Paleosols of kurgans of the Early Iron Age in the Transural steppe zone

Плеханова, Л. Н.; Демкин, В. А.

doi:10.1134/s1064229308010018

Cited by 8 publications

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“…The chronology of climatic events established by us on the basis of the paleosol data on the dry steppes and semi deserts in the Lower Volga region generally agrees with findings in other steppe and desert regions of Eurasia. In particular, micropluvial stages in the 1st-2nd and/or 3rd-4th centuries AD were established on the basis of paleographic and pedoarchaeological studies for the Near East [29], the Azov Sea Region [24], the southern Cis Ural region [26], and the Trans Ural region [25]. The increase in aridity of the climate in the 2nd-3rd centuries AD was found for the Aral Sea basin [5,22].…”

Section: Discussionmentioning

confidence: 99%

Dynamics of the properties of steppe paleosols of the Sarmatian time (2nd century BC-4th century AD) in relation to secular variations in climatic humidity

et al. 2012

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Paleosols buried under kurgans of the Early (2nd-1st centuries BC), Middle (1st-2nd centuries AD) and Late (2nd-IV centuries AD) Sarmatian epochs were studied in dry steppes and desert steppes of the Lower Volga region (the Privolzhskaya and Ergeni Uplands and the Caspian Lowland). It was found that tem poral variations in the morphological, chemical, microbiological, and magnetic properties of the paleosols in the interval of 2200-1600 BP were characterized by the cyclic pattern related to secular dynamics of climatic humidity with changes in the mean annual precipitation of ±30-50 mm. These climate changes did not transform chestnut paleosols and paleosolonetzes at the type or subtype taxonomic levels. However, they led to certain changes in the humus, carbonate, and salt profiles of the soils; in the character of solonetzic horizon B1; and in the state of microbial communities. According to these data, the Sarmatian time was characterized by alternation of micropluvial and microarid stages lasting fro about 100-200 years. In particular, the stages of humidization were observed in the 1st century BC-1st century AD and in the 4th century AD; the most arid conditions were observed in the second half of the 2nd and the first half of the 3rd century AD.

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Section: Discussionmentioning

confidence: 99%

Dynamics of the properties of steppe paleosols of the Sarmatian time (2nd century BC-4th century AD) in relation to secular variations in climatic humidity

et al. 2012

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Paleocryogenic traces of climatic peaks of the Late Pleistocene periglacial hyperzone of the mammoth steppe in soils of archaeological sites

Плеханова

Tupakhina

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Recording and accurate dating of paleo-cryogenic processes traces in modern ecosystems can act as a key for understanding the current state and interpreting the history of landscape development. The stage of the existence of glaciers and the accompanying periglacial zone of the tundra-steppes is the milestone in general history of the Russian large areas. The paleo-cryogenic structures in the modern soil cover are the inheritance of this stage. The recording of said structures at deep levels is possible during archaeological excavations. The stratigraphy of the layers of archaeological sites provides a possibility to link paleo-cryostructures’ traces to certain periods of time and archaeologically date the enclosing context. Preservation of the more complete paleosol record relative to past periods of landscape formation is typical for modern natural zones formed under the affection of limiting factors. These zones include steppe (lack of moisture and excess heat) or tundra (excess of moisture and lack of heat). We recorded the third-order soil polygons preserved on sandy loams of the steppe area in the Orenburg region under the earthfill bunds of the Early Iron Age dwelling. We also recorded the third-order soil polygons under the embankment of a Neolithic-Bronze dwelling on sandy loam soils located in the modern northern taiga zone. In both cases the dimensions of the polygons were about 2-3 meters, and their shape was regular or broken hexagons, resulted from the surface slope or terrain roughness. Moreover, we draw parallels in the history of systems formation, and outlined tasks for further research.

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