TY - JOUR

T1 - On the Age and Genesis of the Verkhnyaya Gora Strata of the Kurtak Region, Middle Yenisei

AU - Zolnikov, I. D.

AU - Borodin, A. V.

AU - Markova, E. A.

AU - Filatov, E. A.

AU - Klementiev, A. M.

AU - Yalkovskaya, L. E.

AU - Frolov, P. D.

AU - Fetisov, I. S.

AU - Bordyugova, E. A.

AU - Glushkova, N. V.

AU - Bulycheva, S. V.

AU - Galimov, A. T.

AU - Khomyak, D. N.

AU - Vasilyeva, A. N.

N1 - On the Age and Genesis of the Verkhnyaya Gora Strata of the Kurtak Region, Middle Yenisei / I. D. Zolnikov, A. V. Borodin, E. A. Markova [et al.] // Stratigraphy and Geological Correlation. – 2026. – Vol. 34, No. 5. – P. 505-526. – DOI 10.1134/S0869593826700140. – EDN PSFNXS. The study of the fauna of small mammals, spore-pollen analysis and paleoecological interpretation of the results were supported by the Russian Science Foundation, project no. 22-14-00332-P; the study of malacofauna was conducted within the framework of the state assignment of the Geological Institute of the Russian Academy of Sciences, the study of the remains of large mammals was carried out within the framework of the state assignment of the Institute of the Earth’s Crust of the Siberian Branch of the Russian Academy of Sciences no. 121042700218-2; the geological and geomorphological study was conducted under the state assignment of the Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences (FWZN-2026-0004) with the support of the Ministry of Education and Science of the Russian Federation.

PY - 2026/9/3

Y1 - 2026/9/3

N2 - Abstract: A study of the geology of the Verkhnyaya Gora strata in the Berezhekovo-5 section of the Kurtak geoarcheological region, based on numerous detailed outcrops, shows its deluvial-solifluctional genesis. The results of the analysis of the therio- and malacofaunas from the Verkhnyaya Gora strata suggest that the most probable age of host deposits, based on the summary of all available paleontological data, is early Neopleistocene. Most of the small mammal fauna from the Verkhnyaya Gora strata at the Berezhekovo-5 locality formed during the MQR 5 biochron (up to the boundary with the MQR 4 biochron) and corresponds to the level of late Vyatkino faunas of Western Siberia and late Tiraspol’ faunas of Eastern Europe. Ecological characteristics of the identified small mammal taxa allows the recognition of three biochronologically close but ecologically distinct faunal assemblages: steppe, forest-steppe, and periglacial. Considering the biochronological interpretation of the microtheriofauna, the presence of remains from multiple faunal assemblages in mixed state within the Verkhnyaya Gora strata can be explained by accumulation of paleontological material during the MQR 5 biochron against the background of changing landscape-climatic environments spanning Marine Isotope Stages (MIS) 16 to the onset of MIS 13. Thus, an early Quaternary age for the subaerial Verkhnyaya Gora strata in the stratotype Berezhekovo-5 section, Kurtak region, Yenisei River, is deemed substantiated for both the local stratigraphic scheme of the Minusinsk Basin and the regional stratigraphic scheme of the Altai-Sayan mountain region.

AB - Abstract: A study of the geology of the Verkhnyaya Gora strata in the Berezhekovo-5 section of the Kurtak geoarcheological region, based on numerous detailed outcrops, shows its deluvial-solifluctional genesis. The results of the analysis of the therio- and malacofaunas from the Verkhnyaya Gora strata suggest that the most probable age of host deposits, based on the summary of all available paleontological data, is early Neopleistocene. Most of the small mammal fauna from the Verkhnyaya Gora strata at the Berezhekovo-5 locality formed during the MQR 5 biochron (up to the boundary with the MQR 4 biochron) and corresponds to the level of late Vyatkino faunas of Western Siberia and late Tiraspol’ faunas of Eastern Europe. Ecological characteristics of the identified small mammal taxa allows the recognition of three biochronologically close but ecologically distinct faunal assemblages: steppe, forest-steppe, and periglacial. Considering the biochronological interpretation of the microtheriofauna, the presence of remains from multiple faunal assemblages in mixed state within the Verkhnyaya Gora strata can be explained by accumulation of paleontological material during the MQR 5 biochron against the background of changing landscape-climatic environments spanning Marine Isotope Stages (MIS) 16 to the onset of MIS 13. Thus, an early Quaternary age for the subaerial Verkhnyaya Gora strata in the stratotype Berezhekovo-5 section, Kurtak region, Yenisei River, is deemed substantiated for both the local stratigraphic scheme of the Minusinsk Basin and the regional stratigraphic scheme of the Altai-Sayan mountain region.

KW - MQR

KW - Minusinsk Basin

KW - biostratigraphy

KW - chronospecies

KW - lower Neopleistocene

KW - mollusks

KW - paleoecology

KW - small mammals

KW - мелкие млекопитающие

KW - МКР

KW - хроновиды

KW - моллюски

KW - нижний неоплейстоцен

KW - палеоэкология

KW - биостратиграфия

KW - Минусинский бассейн

UR - https://www.mendeley.com/catalogue/8226c7b2-26f3-379c-a53c-90b09ed7e08c/

UR - https://www.scopus.com/pages/publications/105049527969

UR - https://elibrary.ru/item.asp?id=91985009

U2 - 10.1134/S0869593826700140

DO - 10.1134/S0869593826700140

M3 - Article

VL - 34

SP - 505

EP - 526

JO - Stratigraphy and Geological Correlation

JF - Stratigraphy and Geological Correlation

SN - 0869-5938

IS - 5

ER -