(Table 1) Oxygen and carbon isotopes and calcium carbonte of bulk carbonate at DSDP Hole 72-516F
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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1983
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| _version_ | 1867171815838711808 |
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| author | Williams, Douglas F Healy-Williams, Nancy Thunell, Robert C Leventer, Amy |
| author_facet | Williams, Douglas F Healy-Williams, Nancy Thunell, Robert C Leventer, Amy |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A detailed oxygen and carbon isotope study of the upper Maestrichtian-lower Paleocene section of Hole 516F from the Rio Grande Rise reveals that large isotopic anomalies are clearly associated with the Cretaceous/Tertiary boundary. Across the Cretaceous/Tertiary boundary, the total carbonate content reaches a maximum exceeding 80% before rapidly decreasing in covariance with the carbon isotope record. This strong covariance between d13C and percent CaCO3 suggests either a significant reduction in primary productivity or a rapid shoaling of the calcium carbonate compensation depth. Importantly, the d13C record 2 Ma after the Cretaceous/Tertiary boundary remained depleted in 13C by at least 0.5 per mil compared to the late Maestrichtian. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_812508 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Oxygen and carbon isotopes and calcium carbonte of bulk carbonate at DSDP Hole 72-516F Williams, Douglas F Healy-Williams, Nancy Thunell, Robert C Leventer, Amy 72-516F; Calcium carbonate; Calcium carbonate, standard deviation; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg72; Replicates; Sample code/label; see reference(s); South Atlantic/CONT RISE; δ13C, bulk carbonate; δ13C, standard deviation; δ18O, bulk carbonate; δ18O, standard deviation A detailed oxygen and carbon isotope study of the upper Maestrichtian-lower Paleocene section of Hole 516F from the Rio Grande Rise reveals that large isotopic anomalies are clearly associated with the Cretaceous/Tertiary boundary. Across the Cretaceous/Tertiary boundary, the total carbonate content reaches a maximum exceeding 80% before rapidly decreasing in covariance with the carbon isotope record. This strong covariance between d13C and percent CaCO3 suggests either a significant reduction in primary productivity or a rapid shoaling of the calcium carbonate compensation depth. Importantly, the d13C record 2 Ma after the Cretaceous/Tertiary boundary remained depleted in 13C by at least 0.5 per mil compared to the late Maestrichtian. |
| title | (Table 1) Oxygen and carbon isotopes and calcium carbonte of bulk carbonate at DSDP Hole 72-516F |
| topic | 72-516F; Calcium carbonate; Calcium carbonate, standard deviation; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg72; Replicates; Sample code/label; see reference(s); South Atlantic/CONT RISE; δ13C, bulk carbonate; δ13C, standard deviation; δ18O, bulk carbonate; δ18O, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.812508 |