K-Ar ages of basalts from islands of the Franz Josef Land archipelago

DOI

New K-Ar age determinations of basalt samples from three drill holes and outcrops on the Franz Josef Land suggest that flood volcanism throughout the archipelago fits in a very narrow age interval (116±5 Ma). For 95% of the samples we studied, age scatter is within analytical uncertainty. New data on basaltic bulk-rock, trace element, and REE compositions point to mantle plume affinity for Early Cretaceous magmatism on the Franz Josef Land, which preceded the onset of seafloor spreading in the Canada Basin.

Supplement to: Grachev, A F; Arakelyantz, M M; Lebedev, V A; Musatov, Evgeny E; Stolbov, N M (2001): New K-Ar ages for basalts from Franz Josef Land. Russian Journal of Earth Sciences, 3(1), 79-82

Identifier
DOI https://doi.org/10.1594/PANGAEA.746727
Related Identifier IsSupplementTo https://doi.org/10.2205/2001ES000053
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.746727
Provenance
Creator Grachev, A F; Arakelyantz, M M; Lebedev, V A ORCID logo; Musatov, Evgeny E; Stolbov, N M
Publisher PANGAEA
Publication Year 2001
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 4 datasets
Discipline Earth System Research
Spatial Coverage (47.708W, 80.137S, 64.333E, 81.237N); George Land, Franz Josef Land; Hooker Island, Franz Josef Land; Hays Island, Franz Josef Land; Franz Josef Land; Alexandra Land Island, Franz Josef Land; Graham Bell Island, Franz Josef Land; Greeley Island, Franz Josef Land; Jackson Island, Franz Josef Land; Wiener Neustadt Island, Franz Josef Land
Temporal Coverage Begin 1977-01-01T00:00:00Z
Temporal Coverage End 1980-01-01T00:00:00Z