Composition of bottom sediments from Core SO201-2-101, Shirshov Ridge, Bering Sea
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| Autores principales: | , , , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2013
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| _version_ | 1867167670626942976 |
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| author | Levitan, Mikhail A Kuzmina, Tatyana G Luksha, V L Roshchina, I A Syromyatnikov, KV Max, Lars Nürnberg, Dirk Riethdorf, Jan-Rainer Tiedemann, Ralf |
| author_facet | Levitan, Mikhail A Kuzmina, Tatyana G Luksha, V L Roshchina, I A Syromyatnikov, KV Max, Lars Nürnberg, Dirk Riethdorf, Jan-Rainer Tiedemann, Ralf |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Analysis of lithology, grain-size composition, clay minerals, and geochemistry of Upper Pleistocene bottom sediments from the submarine Shirshov Ridge (Bering Sea) showed that the Yukon-Tanana terrane of the Central Alaska was main source area of the sediments. Sedimentary material was transported by the Yukon River through Beringia up to the shelf break, where they were entrained by a strong north-west sea current. Lithological data revealed several pulses of ice-rafted debris deposition roughly synchronous with Heinrich events and periods of weaker bottom current intensity. Based on geochemical results we distinguished intervals of an increase in paleoproductivity and extension of the oxygen minimum zone. Our results suggest that there were three stages of deposition driven by glacioeustatic sea-level fluctuations and glacial cycles in Alaska. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_816985 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Composition of bottom sediments from Core SO201-2-101, Shirshov Ridge, Bering Sea Levitan, Mikhail A Kuzmina, Tatyana G Luksha, V L Roshchina, I A Syromyatnikov, KV Max, Lars Nürnberg, Dirk Riethdorf, Jan-Rainer Tiedemann, Ralf Archive of Ocean Data; ARCOD Analysis of lithology, grain-size composition, clay minerals, and geochemistry of Upper Pleistocene bottom sediments from the submarine Shirshov Ridge (Bering Sea) showed that the Yukon-Tanana terrane of the Central Alaska was main source area of the sediments. Sedimentary material was transported by the Yukon River through Beringia up to the shelf break, where they were entrained by a strong north-west sea current. Lithological data revealed several pulses of ice-rafted debris deposition roughly synchronous with Heinrich events and periods of weaker bottom current intensity. Based on geochemical results we distinguished intervals of an increase in paleoproductivity and extension of the oxygen minimum zone. Our results suggest that there were three stages of deposition driven by glacioeustatic sea-level fluctuations and glacial cycles in Alaska. |
| title | Composition of bottom sediments from Core SO201-2-101, Shirshov Ridge, Bering Sea |
| topic | Archive of Ocean Data; ARCOD |
| url | https://doi.org/10.1594/PANGAEA.816985 |