Chemical composition of tephra from the Greenland-Iceland-Norwegian-Sea

DOI

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 2105 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.

Supplement to: Wallrabe-Adams, Hans-Joachim; Lackschewitz, Klas Sven (2003): Chemical composition, distribution, and origin of silicic volcanic ash layers in the Greenland–Iceland–Norwegian Sea: explosive volcanism from 10 to 300 ka as recorded in deep-sea sediments. Marine Geology, 193(3-4), 273-293

Identifier
DOI https://doi.org/10.1594/PANGAEA.736516
Related Identifier IsSupplementTo https://doi.org/10.1016/S0025-3227(02)00661-8
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.736516
Provenance
Creator Wallrabe-Adams, Hans-Joachim ORCID logo; Lackschewitz, Klas Sven
Publisher PANGAEA
Publication Year 2003
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 11 datasets
Discipline Earth System Research
Spatial Coverage (-17.636W, 65.528S, 0.818E, 70.480N); Norwegian Sea; Atlantic Ocean; Iceland Sea; Kolbeinsey Ridge
Temporal Coverage Begin 1984-09-03T00:00:00Z
Temporal Coverage End 1990-06-18T00:00:00Z