Late holocene submerged peat in the southern side of hóp lagoon, north iceland
We drilled in the coastal lowland of the Hóp area using a piston type peat corer in order to identify the end of the age of postglacial glacio-isostatic uplift. The depth of drilling was about 2m below the present sea level, and diatom analysis was carried out for core samples about 3m thick. All th...
| Main Authors: | , , |
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| Format: | Report |
| Language: | French |
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Department of Geography, Tokyo Metropolitan University
1986
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| Subjects: | |
| Online Access: | https://tokyo-metro-u.repo.nii.ac.jp/?action=repository_uri&item_id=2813 http://hdl.handle.net/10748/3558 https://tokyo-metro-u.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2813&item_no=1&attribute_id=18&file_no=1 |
| Summary: | We drilled in the coastal lowland of the Hóp area using a piston type peat corer in order to identify the end of the age of postglacial glacio-isostatic uplift. The depth of drilling was about 2m below the present sea level, and diatom analysis was carried out for core samples about 3m thick. All the deposits consist of peaty materials deposited under fresh water conditions which intercalate H1 micro-pumice layer that erupted in 1104 A.D. at a depth of about 1.2m. The radiocarbon date of basal peat at about 2m below sea level is 2380±150 yBP (GaK-12199), indicating that the isostatic uplift ended more than about 2400 years ago. Since late Holocene submerged peat layers are found in various parts of Iceland as well as in this area, it is clear that the whole coast of Iceland was submerged in the late Holocene. Glacial loading in the late Holocene seems to have been responsible for this submergence. |
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