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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">aari</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Арктики и Антарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Antarctic Research</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0555-2648</issn><issn pub-type="epub">2618-6713</issn><publisher><publisher-name>Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30758/0555-2648-2018-64-2-182-199</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-15</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>ГЕОЛОГИЯ И ГЕОФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GEOLOGY AND GEOPHYSICS</subject></subj-group></article-categories><title-group><article-title>Геологическое и палеоокеанологическое значение псефитового материала из меловых-кайнозойских отложений приполюсной части хребта Ломоносова</article-title><trans-title-group xml:lang="en"><trans-title>Geological and paleooceanological significance  of psephite from the cretaceous-cenozoic deposits from the near-pole part of the Lomonosove ridge</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>Крылов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург, Иркутск</p></bio><bio xml:lang="en"/><email xlink:type="simple">akrylow@gmail.co</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>Гусев</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gusev</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>St. Petersburg</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>Миролюбова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Mirolubova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>St. Petersburg</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>Черных</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernykh</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Всероссийский научно-исследовательский институт геологии и минеральных ресурсов Мирового океана имени академика И.С. Грамберга» (ФГБУ «ВНИИОкеангеология»)»; Институт наук о Земле, Санкт-Петербургский государственный университет; ФГБУН Лимнологический институт СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI «All-Russian Scientific Research Institute of Geology and Mineral Resources of the World Ocean» named after academician I.S. Gramberg (FSBI “VNIIOkeangeologia”); Institute of Earth Sciences, St. Petersburg State University; Limnological Institute Siberian Branch of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ «Всероссийский научно-исследовательский институт геологии и минеральных ресурсов Мирового океана имени академика И.С. Грамберга» (ФГБУ «ВНИИОкеангеология»)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI «All-Russian Scientific Research Institute of Geology and Mineral Resources of the World Ocean» named after academician I.S. Gramberg (FSBI “VNIIOkeangeologia”)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «Всероссийский научно-исследовательский институт геологии и минеральных ресурсов Мирового океана имени академика И.С. Грамберга» (ФГБУ «ВНИИОкеангеология»); Институт наук о Земле, Санкт-Петербургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI «All-Russian Scientific Research Institute of Geology and Mineral Resources of the World Ocean» named after academician I.S. Gramberg (FSBI “VNIIOkeangeologia”); Institute of Earth Sciences, St. Petersburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2018</year></pub-date><volume>64</volume><issue>2</issue><fpage>182</fpage><lpage>199</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Крылов А.А., Гусев Е.А., Миролюбова Е.С., Черных А.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Крылов А.А., Гусев Е.А., Миролюбова Е.С., Черных А.А.</copyright-holder><copyright-holder xml:lang="en">Krylov A.A., Gusev E.A., Mirolubova E.S., Chernykh A.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://www.aaresearch.science/jour/article/view/15">https://www.aaresearch.science/jour/article/view/15</self-uri><abstract><p>Дается характеристика псефитового материала, полученного при бурении скважины IODP-302 на хребте Ломоносова. Приводятся данные о форме обломков, их окатанности, петрографическому составу и распределению по литостратиграфическим комплексам скважины. Показано, что основная часть грубозернистых обломков была доставлена к точке бурения льдами, однако несколько образцов имеют местное происхождение и характеризуют состав мезозойских пород. Окатанность псефитов закономерно ухудшается с омоложением вмещающих отложений. В работе приведены аргументы, связывающие эту тенденцию с усилением ледового режима. Следствием увеличения ледовитости является сокращение времени нахождения псефитов в волно-прибойной зоне, в которой происходит окатывание крупномерного материала, за счет активизации якорного захвата обломков пород. Изменение петрографических ассоциаций псефитов в целом совпадает с изменением ассоциаций тяжелых минералов, что является следствием появления более дальних источников сноса. Показано, что палео-трансполярная система ледового дрейфа начала функционировать в среднем миоцене. Сделаны выводы об особенностях эволюции ледового режима в Северном Ледовитом океане в кайнозойское время.</p></abstract><trans-abstract xml:lang="en"><p>The article gives a characteristic of the psephitic material obtained in the IODP-302 well on the Lomonosov Ridge. We provide data on the shape of rock fragments, their roundness, petrographic composition and distribution over lithological units of the well. It is shown that the major part of the psephites was delivered to the drilling point with ice, but several samples have a local origin and characterize the composition of the Mesozoic rocks. The roundness of the psephites consistently deteriorates in the younger enclosing sediments. The paper presents arguments that link this trend with the intensification of the ice regime. The consequence of the ice cover increase is the shortening of the time of psephites occurrence in the wave-surf zone, where large-sized material is rounding, by activating the “anchor” mechanism of the rock fragments capture. The level of change in petrographic associations of psephites generally coincides with the level of change in the association of heavy minerals, which is a consequence of the appearance of more distant sources areas. It is shown that the “paleo–trans–polar” ice drift system began to function in the middle Miocene. The paper draws conclusions about the evolution of the ice regime in the Arctic Ocean during the Cenozoic.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ледовый разнос</kwd><kwd>палео-трансполярный ледовый дрейф</kwd><kwd>Северный Ледовитый океан</kwd><kwd>хребет Ломоносова</kwd><kwd>псефиты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Arctic Ocean</kwd><kwd>ice rafting</kwd><kwd>Lomonosov Ridge</kwd><kwd>paleo-trans-polar drift system</kwd><kwd>psephites</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Backman J., Jakobsson M., Frank M., Sangiorgi F., Brinkhuis H., Stickley C., O’Regan M., Løvlie R., Pälike H., Spofforth D., Gattacecca J., Moran K., King J., Heil C. Age model and core-seismic integration for the Cenozoic Arctic Coring expedition sediments from the Lomonosov Ridge // Paleoceanography. 2008. V. 23. 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