Cretaceous stable isotopic record and sea surface temperture estimation for ODP Site 207-1259
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2008
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| _version_ | 1867168558828486656 |
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| author | Bornemann, André Norris, Richard D Friedrich, Oliver Beckmann, Britta Schouten, Stefan Sinninghe Damsté, Jaap S Vogel, Jennifer Hofmann, Peter Wagner, Thomas |
| author_facet | Bornemann, André Norris, Richard D Friedrich, Oliver Beckmann, Britta Schouten, Stefan Sinninghe Damsté, Jaap S Vogel, Jennifer Hofmann, Peter Wagner, Thomas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Turonian (93.5 to 89.3 million years ago) was one of the warmest periods of the Phanerozoic eon, with tropical sea surface temperatures over 35°C. High-amplitude sea-level changes and positive d18O excursions in marine limestones suggest that glaciation events may have punctuated this episode of extreme warmth. New d18O data from the tropical Atlantic show synchronous shifts ~91.2 million years ago for both the surface and deep ocean that are consistent with an approximately 200,000-year period of glaciation, with ice sheets of about half the size of the modern Antarctic ice cap. Even the prevailing supergreenhouse climate was not a barrier to the formation of large ice sheets, calling into question the common assumption that the poles were always ice-free during past periods of intense global warming. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_771889 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Cretaceous stable isotopic record and sea surface temperture estimation for ODP Site 207-1259 Bornemann, André Norris, Richard D Friedrich, Oliver Beckmann, Britta Schouten, Stefan Sinninghe Damsté, Jaap S Vogel, Jennifer Hofmann, Peter Wagner, Thomas 207-1259; COMPCORE; Composite Core; Joides Resolution; Leg207; North Atlantic Ocean; Ocean Drilling Program; ODP The Turonian (93.5 to 89.3 million years ago) was one of the warmest periods of the Phanerozoic eon, with tropical sea surface temperatures over 35°C. High-amplitude sea-level changes and positive d18O excursions in marine limestones suggest that glaciation events may have punctuated this episode of extreme warmth. New d18O data from the tropical Atlantic show synchronous shifts ~91.2 million years ago for both the surface and deep ocean that are consistent with an approximately 200,000-year period of glaciation, with ice sheets of about half the size of the modern Antarctic ice cap. Even the prevailing supergreenhouse climate was not a barrier to the formation of large ice sheets, calling into question the common assumption that the poles were always ice-free during past periods of intense global warming. |
| title | Cretaceous stable isotopic record and sea surface temperture estimation for ODP Site 207-1259 |
| topic | 207-1259; COMPCORE; Composite Core; Joides Resolution; Leg207; North Atlantic Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.771889 |