Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2008
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| _version_ | 1867169497933152256 |
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| author | Tripati, Aradhna K Eagle, Robert A Morton, Andrew C Dowdeswell, Julian A Atkinson, Katie L Bahé, Yannick Dawber, Caroline F Khadun, Emma Shaw, Ruth M H Shorttle, Oliver Thanabalasundaram, Lavaniya |
| author_facet | Tripati, Aradhna K Eagle, Robert A Morton, Andrew C Dowdeswell, Julian A Atkinson, Katie L Bahé, Yannick Dawber, Caroline F Khadun, Emma Shaw, Ruth M H Shorttle, Oliver Thanabalasundaram, Lavaniya |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The widely accepted age estimate for the onset of glaciation in the Northern Hemisphere ranges between 2 and 15 million years ago (Ma). However, recent studies indicate the date for glacial onset may be significantly older. We report the presence of ice-rafted debris (IRD) in ~44 to 30 Ma sediments from the Greenland Sea, evidence for glaciation in the North Atlantic during the Middle Eocene to Early Oligocene. Detailed sedimentological evidence indicates that glaciers extended to sea level in the region, allowing icebergs to be produced. IRD may have been sourced from tidewater glaciers, small ice caps, and/or a continental ice sheet. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_707156 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma Tripati, Aradhna K Eagle, Robert A Morton, Andrew C Dowdeswell, Julian A Atkinson, Katie L Bahé, Yannick Dawber, Caroline F Khadun, Emma Shaw, Ruth M H Shorttle, Oliver Thanabalasundaram, Lavaniya 151-913B; DRILL; Drilling/drill rig; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP The widely accepted age estimate for the onset of glaciation in the Northern Hemisphere ranges between 2 and 15 million years ago (Ma). However, recent studies indicate the date for glacial onset may be significantly older. We report the presence of ice-rafted debris (IRD) in ~44 to 30 Ma sediments from the Greenland Sea, evidence for glaciation in the North Atlantic during the Middle Eocene to Early Oligocene. Detailed sedimentological evidence indicates that glaciers extended to sea level in the region, allowing icebergs to be produced. IRD may have been sourced from tidewater glaciers, small ice caps, and/or a continental ice sheet. |
| title | Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
| topic | 151-913B; DRILL; Drilling/drill rig; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.707156 |