Calcareous nannofossils of ODP Hole 177-1090D ...
Calcareous nannofossil assemblages have been investigated at Ocean Drilling Program (ODP) Site 1090 located in the modern Subantarctic Zone, through the Pleistocene Marine Isotope Stages (MIS) 34-29, between 1150 and 1000 ka. A previously developed age model and new biostratigraphic constraints prov...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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PANGAEA
2009
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.773857 https://doi.pangaea.de/10.1594/PANGAEA.773857 |
| Summary: | Calcareous nannofossil assemblages have been investigated at Ocean Drilling Program (ODP) Site 1090 located in the modern Subantarctic Zone, through the Pleistocene Marine Isotope Stages (MIS) 34-29, between 1150 and 1000 ka. A previously developed age model and new biostratigraphic constraints provide a reliable chronological framework for the studied section and allow correlation with other records. Two relevant biostratigraphic events have been identified: the First Common Occurrence of Reticulofenestra asanoi, distinctly correlated to MIS 31-32; the re-entry of medium Gephyrocapsa at MIS 29, unexpectedly similar to what was observed at low latitude sites.The composition of the calcareous nannofossil assemblage permits identification of three intervals (I-III). Intervals I and III, correlated to MIS 34-32 and MIS 30-29 respectively, are identified as characteristic of water masses located south of the Subtropical Front and reflecting the southern border of Subantarctic Zone, at the transition with the ... : Supplement to: Maiorano, Patrizia; Marino, Maria; Flores, José-Abel (2009): The warm interglacial Marine Isotope Stage 31: Evidences from the calcareous nannofossil assemblages at Site 1090 (Southern Ocean). Marine Micropaleontology, 71(3-4), 166-175 ... |
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