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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">geology</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Геология и разведка</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of higher educational establishments. Geology and Exploration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0016-7762</issn><issn pub-type="epub">2618-8708</issn><publisher><publisher-name>Sergo Ordzhonikidze Russian State University for Geological Prospecting</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32454/0016-7762-2015-3-19-25</article-id><article-id custom-type="elpub" pub-id-type="custom">geology-39</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>МИНЕРАЛОГИЯ, ПЕТРОГРАФИЯ, ЛИТОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MINERALOGY, PETROGRAPHY, LITHOLOGY</subject></subj-group></article-categories><title-group><article-title>Ассоциации ооидов и строматолитов - стресс для бентосных экосистем</article-title><trans-title-group xml:lang="en"><trans-title>Ooid-stromatolite association - a stress for benthic ecosystems</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>Антошкина</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Antoshkina</surname><given-names>A. I.</given-names></name></name-alternatives><email xlink:type="simple">Antoshkina@geo.komisc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии Коми НЦ УрО РАН; Институт естественных наук ФГБОУ ВО СГУ им. П. Сорокина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geology, Komi Science Centre, Ural Branch, Russian Academy of Sciences; Institute of Natural Sciences, Pitirim Sorokin Syktyvkar State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2015</year></pub-date><volume>0</volume><issue>3</issue><fpage>19</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Антошкина А.И., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Антошкина А.И.</copyright-holder><copyright-holder xml:lang="en">Antoshkina A.I.</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.geology-mgri.ru/jour/article/view/39">https://www.geology-mgri.ru/jour/article/view/39</self-uri><abstract><p>Исследования ооидно-строматолитовых ассоциаций мощностью от 0,5 до 9 м в нижнепалеозойских разрезах Тимано-Североуральского региона показали, что появление таких ассоциаций определяется регрессией морского бассейна. В результате последующей палеоландшафтной дифференциации дна бассейна изменяются гидрохимический и гидродинамический режим водоёма. Это приводило к возниконовению спокойно-водных обстановок, экспансии микробных и бактериальных сообществ и эвтрофии вод, падению кальциевого баланса морских вод и реорганизации бентосных экосистем с преобладанием преимущественно эврифациальных и эвригалинных организмов - остракод, гастропод, бивалвий. Данные по изотопному составу углерода (-5,4...-6,4%с PDB) и кислорода (22,9 ... 24,6%с SNOW) и низкие содержания бора (11-30 г/т) в венлокских ооидных известняков свидетельствуют о существовании опреснённых водоёмов в это время.</p></abstract><trans-abstract xml:lang="en"><p>This study reports the occurrence of ooid-stromatolite association (0,5-9 m in thickness) in the Lower Paleozoic sections of the Timan-northern Ural region. Well-preserved different fabrics seen in ancient ooids and stromatolites have previously been interpreted with respect to paleoenvironmental conditions which brought changes in benthic ecosystems. Results from current study suggest that it is possible that the connection of ooids with stromatolites at the time-levels depends on their genetic relationship due to abundance of microbial inhabits during periods of shallow water marine basin regressions. During regression in the result of further paleolandscape differentiation of the bottom the hydrochemical and hydrodynamic regimes of the water reservoir changed. It lead to the quiet-water environments, expansion of microbe and bacterial associations and eutrophy of waters, calcium balance of sea waters fall and reorganization of benthos ecosystems with dominance of mostly euryfacial and euryhaline organisms - Ostracods, gastropods and bivalves. Bulk carbonate values from the Wenlock limestones with ooids average -5,4...-6,4% for S13C PDB and 22,9...24,6% for S18O SNOW. Additionally, a low content of boron 11-30g/t in these limestones also indicates the lowered salinity of waters.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ооидно-строматолитовые ассоциации</kwd><kwd>бентос</kwd><kwd>спокойно-водные обстановки</kwd><kwd>нижний палеозой</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ooid-stromatolite associations</kwd><kwd>benthos</kwd><kwd>quiet-water environments</kwd><kwd>Lower Paleozoic</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">Антошкина А.И., Шеболкин Д.Н. Генетическая интерпретация ооидных образований (на примере венлокских отложений южной части гр. Чернышева) // Мат. Всероссийского совещания «Геохимия литогенеза». Сыктывкар: Геопринт, 2014. 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