K-Ar ages of basalts from islands of the Franz Josef Land archipelago
| Cobertura |
MEDIAN LATITUDE: 80.688764 * MEDIAN LONGITUDE: 55.493759 * SOUTH-BOUND LATITUDE: 80.137000 * WEST-BOUND LONGITUDE: 47.708300 * NORTH-BOUND LATITUDE: 81.237400 * EAST-BOUND LONGITUDE: 64.333300 * DATE/TIME START: 1977-01-01T00:00:00 * DATE/TIME END: 1980-01-01T00:00:00 |
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| Data(s) |
21/10/2001
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| Resumo |
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. |
| Formato |
application/zip, 4 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.746727 doi:10.1594/PANGAEA.746727 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Grachev, AF; Arakelyantz, MM; Lebedev, VA; Musatov, Evgeny E; Stolbov, NM (2001): New K-Ar ages for basalts from Franz Josef Land. Russian Journal of Earth Sciences, 3(1), 79-82, doi:10.2205/2001ES000053 |
| Palavras-Chave | #40Ar; 40Ar std dev; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated standard deviation; Age dated; Age std dev; Alexandra Land Island, Franz Josef Land; Archive of Ocean Data; ARCOD; Argon-40; Argon-40, standard deviation; Calculated; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth top; DRILL; Drilling/drill rig; Event; FJL-5534-1; Flame photometry; Franz Josef Land; George Land, Franz Josef Land; GL-5505-1A; Graham Bell Island, Franz Josef Land; Greeley Island, Franz Josef Land; H-5547-1; H-5547-2A; Hays-1; Hays Island, Franz Josef Land; Hooker Island, Franz Josef Land; Jackson Island, Franz Josef Land; K; K std dev; Mass spectrometry; MK-1; Nagursk-1; Northern-1; OG-98-3A; Potassium; Potassium, standard deviation; Sample type; Samp type; V-98-4; VNIIO-1979; VNIIO-1980; Wiener Neustadt Island, Franz Josef Land; WN-3674 |
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Dataset |
