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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">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">litosphere-69</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>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Доордовикские фосфориты и палеоокеанография: краткий геохимический экскурс в систематику редкоземельных элементов</article-title><trans-title-group xml:lang="en"><trans-title>Pre-Ordovician phosphorites and paleooceanography: a brief excursus into geochemical systematics of rare earth elements</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>Маслов</surname><given-names>Андрей Викторович</given-names></name><name name-style="western" xml:lang="en"><surname>Maslov</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">amas2004@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии и геохимии УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geology and Geochemistry, Urals Branch of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>02</month><year>2017</year></pub-date><volume>0</volume><issue>1</issue><fpage>5</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Маслов А.В., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Маслов А.В.</copyright-holder><copyright-holder xml:lang="en">Maslov A.V.</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.lithosphere.ru/jour/article/view/69">https://www.lithosphere.ru/jour/article/view/69</self-uri><abstract><p>Настоящая публикация представляет собой обзор систематики редкоземельных элементов в доордовикских фосфоритах разных регионов мира. На основе анализа значительного банка данных показано, что в настоящее время не существует универсальных параметров, руководствуясь которыми можно было бы в той или иной степени однозначно судить о седиментационных и диагенетических обстановках формирования фосфоритов, в первую очередь - редокс-обстановках. Любые реконструкции этого плана нуждаются в тщательном анализе как геологических фактов, так и обширной и разнообразной геохимической информации.</p></abstract><trans-abstract xml:lang="en"><p>This publication provides an overview of the rare earth elements systematics in Pre-Ordovician phosphorites from various regions of the world. Based on the analysis of significant data bank it shows that currently there are no universal parameters, guided by which, could be more or less clearly to judge sedimentary and diagenetic environments of formation of phosphate rock in the first place - redox environments. Any reconstruction of this plan require a careful analysis of how the geological facts, and extensive and diverse geochemical information.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фосфориты</kwd><kwd>систематика РЗЭ</kwd><kwd>нижний протерозой</kwd><kwd>рифей</kwd><kwd>эдиакарий</kwd><kwd>венд</kwd><kwd>кембрий</kwd><kwd>phosphorite</kwd><kwd>REE systematics</kwd><kwd>Lower Proterozoic</kwd><kwd>Riphean</kwd><kwd>Ediacarian</kwd><kwd>Vendian</kwd><kwd>Cambrian</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">Аблизин Б.Д., Клюжина М.Л., Курбацкая Ф.А., Курбацкий А.М. (1982) Верхний рифей и венд западного склона Среднего Урала. М.: Наука, 140 с.</mixed-citation><mixed-citation xml:lang="en">Аблизин Б.Д., Клюжина М.Л., Курбацкая Ф.А., Курбацкий А.М. (1982) Верхний рифей и венд западного склона Среднего Урала. 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