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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">geores</journal-id><journal-title-group><journal-title xml:lang="ru">Георесурсы</journal-title><trans-title-group xml:lang="en"><trans-title>Georesources</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1608-5043</issn><issn pub-type="epub">1608-5078</issn><publisher><publisher-name>Georesursy LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18599/grs.2024.4.17</article-id><article-id custom-type="elpub" pub-id-type="custom">geores-412</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>ГЕОЛОГО-ГЕОХИМИЧЕСКИЕ ИССЛЕДОВАНИЯ, ПОИСК И РАЗВЕДКА МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GEOLOGICAL AND GEOCHEMICAL RESEARCH, PROSPECTING AND EXPLORATION OF DEPOSITS</subject></subj-group></article-categories><title-group><article-title>Органическая геохимия горючих сланцев Кашпирского месторождения (Самарская область)</article-title><trans-title-group xml:lang="en"><trans-title>Organic Geochemistry of Bituminous Shales in the Kashpirskoe field (Samara region)</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>Тимошина</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Timoshina</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Дмитриевна Тимошина – кандидат геол.-минерал. наук, старший научный сотрудник.</p><p>630090, Новосибирск, пр. ак. Коптюга, д. 3</p></bio><bio xml:lang="en"><p>Irina D. Timoshina – Cand. Sci. (Geology and Mineralogy), Senior Researcher.</p><p>3 Ac. Koptyug av., Novosibirsk, 630090</p></bio><email xlink:type="simple">TimoshinaID@ipgg.sbras.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>Иванова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Николаевна Иванова – вед. инженер.</p><p>630090, Новосибирск, пр. ак. Коптюга, д. 3</p></bio><bio xml:lang="en"><p>Elena N. Ivanova – Leading Engineer.</p><p>3 Ac. Koptyug av., Novosibirsk, 630090</p></bio><email xlink:type="simple">IvanovaEN@ipgg.sbras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2024</year></pub-date><volume>26</volume><issue>4</issue><fpage>32</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тимошина И.Д., Иванова Е.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тимошина И.Д., Иванова Е.Н.</copyright-holder><copyright-holder xml:lang="en">Timoshina I.D., Ivanova E.N.</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.geors.ru/jour/article/view/412">https://www.geors.ru/jour/article/view/412</self-uri><abstract><p>Изученные верхнеюрские и нижнемеловые горючие сланцы Кашпирского месторождения содержат органическое вещество (ОВ) террагенное по изотопному составу углерода (δ13С &gt; –24‰) и аквагенное по пиролитическим характеристикам (HI &gt; 500 мг уВ/ г Сорг). Сланцы содержат автохтонные битумоиды, являющиеся аквагенными (Pr/Ph ≤ 0,5, Ph/nC18 &gt; 1, распределение биостеранов с С29/С27 ≤ 1,5, присутствие длинноцепочечных алкилнафталинов – индикатора морских водорослей Gloeocapsomorpha prisca, «V-образное» распределение метилдибензотиофенов). При этом ряд параметров соответствует террагенному ОВ (в н-алканах nC27/nC17 &gt;&gt; 1, Pmax(0,6–0,7) &gt; Paq (0,4–0,5), в ароматической фракции от мечен индикатор хвойных растений ретен), что свидетельствует о близости суши. В образцах найдены производные изорениератена – биомаркеры специфических бактерий Chlorobiaceae. Cледовательно, несмотря на вероятную близость суши, в фотическом слое бассейна седиментации возникала аноксия. Наличие диастеренов указывает на диагенетические преобразования также в условиях аноксии осадка. По результатам пиролиза ОВ катагенетически слабо зрелое (очень низкие Tmax), что подтверждается составом битумоида (в н-алканах CPI ≥ 1,7, высокие отношения Pr/nC17 и Ph/nC18, отсутствие изо- и диастеранов, присутствие биостеранов и стеренов, низкие концентрации или отсутствие типичных терпанов, присутствие биогопанов и гопенов, низкое отношение гомогопанов С31 22s/(22s+22r) &lt;&lt; 0,5, низкие отношения MDR (0,5–1,0) и MPI-1 (0,4–0,8), в основном отсутствуют (еще не образовались) монои триароматические стероиды). Не охарактеризованные фауной нижнемеловые сланцы из пограничного интервала между волжским и рязанским ярусами более обогащены террагенными компонентами по сравнению с верхнеюрскими горючими сланцами из аммонитовой зоны Dorsoplanites panderi. Особенности в характеристиках изученных сланцев связаны с зависящей от палеогеографического расположения генетической спецификой ОВ, с аноксией в воде и осадке при накоплении ОВ и с его слабой катагенетической зрелостью при довольно высоких концентрациях.