Sedimentology at the continental margin of the southern Weddell Sea ...
During four expeditions with RV "Polarstern" at the continental margin of the southern Weddell Sea, profiling and geological sampling were carried out. A detailed bathymetric map was constructed from echo-sounding data. Sub-bottom profiles, classified into nine echotypes, have been mapped...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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PANGAEA
1991
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| Online Access: | https://dx.doi.org/10.1594/pangaea.729620 https://doi.pangaea.de/10.1594/PANGAEA.729620 |
| Summary: | During four expeditions with RV "Polarstern" at the continental margin of the southern Weddell Sea, profiling and geological sampling were carried out. A detailed bathymetric map was constructed from echo-sounding data. Sub-bottom profiles, classified into nine echotypes, have been mapped and interpreted. Sedimentological analyses were carried out on 32 undisturbed box grab surface samples, as well as on sediment cores from 9 sites. Apart from the description of the sediments and the investigation of sedimentary structures on X-radiographs the following characteristics were determined: grain-size distributions; carbonate and Corg content; component distibutions in different grain-size fractions; stable oxygen and carbon isotopes in planktic and, partly, in benthic foraminifers; and physical properties. The stratigraphy is based On 14C-dating, oxygen isotope Stages and, at one site, On paleomagnetic measurements and 230Th-analyses The sediments represent the period of deposition from the last glacial maximum ... : Supplement to: Melles, Martin (1991): Paläoglaziologie und Paläozeanographie im Spätquartär am Kontinentalrand des südlichen Weddellmeeres, Antarktis (Late Quaternary paleoglaciology and paleoceanography at the continental margin of the southern Weddell Sea, Antarctica). Berichte zur Polarforschung = Reports on Polar Research, 81, 190 pp ... |
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