(Table 1) Elemental mean values of the upper Paleocene and lower Eocene in IODP Hole 302-M0004A
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2008
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| author | Sluijs, Appy Röhl, Ursula Schouten, Stefan Brumsack, Hans-Jürgen Sangiorgi, Francesca Sinninghe Damsté, Jaap S Brinkhuis, Henk |
| author_facet | Sluijs, Appy Röhl, Ursula Schouten, Stefan Brumsack, Hans-Jürgen Sangiorgi, Francesca Sinninghe Damsté, Jaap S Brinkhuis, Henk |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We reconstruct the latest Paleocene and early Eocene (~57-50 Ma) environmental trends in the Arctic Ocean and focus on the Paleocene-Eocene thermal maximum (PETM) (~55 Ma), using strata recovered from the Lomonosov Ridge by the Integrated Ocean Drilling Program Expedition 302. The Lomonosov Ridge was still partially subaerial during the latest Paleocene and earliest Eocene and gradually subsided during the early Eocene. Organic dinoflagellate cyst (dinocyst) assemblages point to brackish and productive surface waters throughout the latest Paleocene and early Eocene. Dinocyst assemblages are cosmopolitan during this time interval, suggesting warm conditions, which is corroborated by TEX86'-reconstructed temperatures of 15°-18°C. Inorganic geochemistry generally reflects reducing conditions within the sediment and euxinic conditions during the upper lower Eocene. Spectral analysis reveals that the cyclicity, recorded in X-ray fluorescence scanning Fe data from close to Eocene thermal maximum 2 (~53 Ma, presence confirmed by dinocyst stratigraphy), is related to precession. Within the lower part of the PETM, proxy records indicate enhanced weathering, runoff, anoxia, and productivity along with sea level rise. On the basis of total organic carbon content and variations in sediment accumulation rates, excess organic carbon burial in the Arctic Ocean appears to have contributed significantly to the sequestration of injected carbon during the PETM. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_733796 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Elemental mean values of the upper Paleocene and lower Eocene in IODP Hole 302-M0004A Sluijs, Appy Röhl, Ursula Schouten, Stefan Brumsack, Hans-Jürgen Sangiorgi, Francesca Sinninghe Damsté, Jaap S Brinkhuis, Henk 302-M0004A; ACEX-M4A; Aluminium; Arctic Coring Expedition, ACEX; Arctic Ocean; Arsenic/Aluminium ratio; Calcium/Aluminium ratio; Calculated; Carbon, organic, total; CCGS Captain Molly Kool (Vidar Viking); Cobalt/Aluminium ratio; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DSDP/ODP/IODP sample designation; Exp302; Infrared spectroscopy; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Iron/Aluminium ratio; Iron/Sulfur ratio; Magnesium/Aluminium ratio; Manganese/Aluminium ratio; Molybdenum/Aluminium ratio; Number of observations; Phosphorus/Aluminium ratio; Potassium/Aluminium ratio; Sample code/label; Sample code/label 2; Silicon/Aluminium ratio; Sulfur, total; Titanium/Aluminium ratio; Uranium/Aluminium ratio; Vanadium/Aluminium ratio; X-ray fluorescence core scanner (XRF) II, Bremen, (AVAATECH); Zinc/Aluminium ratio; Zirconium/Aluminium ratio We reconstruct the latest Paleocene and early Eocene (~57-50 Ma) environmental trends in the Arctic Ocean and focus on the Paleocene-Eocene thermal maximum (PETM) (~55 Ma), using strata recovered from the Lomonosov Ridge by the Integrated Ocean Drilling Program Expedition 302. The Lomonosov Ridge was still partially subaerial during the latest Paleocene and earliest Eocene and gradually subsided during the early Eocene. Organic dinoflagellate cyst (dinocyst) assemblages point to brackish and productive surface waters throughout the latest Paleocene and early Eocene. Dinocyst assemblages are cosmopolitan during this time interval, suggesting warm conditions, which is corroborated by TEX86'-reconstructed temperatures of 15°-18°C. Inorganic geochemistry generally reflects reducing conditions within the sediment and euxinic conditions during the upper lower Eocene. Spectral analysis reveals that the cyclicity, recorded in X-ray fluorescence scanning Fe data from close to Eocene thermal maximum 2 (~53 Ma, presence confirmed by dinocyst stratigraphy), is related to precession. Within the lower part of the PETM, proxy records indicate enhanced weathering, runoff, anoxia, and productivity along with sea level rise. On the basis of total organic carbon content and variations in sediment accumulation rates, excess organic carbon burial in the Arctic Ocean appears to have contributed significantly to the sequestration of injected carbon during the PETM. |
| title | (Table 1) Elemental mean values of the upper Paleocene and lower Eocene in IODP Hole 302-M0004A |
| topic | 302-M0004A; ACEX-M4A; Aluminium; Arctic Coring Expedition, ACEX; Arctic Ocean; Arsenic/Aluminium ratio; Calcium/Aluminium ratio; Calculated; Carbon, organic, total; CCGS Captain Molly Kool (Vidar Viking); Cobalt/Aluminium ratio; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DSDP/ODP/IODP sample designation; Exp302; Infrared spectroscopy; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Iron/Aluminium ratio; Iron/Sulfur ratio; Magnesium/Aluminium ratio; Manganese/Aluminium ratio; Molybdenum/Aluminium ratio; Number of observations; Phosphorus/Aluminium ratio; Potassium/Aluminium ratio; Sample code/label; Sample code/label 2; Silicon/Aluminium ratio; Sulfur, total; Titanium/Aluminium ratio; Uranium/Aluminium ratio; Vanadium/Aluminium ratio; X-ray fluorescence core scanner (XRF) II, Bremen, (AVAATECH); Zinc/Aluminium ratio; Zirconium/Aluminium ratio |
| url | https://doi.org/10.1594/PANGAEA.733796 |