Chemical composition of tephra from the Greenland-Iceland-Norwegian-Sea
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2003
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| _version_ | 1867169500759064576 |
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| author | Wallrabe-Adams, Hans-Joachim Lackschewitz, Klas Sven |
| author_facet | Wallrabe-Adams, Hans-Joachim Lackschewitz, Klas Sven |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Explosive ocean island volcanism in the Greenland-Iceland-Norwegian Sea (GIN Sea) is indicated by marine tephra layers at 10-300 ka. Peaks of explosive volcanism occurred in oxygen isotope stages 8, 7, 5 and 1. The depositional age of the tephra was estimated using the oxygen isotope stratigraphy and dating of marine records. Geochemical analyses of the tephra layers show that all originate from Iceland. Here we report the characteristics of tephra from these major Icelandic events in 30 deep-sea cores from the GIN Sea. Our findings provide constraints on the distribution of tephra from the eruption source. For the Vedde Ash (oxygen isotope stage 1) we estimate a minimum fallout area of 2*10**5 km**2, stretching from central Greenland in the west and southern Sweden in the east, to 71°N in the GIN Sea. The magnitude of the eruption and the regional wind conditions controlled the extent and concentrations of these ash fallout events. Oceanic circulation and differential settling may have affected the distribution and final deposition of ash particles such as bubble wall shards. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_736516 |
| institution | PANGAEA |
| language | en |
| publishDate | 2003 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Chemical composition of tephra from the Greenland-Iceland-Norwegian-Sea Wallrabe-Adams, Hans-Joachim Lackschewitz, Klas Sven 403; ARK-II/5; ARK-VII/1; Atlantic Ocean; Giant box corer; GIK21852-2 PS17/018; GIK21857-2 PS17/024; GIK23059-3; GIK23065-3; GIK23243-1 PS05/431; GIK23244-2 PS05/449; GIK23245-1 PS05/450; GIK23359-4; GKG; Gravity corer (Kiel type); Iceland Sea; KAL; Kasten corer; Kolbeinsey Ridge; M2/2; M7/5; Meteor (1986); Norwegian Sea; PO158/A; Polarstern; POS158/1; POS158/1_0001/1; Poseidon; PS05; PS1243-1; PS1244-2; PS1245-1; PS17; PS1852-2; PS1857-2; SL Explosive ocean island volcanism in the Greenland-Iceland-Norwegian Sea (GIN Sea) is indicated by marine tephra layers at 10-300 ka. Peaks of explosive volcanism occurred in oxygen isotope stages 8, 7, 5 and 1. The depositional age of the tephra was estimated using the oxygen isotope stratigraphy and dating of marine records. Geochemical analyses of the tephra layers show that all originate from Iceland. Here we report the characteristics of tephra from these major Icelandic events in 30 deep-sea cores from the GIN Sea. Our findings provide constraints on the distribution of tephra from the eruption source. For the Vedde Ash (oxygen isotope stage 1) we estimate a minimum fallout area of 2*10**5 km**2, stretching from central Greenland in the west and southern Sweden in the east, to 71°N in the GIN Sea. The magnitude of the eruption and the regional wind conditions controlled the extent and concentrations of these ash fallout events. Oceanic circulation and differential settling may have affected the distribution and final deposition of ash particles such as bubble wall shards. |
| title | Chemical composition of tephra from the Greenland-Iceland-Norwegian-Sea |
| topic | 403; ARK-II/5; ARK-VII/1; Atlantic Ocean; Giant box corer; GIK21852-2 PS17/018; GIK21857-2 PS17/024; GIK23059-3; GIK23065-3; GIK23243-1 PS05/431; GIK23244-2 PS05/449; GIK23245-1 PS05/450; GIK23359-4; GKG; Gravity corer (Kiel type); Iceland Sea; KAL; Kasten corer; Kolbeinsey Ridge; M2/2; M7/5; Meteor (1986); Norwegian Sea; PO158/A; Polarstern; POS158/1; POS158/1_0001/1; Poseidon; PS05; PS1243-1; PS1244-2; PS1245-1; PS17; PS1852-2; PS1857-2; SL |
| url | https://doi.org/10.1594/PANGAEA.736516 |