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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">nsc</journal-id><journal-title-group><journal-title xml:lang="en">Archaeology, Ethnology &amp; Anthropology of Eurasia</journal-title><trans-title-group xml:lang="ru"><trans-title>Археология, этнография и антропология Евразии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0110</issn><publisher><publisher-name>IAET SB RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17746/1563-0110.2024.52.4.059-074</article-id><article-id custom-type="elpub" pub-id-type="custom">nsc-2015</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>PALEOENVIRONMENT. THE STONE AGE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ПАЛЕОЭКОЛОГИЯ. КАМЕННЫЙ ВЕК</subject></subj-group></article-categories><title-group><article-title>Rocks and Their Sources in the Upper Paleolithic of the Altai: Relevance to Bifacial Technologies</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1576-3188</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Vishnevsky</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Researcher, Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences; Senior Researcher, Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090,</p><p>pr. Akademika Koptyuga 3, Novosibirsk, 630090</p></bio><email xlink:type="simple">vishnevsky@igm.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7054-3738</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Belousova</surname><given-names>N. Е.</given-names></name></name-alternatives><bio xml:lang="en"><p>Senior Researcher</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090</p></bio><email xlink:type="simple">consacrer@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7812-8037</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Fedorchenko</surname><given-names>A. Y.</given-names></name></name-alternatives><bio xml:lang="en"><p>Researcher</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090</p></bio><email xlink:type="simple">winteralex2008@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7861-5983</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Mikhienko</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Junior Researcher</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090</p></bio><email xlink:type="simple">volnavvv@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5082-3345</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Kozlikin</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="en"><p>Senior Researcher</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090</p></bio><email xlink:type="simple">kmb777@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1388-2308</contrib-id><name-alternatives><name name-style="western" xml:lang="en"><surname>Shunkov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Chief Researcher, Department Head</p><p>pr. Akademika Lavrentieva 17, Novosibirsk, 630090</p></bio><email xlink:type="simple">shunkov77@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences;&#13;
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>01</month><year>2025</year></pub-date><volume>52</volume><issue>4</issue><fpage>59</fpage><lpage>74</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Vishnevsky A.V., Belousova N.Е., Fedorchenko A.Y., Mikhienko V.A., Kozlikin M.B., Shunkov M.V., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Vishnevsky A.V., Belousova N.Е., Fedorchenko A.Y., Mikhienko V.A., Kozlikin M.B., Shunkov M.V.</copyright-holder><copyright-holder xml:lang="en">Vishnevsky A.V., Belousova N.Е., Fedorchenko A.Y., Mikhienko V.A., Kozlikin M.B., Shunkov M.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://journal.archaeology.nsc.ru/jour/article/view/2015">https://journal.archaeology.nsc.ru/jour/article/view/2015</self-uri><abstract><p>On the basis of the analysis of thin leaf-shaped bifacial points, which are very elaborate and sensitive to the quality of rocks, we reconstruct the adaptive strategies of humans at the early stages of the Upper Paleolithic. Mineral raw materials and their exploitation relating to different resource bases of the central (the Ursul River basin) and northwestern (the Anuy River basin) parts of the Altai region are analyzed. To attribute the rock sources for bifaces, we have compiled a comparative database of petrographic and petrochemical characteristics of artifacts and pebbles from nearby rivers. Chemical criteria were proposed for differentiating rocks, including those that are hard to distinguish, and non-destructive techniques were applied to assess the chemical composition of rocks using a portable XRF spectrometer. Findings suggest that rocks available in the Anuy and Ursul basins met the conditions for biface manufacture. Bifaces from the Ursul valley were made of local fine-grained rocks—felsic volcanic tuff and ignimbrite; those from the Anuy valley were also of local rocks, but of lower quality—hornfels transformed (meta-sedimentary) siltstone and finegrained sandstone or felsic volcanic rocks. In the Anuy valley, scarcity of quality raw material was compensated for by imported high silica jasper-like rocks. Results suggest that the Early Upper Paleolithic inhabitants of the region, when implementing technical skills, showed stable behavioral and technological stereotypes despite habitat change and deterioration of the resource base.</p></abstract><kwd-group xml:lang="en"><kwd>Thin bifaces</kwd><kwd>raw material strategies</kwd><kwd>petrochemistry</kwd><kwd>X-ray fluorescence analysis (pXRF)</kwd><kwd>portable XRF</kwd><kwd>scanning electron microscopy (SEM EDS)</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This study was supported by the Russian Science Foundation, Grant No. 20-78-10125</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">Belousova N.E. 2018 Kamenniye industrii nachala verkhnego paleolita Gornogo Altaya. Cand. 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