Biostratigraphic evidences of extreme floods in the Holocene: the south-east of the Taymyr Peninsula, Russia
| Autor: | Valentina V. Ukraintseva, Igor N. Pospelov |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Floodplain Lithology Geography Planning and Development Biostratigraphy Before Present medicine.disease_cause Peninsula Pollen medicine Period (geology) General Earth and Planetary Sciences Physical geography General Agricultural and Biological Sciences Geology Holocene |
| Zdroj: | Polar Geography. 33:87-99 |
| ISSN: | 1939-0513 1088-937X |
| DOI: | 10.1080/1088937x.2010.541676 |
| Popis: | Having conducted research in the basins of the Kotuy and Medvezh'ya Rivers, the phenomenon of palaeofloods in the south-eastern part of the Taymyr Peninsula has been identified for the first time. Beginning with the sub-boreal period of the Holocene, approximately 3900 years Before Present (BP), high waters and floods have been a constant occurrence in this region. The evidences thereof are as follows: (1) an absence of plant pollen and spores in the whole 10-meter formation of sediments in the second terrace above the flood plain of the Medvezh'ya River; (2) an absence of plant pollen and spores in the surface samples taken in a larch forest with upland soil near the geological cross-section that was investigated; (3) lithology and biostratigraphy of the investigated geological cross-section; and (4) contemporary hydrological activities and processes in the Kotuy–Medvezh'ya Rivers system. |
| Databáze: | OpenAIRE |
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