PALYNOLOGICAL STUDIES OF LAKE AND LAKE-SWAMP SEDIMENTS OF THE HOLOCENE IN THE HIGH MOUNTAINS OF ARKHYZ (WESTERN CAUCASUS)
1996; De Gruyter Open; Volume: 36; Issue: 1 Linguagem: Inglês
ISSN
2082-0259
AutoresEliso Kvavadze, Yuri V. Efremov,
Tópico(s)Geology and Paleoclimatology Research
ResumoOn the basis of palynological studies of lake, lake-swamp and soil sediments located in the alpine and subnival belts of the northern part of the Western Caucasus (Arkhyz, Russia), the character of the evolution of vegetation, climate and lake levels during the last 5-6 millenia has been established. During the period 4300- 4200 BP the landscape of the Arkhyz high mountains underwent radical changes when, as a result of intense cooling, the alpine belts descended several hundred metres. The lakes that had existed on the site under investi gation throughout the Atlantic period began to disappear. Alpine meadows were replaced by the sparse vegeta tion of the subnival belt. The deterioration of the SB climate was rather prolonged and was interrupted by one significant warming. However, the SA coolings were marked by their short duration and greater frequency. The most important were the climatic deteriorations from 1300-1200 BP and 400-350 BP.
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