</p></abstract><trans-abstract xml:lang="en"><p>The studied Upper Jurassic and Lower Cretaceous bituminous shales of the Kashpirskoe field contain organic matter (OM) terrestrial in carbon isotopic composition (δ13C &gt; –24‰) and marine in pyrolytic characteristics (HI &gt; 500 mg HC/g TOC). Shales contain autochthonous bitumens that are marine (Pr/Ph ≤ 0.5, Ph/nC18&gt; 1, distribution of biosteranes with C29/C27 ≤ 1.5, presence of long-chain alkyl naphthalenes – indicator of marine algae Gloeocapsomorpha prisca, “V-shaped” distribution of methyldibenzothiophenes). At the same time, a number of parameters correspond to the terrestrial OM (in n-alkanes nC27/nC17 &gt;&gt;1, Pwax (0.6–0.7) &gt; Paq(0.4–0.5), the indicator of coniferous plants reten is marked in the aromatic fraction), which indicates the proximity of land. Isorenieratene derivatives, biomarkers of specific Chlorobiaceae bacteria, were found in the samples; therefore, despite the probable proximity of land, anoxia occurred in the photic layer of the sedimentation basin. The presence of diasterenes indicates diagenetic transformations also under conditions of anoxic sediment. According to the results of pyrolysis, the OM is catagenetically weakly mature (very low Tmax), which is confirmed by the composition of the bitumen (CPI ≥ 1.7 in n-alkanes, high Pr/nC17 and Ph/nC18 ratios, absence of isoand diasteranes, presence of biosteranes and sterenes, low concentrations or absence of typical terpanes, presence of biohopanes and hopenes, low the ratio of homohopanes C3122S/(22S+22R) &lt;&lt; 0.5, low ratios of MDR (0.5–1.0) and MPI-1 (0.4–0.8), mostly absent (not yet formed) monoand triaromatic steroids).</p><p>The Lower Cretaceous shales from the boundary interval between the Volgian and Ryazan stages, not characterized by fauna, are more enriched in terrestrial components compared to the Upper Jurassic oil shales from the Dorsoplanites panderi ammonite zone. The peculiarities in the characteristics of the studied shales are associated with the genetic specificity of the OM, with anoxia in water and sediment with the accumulation of OM, and with its weak catagenetic maturity at fairly high concentrations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Самарская область</kwd><kwd>Кашпирское месторождение</kwd><kwd>горючие сланцы</kwd><kwd>пиролиз</kwd><kwd>изотопы</kwd><kwd>углеводороды-биомаркеры</kwd><kwd>генезис и катагенез органического вещества</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Samara region</kwd><kwd>the Kashpirskoe field</kwd><kwd>bituminous shale</kwd><kwd>pyrolysis</kwd><kwd>isotopes</kwd><kwd>biomarker hydrocarbons</kwd><kwd>genesis and catagenesis of organic matter</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы благодарят О.С. Дзюбу за предо ставление коллекции пород Кашпирского ме сторождения для геохимических исследований и за палеонтологические консультации</funding-statement><funding-statement xml:lang="en">The authors thank O.S. Dzyuba for providing a collection of rocks from the Kashpir deposit for geochemical research and for paleontological consultations</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Борисова Л.С., Фурсенко Е.А., Костырева Е.А., Тимошина И.Д. (2019). Комплекс химических и физических методов получения и исследования компонентов органического вещества пород и нафтидов. Новосибирск: ИПЦ НГу, 84 с.</mixed-citation><mixed-citation xml:lang="en">Affouri H., Sahraoui O. (2017). The sedimentary organic matter from a Lake Ichkeul core (far northern Tunisia): Rock-Eval and biomarker approach. 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