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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gesj</journal-id><journal-title-group><journal-title xml:lang="en">GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</journal-title><trans-title-group xml:lang="ru"><trans-title>GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-9388</issn><issn pub-type="epub">2542-1565</issn><publisher><publisher-name>Russian Geographical Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24057/2071-9388-2021-063</article-id><article-id custom-type="elpub" pub-id-type="custom">gesj-2177</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="en"><subject>Special Issue "Permafrost regions in transition"</subject></subj-group></article-categories><title-group><article-title>Genetic Identification Of Ground Ice By Petrographic Method</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Tikhonravova</surname><given-names>Yana V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Yakutsk, 677010</p></bio><email xlink:type="simple">tikh-jana@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Rogov</surname><given-names>Viktor V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Moscow, 119991</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Slagoda</surname><given-names>Elena A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Tyumen, 625026</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-3"><institution>Earth Cryosphere Institute Tyumen Scientific Centre Siberian Branch, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>12</month><year>2021</year></pub-date><volume>14</volume><issue>4</issue><fpage>20</fpage><lpage>32</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Tikhonravova Y.V., Rogov V.V., Slagoda E.A., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Tikhonravova Y.V., Rogov V.V., Slagoda E.A.</copyright-holder><copyright-holder xml:lang="en">Tikhonravova Y.V., Rogov V.V., Slagoda E.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://ges.rgo.ru/jour/article/view/2177">https://ges.rgo.ru/jour/article/view/2177</self-uri><abstract><p>The advantages and limitations of the petrography method and the relevance of its use for the study of natural ice are reviewed in the present work. The petrographic method of ground ice study is often used for solving paleogeographic issues. The petrofabric analysis of ground ice is not only useful for descriptive purposes but, like the study of cryostructures, helps to infer growth processes and conditions. Different types of natural ice have specific features that can help us to determine ice genesis. Surface ice, such as glacier ice is often presented by foliation formed by large crystals (50-60 mm); lake ice is characterised by the upper zone of small (6 mm x 3 mm) dendritic and equigranular crystals, which change with increasing depth to large (may exceed 200 mm) columnar and prismatic crystals; segregated ice is composed by crystals forming foliation. Ground ice, such as ice wedge is presented by vertical-band appearance and small crystals (2-2.5 mm); closed-cavity ice is often distinguished by radial-ray appearance produced by elongated ice crystals; injection ice is composed by anhedral crystals, showing the movement of water; snowbank ice is presented by a high concentration of circular bubbles and small (0.1-1 mm) equigranular crystals; icing is described by foliation and mostly columnar crystals. Identification of the origin of ground ice is a complicated task for geocryology because it is difficult to distinguish different types of ground ice based on only visual explorations. The simplest way to get an ice texture pattern is by using polarized light. Distinctions between genetic types of ground ice are not always made in studies, and that can produce erroneous inferences. Petrography studies of an ice object are helpful to clarify the data interpretation, e.g., of isotopic analyses. It is particularly relevant for heterogeneous ice wedges’ study.</p></abstract><kwd-group xml:lang="en"><kwd>ice texture</kwd><kwd>ice appearance</kwd><kwd>polarized light</kwd><kwd>ice crystallography</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">Bonath V., Petrich C., Sand B., Fransson L. and Cwirzen A. (2018). Morphology, internal structure and formation of ice ridges in the sea around Svalbard. Cold Regions Science and Technology, 155, 263-279, DOI: 10.1016/j.coldregions.2018.08.011.</mixed-citation><mixed-citation xml:lang="en">Bonath V., Petrich C., Sand B., Fransson L. and Cwirzen A. (2018). Morphology, internal structure and formation of ice ridges in the sea around Svalbard. 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