern marks occurred after 3900 cal BP. The isolated lake stage is characterized by a low content of organic matter, which is not typical for Holocene deposits of small lakes in the region, and by abrupt changes in the composition of diatom assemblages.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>донные отложения</kwd><kwd>малое озеро</kwd><kwd>Приладожье</kwd><kwd>позднеледниковье</kwd><kwd>голоцен</kwd><kwd>потери при прокаливании</kwd><kwd>органонакопление</kwd><kwd>прорыв р. Невы</kwd><kwd>диатомовый анализ</kwd><kwd>цисты хризофитов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lake sediments</kwd><kwd>Lake Ladoga</kwd><kwd>the Holocene</kwd><kwd>loss on ignition</kwd><kwd>organic sedimentation</kwd><kwd>Neva breaktrough</kwd><kwd>diatom analysis</kwd><kwd>small lake</kwd><kwd>Priladozhye</kwd><kwd>late glacial</kwd><kwd>Neva breakthrough</kwd><kwd>chrysophyte cysts</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования выполнены в рамках госзадания ИНОЗ РАН – СПб ФИЦ РАН по теме FFZF-2024- 0001 (Д. Д. Кузнецов, А. В. Лудикова) и при поддержке проекта РНФ № 24-17-00206 (Д. А. Субетто, Н. А. Белкина, М. С. Потахин).</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">Абрамова С.А., Давыдова Н.Н., Квасов Д.Д. (1967) История Ладожского озера в голоцене по данным спорово-пыльцевого и диатомового анализов. 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