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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/S0435428121010041</article-id><article-id custom-type="elpub" pub-id-type="custom">geomorf-1526</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>Научные сообщения</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Short communications</subject></subj-group></article-categories><title-group><article-title>Разновозрастные древние аласы на северо-востоке России</article-title><trans-title-group xml:lang="en"><trans-title>Different-age ancient alases of the North-East of Russia</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>Горбатов</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbatov</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">e.s.gor@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>Колесников</surname><given-names>С. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolesnikov</surname><given-names>S. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузьмина</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzmina</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики Земли им. О.Ю. Шмидта РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Schmidt Institute of Physics of the Earth of the RAS (IPE RAS)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет геодезии и картографии (МИИГАиК)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Geodesy and Cartography (MIIGAiK)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Палеонтологический институт им. А.А. Борисяка РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Borissiak Paleontological Institute of the RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>04</month><year>2021</year></pub-date><volume>52</volume><issue>1</issue><issue-title>Геоморфология</issue-title><fpage>33</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Горбатов Е.С., Колесников С.Ф., Кузьмина С.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Горбатов Е.С., Колесников С.Ф., Кузьмина С.А.</copyright-holder><copyright-holder xml:lang="en">Gorbatov E.S., Kolesnikov S.F., Kuzmina S.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/1526">https://geomorphology.igras.ru/jour/article/view/1526</self-uri><abstract><p>Термокарстовые озера и образующиеся при их участии особые формы рельефа – аласы, широко распространены на территории Северо-Востока России. Отложения аласного комплекса занимают важное место в составе четвертичных отложений этого региона. Их возраст преимущественно голоценовый, более древние образования встречаются значительно реже. Отложения древнего аласного комплекса (нижний – верхний неоплейстоцен) были изучены нами в разрезах на побережье моря Лаптевых (Ойягосский яр, п-ов Широкостан). Строение толщ разного возраста, относящихся к аласному комплексу, похоже. Их формирование связано с неоднократными эпохами потепления и увлажнения климата, причем наиболее важным явилось увеличение влажности. Протаивание сильнольдистых толщ носило локальный характер и наиболее ярко проявилось в местах скопления воды, где образовывались замкнутые термокарстовые котловины, в которых формировались аласные отложения с многоярусным комплексом псевдоморфоз по полигонально-жильным льдам (ПЖЛ). Полученные результаты позволяют расширить представления о распространении древнего аласного комплекса на территории Северо-Востока России, выявить некоторые его диагностические особенности (наличие таберитов, озерных отложений с комплексом псевдоморфоз по ПЖЛ, увеличение крупности озерных осадков от центра к периферии котловин, большое количества аллохтонного торфа в середине и автохтонного в кровле аласных толщ), наметить пути получения палеогеографической информации из данного типа отложений.</p></abstract><trans-abstract xml:lang="en"><p>Thermokarst lakes and alases are widespread in the North-East of Russia. These structures are part of Quaternary deposit of the region and mostly of Holocene age. The alas complex of the older age is less common. Here we present the study of alas complex sections as old as Lower – Upper Neopleistocene from the Laptev Sea coast (Oyagoss yar, Shirokostan peninsula). The principal composition of these structures of different ages is quite similar. Their formation is correlated with warm intervals when the moisture content increased. Melting of the ice-rich sediment took place locally. Accumulation of the melted water increased the melting and lead to formation of separated thermokarst depressions where succession of the lake-bog-soil sediments with ice-wedge casts (pseudomorphosis) began to accumulate. Current research expands the knowledge about distribution of the alas complex in the north-eastern Russia, allows to recognize its features (the presence of tabers, lacustrine sediments with a complex of pseudomorphs along the ice wedge, the increase in grain size of lacustrine sediments from the center to the periphery of the basins, a large number of values of allochthonous peat in the middle and autochthonous in the top of alas strata), and suggests how to extract paleogeographic information from this type of deposit. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>Северо-Восток России</kwd><kwd>четвертичные отложения</kwd><kwd>ледовый комплекс</kwd><kwd>аласные отложения</kwd><kwd>полигонально-жильные льды</kwd><kwd>псевдоморфозы</kwd><kwd>структуры облекания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>North-East of Russia</kwd><kwd>Quaternary deposits</kwd><kwd>Ice complex</kwd><kwd>Alas deposits</kwd><kwd>wedge polygonal ice</kwd><kwd>ice wedge casts</kwd><kwd>draping structure</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность С.Д. 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