Titre du document / Document title

The loess-palaeosol succession of Kurtak (Yenisei basin, Siberia) : A reference record for the Karga stage (mis 3)

Auteur(s) / Author(s)

HAESAERTS Paul ⁽¹⁾ ; CHEKHA Vitaly P. ⁽²⁾ ; DAMBLON Freddy ⁽¹⁾ ; DROZDOV Nicolai I. ⁽²⁾ ; ORLOVA Lyoba A. ⁽³⁾ ; VAN DER PLICHT Johannes ^{(4 5)} ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Royal Belgian Institute of Natural Sciences, Department of Palaeontology, Vautier str., 29, 1000 Brussels, BELGIQUE
⁽²⁾ Laboratory of Archaeology and Palaeogeography of Central Siberia, Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Academgorodok, 660036 Krasnoyarsk, RUSSIE, FEDERATION DE
⁽³⁾ United Institute of Geology, Geophysics and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Universitietsky pr. 3, 630090 Novosibirsk, RUSSIE, FEDERATION DE
⁽⁴⁾ Groningen University, Centre for Isotope Research, Nijenborgh 4, 9747 AG Groningen, PAYS-BAS
⁽⁵⁾ Leiden University, Faculty of Archaeology, P.O. Box 9515, 2300 RA Leiden, PAYS-BAS

Résumé / Abstract

The loess-palaeosol succession of Kurtak, along the western slope of the Yenisei Valley, is one of the best documented Late Pleistocene sequences in southern Central Siberia. The present paper deals with the Kurtak Pedocomplex and with the Chani Bay Complex preserved on the plateau and in a lateral depression respectively, which correspond to the Karga Stage (MIS 3). For this sequence we obtained a detailed palaeoclimatic succession based on pedological and palynological data recording 14 short interstadial periods. The chronology of this record is well established by ca 100 radiocarbon dates on charcoal and wood remains, ranging from 42,520 to 25,710 BP. Botanical analysis shows a steppe-like vegetation with small tree populations (spruce, pine, birch) in lateral valleys during the colder periods. During the interstadial episodes spruce populations grew denser in the valleys, while scattered spruce, larch and pine trees expanded on the plateau. Therefore, the Kurtak Pedocomplex and Chani Bay Complex provide a unique climatic record for MIS 3, similar to the middle pleniglacial succession of the Dinkel Valley in the Netherlands and to loess-palaeosol records of Eastern and Central Europe. This means that the Siberian record shows a climatic sequence of global significance, and that the environmental conditions during MIS 3 were highly unstable at the Eurasian continent.

Revue / Journal Title

Quaternaire   ISSN 1142-2904 

Source / Source

2005, vol. 16, n^o1, pp. 3-24 [22 page(s) (article)] (37 ref.)

Langue / Language

Anglais
Revue : Français

Editeur / Publisher

Association française pour l'étude du quaternaire, Paris, FRANCE  (1990) (Revue)

Mots-clés anglais / English Keywords

Pinaceae ; soils ; Plantae ; Spermatophyta ; gymnosperms ; Phanerozoic ; Cenozoic ; Quaternary ; Pleistocene ; Eurasia ; Russian Federation ; Asia ; Larix ; Picea ; luminescence ; dating ; C-14 ; paleoclimate ; Paleosols ; palynology ; Coniferales ; chronostratigraphy ; paleoenvironment ; pollen analysis ; biostratigraphy ; steppes ; charcoal ; depressions ; plateaus ; upper Pleistocene ; valleys ; loess ; Siberia ; Yenisei Basin ;

Mots-clés français / French Keywords

Pinaceae ; Sol ; Plantae ; Spermatophyta ; Gymnospermae ; Phanérozoïque ; Cénozoïque ; Quaternaire ; Pléistocène ; Eurasie ; Russie ; Asie ; Larix ; Picea ; Luminescence ; Datation ; C 14 ; Paléoclimat ; Paléosol ; Palynologie ; Coniferales ; Chronostratigraphie ; Paléoenvironnement ; Analyse pollinique ; Biostratigraphie ; Steppe ; Charbon bois ; Dépression ; Plateau ; Pléistocène sup ; Vallée ; Loess ; Sibérie ; Bassin Iénisséi ;

Mots-clés espagnols / Spanish Keywords

Suelo ; Spermatophyta ; Gymnospermae ; Fanerozoico ; Cenozoico ; Cuaternario ; Eurasia ; Rusia ; Asia ; Luminiscencia ; Fechado ; C 14 ; Paleoclima ; Paleosol ; Palinología ; Coniferales ; Cronoestratigrafía ; Paleoambiente ; Análisis polínico ; Bioestratigrafía ; Carbón madera ; Depresión ; Meseta ; Valle ; Loess ; Siberia ; Cuenca Ienisei ;

Mots-clés d'auteur / Author Keywords

Loess ; Central Siberia ; Karga Stage (MIS 3) ; climatic succession ; palynology ; radiocarbon chronology ;

Localisation / Location

INIST-CNRS, Cote INIST : 11408, 35400012488558.0010