Late Maastrichtian-early Paleocene benthic stable carbon and oxygen isotope records from ODP Site 208-1262, South Atlantic
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2017
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| _version_ | 1867171850858004480 |
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| author | Barnet, James S K Littler, Kate Kroon, Dick Leng, Melanie J Westerhold, Thomas Röhl, Ursula Zachos, James C |
| author_facet | Barnet, James S K Littler, Kate Kroon, Dick Leng, Melanie J Westerhold, Thomas Röhl, Ursula Zachos, James C |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The late Maastrichtian warming event was defined by a global temperature increase of about 2.5-5°C, which occurred ~150-300 kyr before the K/Pg (Cretaceous/Paleogene) mass extinction. This transient warming event has traditionally been associated with a major pulse of Deccan Trap volcanism, however large uncertainties on radiogenic dating methods have long hampered a definitive correlation. Here we present a high-resolution, single-species benthic stable isotope record from the South Atlantic, calibrated to a new high resolution orbitally-tuned age model, to provide a revised chronology of the event, which we then correlate to the latest radiogenic dates of the main Deccan Trap eruption phases. The onset of deep-sea warming is synchronous with a 405-kyr eccentricity minimum, excluding a control by orbital forcing alone, although amplified carbon cycle sensitivity to orbital precession is evident during the greenhouse warming. Our data reveals that the initiation of deep-sea warming coincides, within uncertainty, with the onset of the main phase of Deccan volcanism, strongly suggesting a causal link. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_881019 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Late Maastrichtian-early Paleocene benthic stable carbon and oxygen isotope records from ODP Site 208-1262, South Atlantic Barnet, James S K Littler, Kate Kroon, Dick Leng, Melanie J Westerhold, Thomas Röhl, Ursula Zachos, James C 208-1262; AGE; Bottom water temperature; COMPCORE; Composite Core; Depth, composite; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Joides Resolution; Leg208; Ocean Drilling Program; ODP; Sample code/label; Walvis Ridge, Southeast Atlantic Ocean; δ18O, adjusted/corrected The late Maastrichtian warming event was defined by a global temperature increase of about 2.5-5°C, which occurred ~150-300 kyr before the K/Pg (Cretaceous/Paleogene) mass extinction. This transient warming event has traditionally been associated with a major pulse of Deccan Trap volcanism, however large uncertainties on radiogenic dating methods have long hampered a definitive correlation. Here we present a high-resolution, single-species benthic stable isotope record from the South Atlantic, calibrated to a new high resolution orbitally-tuned age model, to provide a revised chronology of the event, which we then correlate to the latest radiogenic dates of the main Deccan Trap eruption phases. The onset of deep-sea warming is synchronous with a 405-kyr eccentricity minimum, excluding a control by orbital forcing alone, although amplified carbon cycle sensitivity to orbital precession is evident during the greenhouse warming. Our data reveals that the initiation of deep-sea warming coincides, within uncertainty, with the onset of the main phase of Deccan volcanism, strongly suggesting a causal link. |
| title | Late Maastrichtian-early Paleocene benthic stable carbon and oxygen isotope records from ODP Site 208-1262, South Atlantic |
| topic | 208-1262; AGE; Bottom water temperature; COMPCORE; Composite Core; Depth, composite; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Joides Resolution; Leg208; Ocean Drilling Program; ODP; Sample code/label; Walvis Ridge, Southeast Atlantic Ocean; δ18O, adjusted/corrected |
| url | https://doi.org/10.1594/PANGAEA.881019 |