Palaeo-environments at the Batagay site in West Beringia during the late Quaternary ...
Permafrost deposits, which underlie vast areas of Asia, provide valuable information for reconstructing past ecological events. The syngenetic permafrost deposits of the Batagay outcrop preserve valuable data about the palaeo-environment of the Yana Highlands of inland Beringia. The former subcontin...
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| Format: | Text |
| Language: | English |
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Friedrich-Schiller-Universität Jena
2018
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| Online Access: | https://dx.doi.org/10.22032/dbt.38013 https://www.db-thueringen.de/receive/dbt_mods_00038013 |
| Summary: | Permafrost deposits, which underlie vast areas of Asia, provide valuable information for reconstructing past ecological events. The syngenetic permafrost deposits of the Batagay outcrop preserve valuable data about the palaeo-environment of the Yana Highlands of inland Beringia. The former subcontinent of Beringia connected Eurasia and America during low sea-level stands and hosted a now extinct biomethe mammothsteppe. To unravel the environmental history of West Beringia, the Batagay permafrost sequence was investigated. The first part of the thesis reports the first sedimentological results and provides a stratigraphical and temporal framework of the sequence. The stratigraphy comprises five units, including two ice complexes, two sand units and one woody layer. OSL and AMS dating suggest that the sequence started to accumulate during the late Middle Pleistocene and extends through the Late Pleistocene, with interruptions and erosional events. The second part of the thesis presents the palaeo-environmental ... |
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