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| Main Authors: | , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2003
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.841682 |
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| _version_ | 1867169511862435840 |
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| author | Faul, Kristina L Anderson, Linda Davis Delaney, Margaret Lois |
| author_facet | Faul, Kristina L Anderson, Linda Davis Delaney, Margaret Lois |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We evaluate phosphorus (P) and biogenic barium (bio-Ba) as nutrient burial and export productivity indicators for the Late Cretaceous and early Paleogene, combining these with calcium carbonate (CaCO3), organic carbon (C), and bulk CaCO3 C isotopes (d13C). Sample ages span 36-71 Ma (~1 sample/0.5 m.y.) for a depth transect of sites in the western North Atlantic (Blake Nose, Ocean Drilling Program Leg 171B, Sites 1052, 1051, and 1050). We use a multitracer approach including redox conditions to investigate export productivity surrounding the global Paleocene d13C maximum (~57 Ma). Reducing conditions render most of the bio-Ba record not useful for export productivity interpretations. P and organic C records indicate that regional nutrient and organic C burial were high at ~61 and ~69 Ma, and low during the Paleocene d13C maximum, a time of proposed global high relative organic C burial. Observed organic C burial changes at Blake Nose cannot explain this C isotope excursion. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_841682 |
| institution | PANGAEA |
| language | en |
| publishDate | 2003 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Öate Cretaceous to early Paleogene nutrient and paleoproductivity records of ODP Leg 171 sites Faul, Kristina L Anderson, Linda Davis Delaney, Margaret Lois Ocean Drilling Program; ODP We evaluate phosphorus (P) and biogenic barium (bio-Ba) as nutrient burial and export productivity indicators for the Late Cretaceous and early Paleogene, combining these with calcium carbonate (CaCO3), organic carbon (C), and bulk CaCO3 C isotopes (d13C). Sample ages span 36-71 Ma (~1 sample/0.5 m.y.) for a depth transect of sites in the western North Atlantic (Blake Nose, Ocean Drilling Program Leg 171B, Sites 1052, 1051, and 1050). We use a multitracer approach including redox conditions to investigate export productivity surrounding the global Paleocene d13C maximum (~57 Ma). Reducing conditions render most of the bio-Ba record not useful for export productivity interpretations. P and organic C records indicate that regional nutrient and organic C burial were high at ~61 and ~69 Ma, and low during the Paleocene d13C maximum, a time of proposed global high relative organic C burial. Observed organic C burial changes at Blake Nose cannot explain this C isotope excursion. |
| title | Öate Cretaceous to early Paleogene nutrient and paleoproductivity records of ODP Leg 171 sites |
| topic | Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.841682 |