TY - JOUR

T1 - Afontova Gora II archaeological site: Geology and postdepositional deformation (Krasnoyarsk, Siberia)

AU - Zolnikov, I. D.

AU - Deev, E. V.

AU - Slavinskiy, V. S.

AU - Tsybankov, A. A.

AU - Rybin, E. P.

AU - Lysenko, D. N.

AU - Stasyuk, I. V.

N1 - The study was supported by grant 14-50-00036 from the Russian Science Foundation.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - The Afontova Gora II archaeological site located within two geologically and geomorphically different areas has been studied in terms of geology and Quaternary deposition history. Both areas lie upon alluvial terrace II of the Yensei River. At the time when terrace I alluvium was deposited, aeolian and slope-wash facies accumulated on the surface of terrace II and a slope-wash apron formed on the gently sloping surface of terrace III. It is at these different levels of the Yenisei River bank that the latest Paleolithic Afontov culture of Siberia has been found. At the Late Glacial-Holocene boundary, the slope-wash apron upon terrace III was involved in landsliding and thrust over terrace II, which deformed the subaerial deposits over both terraces II and III. As shown by detailed analysis, the landslide deposits are either strongly deformed to the degree of losing of their primary sedimentary textures and structures or form imbricated blocks with deformed margins but minor deformation in their interior. The preserved textures and structures of sediments inside the imbricated landslide blocks provide stratigraphic and genetic constraints and prove the in situ origin of anthropological, archaeological, and paleontological finds. This division also explains the archaeological sterility and abnormal thickness of the subaerial cover upon the landslide blocks.

AB - The Afontova Gora II archaeological site located within two geologically and geomorphically different areas has been studied in terms of geology and Quaternary deposition history. Both areas lie upon alluvial terrace II of the Yensei River. At the time when terrace I alluvium was deposited, aeolian and slope-wash facies accumulated on the surface of terrace II and a slope-wash apron formed on the gently sloping surface of terrace III. It is at these different levels of the Yenisei River bank that the latest Paleolithic Afontov culture of Siberia has been found. At the Late Glacial-Holocene boundary, the slope-wash apron upon terrace III was involved in landsliding and thrust over terrace II, which deformed the subaerial deposits over both terraces II and III. As shown by detailed analysis, the landslide deposits are either strongly deformed to the degree of losing of their primary sedimentary textures and structures or form imbricated blocks with deformed margins but minor deformation in their interior. The preserved textures and structures of sediments inside the imbricated landslide blocks provide stratigraphic and genetic constraints and prove the in situ origin of anthropological, archaeological, and paleontological finds. This division also explains the archaeological sterility and abnormal thickness of the subaerial cover upon the landslide blocks.

KW - deformation

KW - landslide

KW - Paleolithic

KW - terrace

UR - http://www.scopus.com/inward/record.url?scp=85013007939&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=29484035

U2 - 10.1016/j.rgg.2016.04.016

DO - 10.1016/j.rgg.2016.04.016

M3 - Article

AN - SCOPUS:85013007939

VL - 58

SP - 190

EP - 198

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 2

M1 - 4

ER -