Sedimentation rates and isotope data of Pyrgo murrhina from DSDP Hole 14-141
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| Auteurs principaux: | , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
1986
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| _version_ | 1867171361529528320 |
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| author | Stein, Ruediger Bleil, Ulrich |
| author_facet | Stein, Ruediger Bleil, Ulrich |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Oxygen and carbon stable isotope data of Pyrgo murrhina and flux rates of calcium carbonate in the bio- and magnetostratigraphically dated sediment sequence at DSDP Site 141 were used for a reconstruction of the deep-water circulation in the Northeast Atlantic during Late Miocene and Pliocene times. A distinct change towards reduced advection of deep water recorded near 5.4 Ma is contemporaneous with the cessation of the outflow of the saline Mediterranean water into the Atlantic. During the Pliocene, between 4.5 and 2.75 Ma and between 2.1 and 1.8 Ma, North Atlantic Deep Water (NADW) circulation was sluggish and Site 141 possibly influenced by Antarctic Bottom Water (AABW). Near 2.75 Ma, the advection of well-oxidized NADW was strongly intensified. This change is related to an onset of major Arctic ice growth and/or a major cooling of NADW. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_761089 |
| institution | PANGAEA |
| language | en |
| publishDate | 1986 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sedimentation rates and isotope data of Pyrgo murrhina from DSDP Hole 14-141 Stein, Ruediger Bleil, Ulrich 14-141; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg14; North Atlantic/DIAPIR Oxygen and carbon stable isotope data of Pyrgo murrhina and flux rates of calcium carbonate in the bio- and magnetostratigraphically dated sediment sequence at DSDP Site 141 were used for a reconstruction of the deep-water circulation in the Northeast Atlantic during Late Miocene and Pliocene times. A distinct change towards reduced advection of deep water recorded near 5.4 Ma is contemporaneous with the cessation of the outflow of the saline Mediterranean water into the Atlantic. During the Pliocene, between 4.5 and 2.75 Ma and between 2.1 and 1.8 Ma, North Atlantic Deep Water (NADW) circulation was sluggish and Site 141 possibly influenced by Antarctic Bottom Water (AABW). Near 2.75 Ma, the advection of well-oxidized NADW was strongly intensified. This change is related to an onset of major Arctic ice growth and/or a major cooling of NADW. |
| title | Sedimentation rates and isotope data of Pyrgo murrhina from DSDP Hole 14-141 |
| topic | 14-141; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg14; North Atlantic/DIAPIR |
| url | https://doi.org/10.1594/PANGAEA.761089 |