Accumulation rates of volcanic glass and ice-rafted debris in sediments of the North Pacific Ocean
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| Autori principali: | , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2001
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| _version_ | 1867171356889579520 |
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| author | Prueher, Libby M Rea, David K |
| author_facet | Prueher, Libby M Rea, David K |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Mass accumulation rates (MAR) of different components of North Pacific deep-sea sediment provide detailed information about the timing of the onset of major Northern Hemisphere glaciation that occurred at 2.65 Ma. An increase in explosive volcanism in the Kamchatka-Kurile and Aleutian arcs occured at this same time, suggesting a link between volcanism and glaciation. Sediments recovered by piston-coring techniques during ODP Leg 145 provide a unique opportunity to undertake a detailed test of this possibility. Here we use volcanic glass as a proxy for explosive volcanism and ice-rafted debris (IRD) as a proxy for glaciation. The MAR of both glass and IRD increase markedly at 2.65 Ma. Further, the flux of the volcanic glass increased just prior the flix of ice-radted material, suggesting that the cooling resulting from explosive volcanic eruptions may have been the ultimate trigger for the mid-Pliocene glacial intensification. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_706310 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Accumulation rates of volcanic glass and ice-rafted debris in sediments of the North Pacific Ocean Prueher, Libby M Rea, David K 145-882; 145-883; 145-887; COMPCORE; Composite Core; Joides Resolution; Leg145; North Pacific Ocean; Ocean Drilling Program; ODP Mass accumulation rates (MAR) of different components of North Pacific deep-sea sediment provide detailed information about the timing of the onset of major Northern Hemisphere glaciation that occurred at 2.65 Ma. An increase in explosive volcanism in the Kamchatka-Kurile and Aleutian arcs occured at this same time, suggesting a link between volcanism and glaciation. Sediments recovered by piston-coring techniques during ODP Leg 145 provide a unique opportunity to undertake a detailed test of this possibility. Here we use volcanic glass as a proxy for explosive volcanism and ice-rafted debris (IRD) as a proxy for glaciation. The MAR of both glass and IRD increase markedly at 2.65 Ma. Further, the flux of the volcanic glass increased just prior the flix of ice-radted material, suggesting that the cooling resulting from explosive volcanic eruptions may have been the ultimate trigger for the mid-Pliocene glacial intensification. |
| title | Accumulation rates of volcanic glass and ice-rafted debris in sediments of the North Pacific Ocean |
| topic | 145-882; 145-883; 145-887; COMPCORE; Composite Core; Joides Resolution; Leg145; North Pacific Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.706310 |