Age determination and stable isotope ratios of three sediment cores from the Great Belt
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| Autores principales: | , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1998
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| _version_ | 1867170454190424064 |
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| author | Winn, Kyaw Erlenkeuser, Helmut Nordberg, Kjell Gustafsson, Mikael |
| author_facet | Winn, Kyaw Erlenkeuser, Helmut Nordberg, Kjell Gustafsson, Mikael |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The marine transgression Into the Baltic Sea through the Great Belt took place around 9,370 calibrated C-14-years B.P. The sedimentary sequence from the early brackish phase and the change to marine conditions has been investigated in detail through C-14-datings, and oxygen and carbon isotope measurements, and is interpreted by comparison with modern analogs. The oldest brackish sediments are the strongly laminated clays and silts rich in organic carbon followed by non-laminated heavily bioturbated silts. The bedding and textural characteristics and stable isotope analyses on Ammonia beccarii (dextral) and A. beccarii (sinistral) show that the deposltlonal conditions respond to a change at about 9,100 cal. a B.P. from an unstratified brackish water environment in the initial stage of the Littorina Transgression to a thermohaline layered milieu in the upper unit. The oxygen isotope results indicate that the bottom waters of this latter period had salinities and temperatures comparable to the present day Kiel Bay waters. The isotopic composition of the total organic carbon and the d13C-values of A. beccarii reveal a gradual change from an initially lacustrine/terrestrial provenance toward a brackish/marine dominated depositional environment. A stagnation of the sea level at around 9,100 to 9,400 B.P. is indicated. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_695505 |
| institution | PANGAEA |
| language | en |
| publishDate | 1998 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination and stable isotope ratios of three sediment cores from the Great Belt Winn, Kyaw Erlenkeuser, Helmut Nordberg, Kjell Gustafsson, Mikael BC; Box corer; GIK12522-2; GIK12523-1; GIK12594-2; GIK-cruise; Gravity corer (Kiel type); Great Belt, western Baltic Sea, off Denmark; Großer Belt, Nord-Langelandbelt; SL The marine transgression Into the Baltic Sea through the Great Belt took place around 9,370 calibrated C-14-years B.P. The sedimentary sequence from the early brackish phase and the change to marine conditions has been investigated in detail through C-14-datings, and oxygen and carbon isotope measurements, and is interpreted by comparison with modern analogs. The oldest brackish sediments are the strongly laminated clays and silts rich in organic carbon followed by non-laminated heavily bioturbated silts. The bedding and textural characteristics and stable isotope analyses on Ammonia beccarii (dextral) and A. beccarii (sinistral) show that the deposltlonal conditions respond to a change at about 9,100 cal. a B.P. from an unstratified brackish water environment in the initial stage of the Littorina Transgression to a thermohaline layered milieu in the upper unit. The oxygen isotope results indicate that the bottom waters of this latter period had salinities and temperatures comparable to the present day Kiel Bay waters. The isotopic composition of the total organic carbon and the d13C-values of A. beccarii reveal a gradual change from an initially lacustrine/terrestrial provenance toward a brackish/marine dominated depositional environment. A stagnation of the sea level at around 9,100 to 9,400 B.P. is indicated. |
| title | Age determination and stable isotope ratios of three sediment cores from the Great Belt |
| topic | BC; Box corer; GIK12522-2; GIK12523-1; GIK12594-2; GIK-cruise; Gravity corer (Kiel type); Great Belt, western Baltic Sea, off Denmark; Großer Belt, Nord-Langelandbelt; SL |
| url | https://doi.org/10.1594/PANGAEA.695505 |