- Tytuł:
- Aleksandrov quarry. Late Pleistocene-Holocene. Cover complex: soils, loesses, buried balka
- Autorzy:
- Sycheva, S.
- Powiązania:
- https://bibliotekanauki.pl/articles/1204970.pdf
- Data publikacji:
- 2004
- Wydawca:
- Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
- Tematy:
-
pogrzebane rynny (bałki)
cykl klimatyczny i erozyjny
paleogleba
less
Buried balka
climatic and erosional cycle
loess
palaeolandscape
Russian Plain - Opis:
- Erosion network formed during the Mikulino-Valdai (Eem-Würm) Interglacial, which is now buried under recent deposits, is the best object of Quaternary geology. One can see its exposures in the Aleksandrov quarry on the Central Russian Upland. The Mikulino-Valdai erosion network certainly needs to be protected as a natural monument. Buried Mikulino balkas (wide flat-bottomed gullies) are unique natural objects, which represent a complete erosion cycle from the surface dissection to its stabilisation, palaeosol formation, and surface levelling as a result of denudation of watersheds and infilling or burying of depressions. On the basis of profiles studied along and across Mikulino balkas, it is possible to trace gradual and catastrophic changes of palaeolandscapes and reconstruct the development stages of topographical forms and soils, associated with climate change within the interglacial-glacial cycle. Over the balka bottom, one can observe the Valdai soil - lithogenic series having no analogues with such a precise and complete stratigraphy within the whole Russian Plain. Besides Mikulino Interglacial palaeosol, there are four buried soils of Valdai interstadial period: Kukuevka, Streletskaya, Aleksandrovka, and Bryansk palaeosols (33,140 š230 BP, Ki-8211). Such a complete set of Late Pleistocene palaeosols is very rare on the East European Plain. In the studied profile we have also found fragments of bones of furred rhinoceros and a prehistoric horse (39,710 š580, Ki-9362).
- Źródło:
-
Polish Geological Institute Special Papers; 2004, 13; 175-181
1507-9791 - Pojawia się w:
- Polish Geological Institute Special Papers
- Dostawca treści:
- Biblioteka Nauki