High resolution stable isotope and Mg/Ca record of sediment core MD02-2550C2
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2006
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| _version_ | 1867170467510484992 |
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| author | LoDico, Jenna M Flower, Benjamin P Quinn, Terrence Michael |
| author_facet | LoDico, Jenna M Flower, Benjamin P Quinn, Terrence Michael |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | An early Holocene record from the Gulf of Mexico (GOM) reveals climatic and hydrologic changes during the interval from 10.5 to 7 thousand calendar years before present from paired analyses of Mg/Ca and d18O on foraminiferal calcite. The sea surface temperature record based on foraminiferal Mg/Ca contains six oscillations and an overall ~1.5°C warming that appears to be similar to the September-March insolation difference. The d18O of seawater in the GOM (d18OGOM) record contains six oscillations, including a -0.8 per mil excursion that may be associated with the "8.2 ka climate event" or a broader climate anomaly. Faunal census records from three GOM cores exhibit similar changes, suggesting subcentennial-scale variability in the incursions of Caribbean waters into the GOM. Overall, our results provide evidence that the subtropics were characterized by decadal- to centennial-scale climatic and hydrologic variability during the early Holocene. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_833786 |
| institution | PANGAEA |
| language | en |
| publishDate | 2006 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | High resolution stable isotope and Mg/Ca record of sediment core MD02-2550C2 LoDico, Jenna M Flower, Benjamin P Quinn, Terrence Michael Calypso Square Core System; CASQS; IMAGES IX - PAGE; Marion Dufresne (1995); MD022550C2; MD02-2550C2; MD127; Orca Basin An early Holocene record from the Gulf of Mexico (GOM) reveals climatic and hydrologic changes during the interval from 10.5 to 7 thousand calendar years before present from paired analyses of Mg/Ca and d18O on foraminiferal calcite. The sea surface temperature record based on foraminiferal Mg/Ca contains six oscillations and an overall ~1.5°C warming that appears to be similar to the September-March insolation difference. The d18O of seawater in the GOM (d18OGOM) record contains six oscillations, including a -0.8 per mil excursion that may be associated with the "8.2 ka climate event" or a broader climate anomaly. Faunal census records from three GOM cores exhibit similar changes, suggesting subcentennial-scale variability in the incursions of Caribbean waters into the GOM. Overall, our results provide evidence that the subtropics were characterized by decadal- to centennial-scale climatic and hydrologic variability during the early Holocene. |
| title | High resolution stable isotope and Mg/Ca record of sediment core MD02-2550C2 |
| topic | Calypso Square Core System; CASQS; IMAGES IX - PAGE; Marion Dufresne (1995); MD022550C2; MD02-2550C2; MD127; Orca Basin |
| url | https://doi.org/10.1594/PANGAEA.833786 |