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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">10.32454/0016-7762-2019-4-26-36</article-id><article-id custom-type="elpub" pub-id-type="custom">geology-426</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>Цикличность палеозойского рифообразования разных порядков*</article-title><trans-title-group xml:lang="en"><trans-title>Different order cyclicity of the Paleozoic reef formation</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>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsov</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>65, Ленинский проспект, Москва 119991</p></bio><bio xml:lang="en"><p>Building 1, 65, Leninsky prosp., Moscow 119991</p></bio><email xlink:type="simple">vgkuz@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>Журавлева</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhuravleva</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>65, Ленинский проспект, Москва 119991</p></bio><bio xml:lang="en"><p>Building 1, 65, Leninsky prosp., Moscow 119991</p></bio><email xlink:type="simple">zhurawlewa.lilia@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>РТУ нефти и газа (НИУ) имени И.М. Губкина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Gubkin Russian State University of Oil and Gas (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>03</day><month>09</month><year>2019</year></pub-date><volume>0</volume><issue>4</issue><fpage>26</fpage><lpage>36</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кузнецов В.Г., Журавлева Л.М., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Кузнецов В.Г., Журавлева Л.М.</copyright-holder><copyright-holder xml:lang="en">Kuznetsov V.G., Zhuravleva L.M.</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/426">https://www.geology-mgri.ru/jour/article/view/426</self-uri><abstract><p>В палеозойском разрезе выделены пять крупных циклов рифообразования — раннекембрийский, средне—позднеордовикский, силурийско-девонский, поздневизейско-серпуховский и пермский, верхние границы которых определяются соответствующими периодами с биотическими кризисами и массовыми вымираниями на границах ранний—средний кембрий, ордовик—силур (или хирнант—рудданиан), фран—фамен, серпухов—башкир, и пермь—триас. Циклы различаются по распространенности рифов в пределах планеты, составу и групповому разнообразию рифостроящей биоты и длительности рифообразования. В наиболее длительных — силурийско—девонском и пермском циклах отчётливо наблюдаются периоды относительного снижения интенсивности рифостроения, подразделяющие первые на две части — циклы второго порядка. Их появление обусловлено глобальными палеогеографическими и палеоклиматическими причинами, а в начале девона, возможно, помимо названных причин важную роль сыграло и глобальное биотическое событие — появление наземной биоты и соответственно определённое перераспределение потока питательных компонентов — нутриентов — с водной оболочки на сушу. Во всех случаях установлены циклы третьего порядка, образование которых определяется сугубо регионально-геологические причинами, такими как колебания уровня моря, осолонение водоёмов, что фиксируется перекрытием рифов терригенными, глинистыми или соленосными породами. Аналогично воздействие вулканизма, когда эксплозивная деятельность прекращает рост рифов.</p></abstract><trans-abstract xml:lang="en"><p>There are five great cycles of reef formation in Paleozoic — Early Cambrian, Middle—Late Ordovician, Silu-rian—Devonian, Late Visean—Serpukhovian and Permian. Their upper limits are determined by the corresponding periods of biotic crises and mass extinction events which have been at the borders of the Middle—Late Cambrian, Or-dovician—Silurian, Frasnian—Famenian, Serpukhovian—Baskirian, Permian—Triassic. Cycles differ in the reef prevalence within the planet, in the composition and group diversity of reef-building biota and the duration of reef formation. The longest Silurian—Devonian and Permian cycles are divided with periods of relative decrease in the intensity of reef building into two parts and these periods are clearly observed. These are second order cycles. The bases of this division are global paleogeographic and paleoclimatic causes, and at the beginning of Devon, perhaps, in addition to these reasons, an important role was played by the global biotic event — the appearance of terrestrial biota and, accordingly, a certain redistribution of the flow of nutrients from the ocean to land. In all cases, third-order cycles have been established, the formation of which is determined by purely regional-geological reasons, such as sea level fluctuations, salinity of basins, which are fixed by the overlap of reefs with terrigenous, clay or saline rocks. Similar role is played by the volcanism, as explosive activity stops the growth of reefs.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>каркасные рифы</kwd><kwd>цикличность рифообразования</kwd><kwd>биологические</kwd><kwd>глобальные и региональные геологические события</kwd></kwd-group><kwd-group xml:lang="en"><kwd>framework reefж</kwd><kwd>cyclicity of reef formation</kwd><kwd>biological</kwd><kwd>global and regional geological events</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">Алексеев А.С. Глобальные биогенные кризисы и массовые вымирания в фанерозойской истории Земли // Биотические события на основных рубежах фанерозоя. М.: Изд-во МГУ, 1989. С. 22-47.</mixed-citation><mixed-citation xml:lang="en">Alekseev A.S. Global biogenic crises and mass extinctions in the Phanerozoic Earth history. 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