Sedimentation rates and geochemistry of the Atlantic and Indic Ocean of Late Miocene - Early Pliocene
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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2001
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| _version_ | 1867169500972974080 |
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| author | Hermoyian, Casey S Owen, Robert M |
| author_facet | Hermoyian, Casey S Owen, Robert M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Studies of the late Miocene-early Pliocene biogenic bloom typically have focused on high-productivity areas in the Indian and Pacific Oceans in order to achieve high resolution samples. Thus there is a paucity of information concerning whether the Atlantic Ocean, in general or low-productivity regions in all three basins experienced this bloom. This study measured the phosphorus mass accumulation rate (PMAR). in five cores from low-productivity regions of the Atlantic and Indian Oceans. All cores exhibit a peak in productivity 4-5.5 Ma, coincident with the Indo-Pacific bloom. This suggests that nutrients were not shifted away from low-productivity regions nor out of the Atlantic Ocean. Instead, it appears that the bloom was caused by an overall increase in nutrient flux into the world oceans. Four of the cores record the bloom's PMAR peak as bimodal, indicating a pulsed increase in phosphorus to the oceans. This suggests that there may have been multiple causes of the biogenic bloom. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_738557 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sedimentation rates and geochemistry of the Atlantic and Indic Ocean of Late Miocene - Early Pliocene Hermoyian, Casey S Owen, Robert M 121-756B; 121-757B; 72-516A; 73-522; 74-526A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Joides Resolution; Leg121; Leg72; Leg73; Leg74; Ocean Drilling Program; ODP; South Atlantic/CONT RISE; South Atlantic/CREST; South Atlantic/PLATEAU; South Indian Ridge, South Indian Ocean Studies of the late Miocene-early Pliocene biogenic bloom typically have focused on high-productivity areas in the Indian and Pacific Oceans in order to achieve high resolution samples. Thus there is a paucity of information concerning whether the Atlantic Ocean, in general or low-productivity regions in all three basins experienced this bloom. This study measured the phosphorus mass accumulation rate (PMAR). in five cores from low-productivity regions of the Atlantic and Indian Oceans. All cores exhibit a peak in productivity 4-5.5 Ma, coincident with the Indo-Pacific bloom. This suggests that nutrients were not shifted away from low-productivity regions nor out of the Atlantic Ocean. Instead, it appears that the bloom was caused by an overall increase in nutrient flux into the world oceans. Four of the cores record the bloom's PMAR peak as bimodal, indicating a pulsed increase in phosphorus to the oceans. This suggests that there may have been multiple causes of the biogenic bloom. |
| title | Sedimentation rates and geochemistry of the Atlantic and Indic Ocean of Late Miocene - Early Pliocene |
| topic | 121-756B; 121-757B; 72-516A; 73-522; 74-526A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Joides Resolution; Leg121; Leg72; Leg73; Leg74; Ocean Drilling Program; ODP; South Atlantic/CONT RISE; South Atlantic/CREST; South Atlantic/PLATEAU; South Indian Ridge, South Indian Ocean |
| url | https://doi.org/10.1594/PANGAEA.738557 |