(Table 1) Luminescence age determination of sediments from the Arkhangelsk area
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2001
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| _version_ | 1867169021274619904 |
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| author | Lyså, Astrid Demidov, Igor Houmark-Nielsen, Michael Larsen, Eiliv |
| author_facet | Lyså, Astrid Demidov, Igor Houmark-Nielsen, Michael Larsen, Eiliv |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Arkhangelsk area lies in the region that was reached by the northeastern flank of the Scandinavian ice sheet during the last glaciation. Investigations of Late Pleistocene sediments show interglacial terrestrial and marine conditions with sea level up to 52 m above the present level. An unconformity in the stratigraphy suggests a hiatus representing the Early Valdaian (Weichselian) and the beginning of the Middle Valdaian. This unconformity could be related to a low base level and isostatic depression of the area north of Arkhangelsk, either caused by ice masses advancing from the Kara and Barents ice sheets and/or to Scandinavian ice over the Kola Peninsula. During Middle Valdaian, from c. 66 ka BP, until the advance of the Late Valdaian glacier, c. 17-16 ka BP, peat formation, and northward fluvial sedimentation occurred coexisting with permafrost conditions in a later phase. Before the glacier advance, the base level rose and thick vertical accumulations of fluvial sediments were formed. Associated with this glacier advance from the north-northwest, ice damming occurred. Fluvial drainage was opposite to the present drainage pattern and deposition appeared in glaciolacustrine ponds in the area outside the limit of the glaciation. After the deglaciation that started c. 15 ka BP, permafrost conditions and downwasting of buried stagnant glacier ice prevailed until at least 10.7 ka BP. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_728795 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Luminescence age determination of sediments from the Arkhangelsk area Lyså, Astrid Demidov, Igor Houmark-Nielsen, Michael Larsen, Eiliv Age, dated; Age, dated, standard deviation; Age, optical stimulated luminescence (OSL); Area/locality; Dose rate; Equivalent dose; LATITUDE; Lithology/composition/facies; LONGITUDE; Quaternary Environment of the Eurasian North; QUEEN; Replicates; Sample code/label; Sample code/label 2 The Arkhangelsk area lies in the region that was reached by the northeastern flank of the Scandinavian ice sheet during the last glaciation. Investigations of Late Pleistocene sediments show interglacial terrestrial and marine conditions with sea level up to 52 m above the present level. An unconformity in the stratigraphy suggests a hiatus representing the Early Valdaian (Weichselian) and the beginning of the Middle Valdaian. This unconformity could be related to a low base level and isostatic depression of the area north of Arkhangelsk, either caused by ice masses advancing from the Kara and Barents ice sheets and/or to Scandinavian ice over the Kola Peninsula. During Middle Valdaian, from c. 66 ka BP, until the advance of the Late Valdaian glacier, c. 17-16 ka BP, peat formation, and northward fluvial sedimentation occurred coexisting with permafrost conditions in a later phase. Before the glacier advance, the base level rose and thick vertical accumulations of fluvial sediments were formed. Associated with this glacier advance from the north-northwest, ice damming occurred. Fluvial drainage was opposite to the present drainage pattern and deposition appeared in glaciolacustrine ponds in the area outside the limit of the glaciation. After the deglaciation that started c. 15 ka BP, permafrost conditions and downwasting of buried stagnant glacier ice prevailed until at least 10.7 ka BP. |
| title | (Table 1) Luminescence age determination of sediments from the Arkhangelsk area |
| topic | Age, dated; Age, dated, standard deviation; Age, optical stimulated luminescence (OSL); Area/locality; Dose rate; Equivalent dose; LATITUDE; Lithology/composition/facies; LONGITUDE; Quaternary Environment of the Eurasian North; QUEEN; Replicates; Sample code/label; Sample code/label 2 |
| url | https://doi.org/10.1594/PANGAEA.728795 |