Sediment core studies at the Campeche cold-water coral province, southern Gulf of Mexico
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2017
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| _version_ | 1867171371992219648 |
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| author | Matos, Lelia Wienberg, Claudia Titschack, Jürgen Schmiedl, Gerhard Frank, Norbert Abrantes, Fatima F Cunha, Marina Ribeiro Hebbeln, Dierk |
| author_facet | Matos, Lelia Wienberg, Claudia Titschack, Jürgen Schmiedl, Gerhard Frank, Norbert Abrantes, Fatima F Cunha, Marina Ribeiro Hebbeln, Dierk |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Coral mounds formed by framework-forming scleractinian cold-water corals (CWC; mainly Lophelia pertusa) are a common seabed feature along the Atlantic continental margins. While coral mound areas in the NE Atlantic reveal a climate-dependent temporal pattern of CWC occurrence and mound aggradation that is related to distinct environmental conditions (e.g., productivity, water mass properties, hydrodynamics), the long-term development of CWC and coral mounds at the western side of the Atlantic is less well documented and understood. Here, we present a 260-kyr coral record from the recently described Campeche CWC province in the southern Gulf of Mexico, combined with a reconstruction of the paleo-environmental conditions for the last 140 kyr. Uranium-series dating of 26 coral samples reveals that CWC growth predominantly coincided with interglacial periods. Highest vertical mound aggradation rates of 34 to 40 cm kyr^-1 occurred during the Holocene. The reduced occurrence of CWC and the concurrent almost complete stagnation in mound aggradation during glacial periods could be linked to a diminished presence of Antarctic Intermediate Water at those intermediate depths in which the coral mounds occur. Such setting would have caused a less dynamic bottom current regime resulting in a reduced food supply to the CWC along the Campeche Bank. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_884833 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sediment core studies at the Campeche cold-water coral province, southern Gulf of Mexico Matos, Lelia Wienberg, Claudia Titschack, Jürgen Schmiedl, Gerhard Frank, Norbert Abrantes, Fatima F Cunha, Marina Ribeiro Hebbeln, Dierk Center for Marine Environmental Sciences; MARUM Coral mounds formed by framework-forming scleractinian cold-water corals (CWC; mainly Lophelia pertusa) are a common seabed feature along the Atlantic continental margins. While coral mound areas in the NE Atlantic reveal a climate-dependent temporal pattern of CWC occurrence and mound aggradation that is related to distinct environmental conditions (e.g., productivity, water mass properties, hydrodynamics), the long-term development of CWC and coral mounds at the western side of the Atlantic is less well documented and understood. Here, we present a 260-kyr coral record from the recently described Campeche CWC province in the southern Gulf of Mexico, combined with a reconstruction of the paleo-environmental conditions for the last 140 kyr. Uranium-series dating of 26 coral samples reveals that CWC growth predominantly coincided with interglacial periods. Highest vertical mound aggradation rates of 34 to 40 cm kyr^-1 occurred during the Holocene. The reduced occurrence of CWC and the concurrent almost complete stagnation in mound aggradation during glacial periods could be linked to a diminished presence of Antarctic Intermediate Water at those intermediate depths in which the coral mounds occur. Such setting would have caused a less dynamic bottom current regime resulting in a reduced food supply to the CWC along the Campeche Bank. |
| title | Sediment core studies at the Campeche cold-water coral province, southern Gulf of Mexico |
| topic | Center for Marine Environmental Sciences; MARUM |
| url | https://doi.org/10.1594/PANGAEA.884833 |