Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway
Sverrefjellet is a Pleistocene-age basaltic volcanic construct on north-western Spitsbergen Island (Svalbard Archipelago, Norway). Published ages for the Sverrefjellet eruption range between 6000 years and ca. 1 million years before present. The age of eruption is dated here as 1.05±0.07...
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Norwegian Polar Institute
2012
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ftdoajarticles:oai:doaj.org/article:06de31fc436d49448e97274ebde19f1b 2023-05-15T18:02:43+02:00 Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway Allan H. Treiman 2012-03-01T00:00:00Z https://doi.org/10.3402/polar.v31i0.17320 https://doaj.org/article/06de31fc436d49448e97274ebde19f1b EN eng Norwegian Polar Institute http://www.polarresearch.net/index.php/polar/article/view/17320/pdf_1 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v31i0.17320 0800-0395 1751-8369 https://doaj.org/article/06de31fc436d49448e97274ebde19f1b Polar Research, Vol 31, Iss 0, Pp 1-7 (2012) Svalbard Spitsbergen basalt Knipovich Ridge Ar–Ar Environmental sciences GE1-350 Oceanography GC1-1581 article 2012 ftdoajarticles https://doi.org/10.3402/polar.v31i0.17320 2022-12-31T08:46:02Z Sverrefjellet is a Pleistocene-age basaltic volcanic construct on north-western Spitsbergen Island (Svalbard Archipelago, Norway). Published ages for the Sverrefjellet eruption range between 6000 years and ca. 1 million years before present. The age of eruption is dated here as 1.05±0.07 (1σ) My, consistent with Ar–Ar isochron and plateau ages of several analysed samples. Radiogenic Ar represents a small proportion of the released Ar, <15% in nearly all samples. Non-radiogenic Ar components include air, excess 40Ar (seen as inverse isochron intercept values >40Ar/36Ar = 295.5), low-temperature alterations (Ar release at low temperature, with high Cl/K), carbonates and zeolites (Ar release at intermediate temperature) and xenolithic material (Ar release at high temperature, high Ca/K). The effects of the largely non-radiogenic argon sources are also seen in the total-gas Ar–Ar “ages”, which range from 1.3 to 10.3 My, significantly larger than the inferred eruption age. It is likely that total-gas Ar–Ar “ages” and whole-rock K–Ar “ages” of similar basalts also exceed their true eruption ages.To access the supplementary material to this article please see Supplementary files under Article Tools online. Article in Journal/Newspaper Polar Research Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Svalbard Svalbard Archipelago Norway Knipovich Ridge ENVELOPE(7.074,7.074,75.712,75.712) Sverrefjellet ENVELOPE(13.300,13.300,79.433,79.433) Polar Research 31 1 17320 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Svalbard Spitsbergen basalt Knipovich Ridge Ar–Ar Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
Svalbard Spitsbergen basalt Knipovich Ridge Ar–Ar Environmental sciences GE1-350 Oceanography GC1-1581 Allan H. Treiman Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
topic_facet |
Svalbard Spitsbergen basalt Knipovich Ridge Ar–Ar Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
Sverrefjellet is a Pleistocene-age basaltic volcanic construct on north-western Spitsbergen Island (Svalbard Archipelago, Norway). Published ages for the Sverrefjellet eruption range between 6000 years and ca. 1 million years before present. The age of eruption is dated here as 1.05±0.07 (1σ) My, consistent with Ar–Ar isochron and plateau ages of several analysed samples. Radiogenic Ar represents a small proportion of the released Ar, <15% in nearly all samples. Non-radiogenic Ar components include air, excess 40Ar (seen as inverse isochron intercept values >40Ar/36Ar = 295.5), low-temperature alterations (Ar release at low temperature, with high Cl/K), carbonates and zeolites (Ar release at intermediate temperature) and xenolithic material (Ar release at high temperature, high Ca/K). The effects of the largely non-radiogenic argon sources are also seen in the total-gas Ar–Ar “ages”, which range from 1.3 to 10.3 My, significantly larger than the inferred eruption age. It is likely that total-gas Ar–Ar “ages” and whole-rock K–Ar “ages” of similar basalts also exceed their true eruption ages.To access the supplementary material to this article please see Supplementary files under Article Tools online. |
format |
Article in Journal/Newspaper |
author |
Allan H. Treiman |
author_facet |
Allan H. Treiman |
author_sort |
Allan H. Treiman |
title |
Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
title_short |
Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
title_full |
Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
title_fullStr |
Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
title_full_unstemmed |
Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway |
title_sort |
eruption age of the sverrefjellet volcano, spitsbergen island, norway |
publisher |
Norwegian Polar Institute |
publishDate |
2012 |
url |
https://doi.org/10.3402/polar.v31i0.17320 https://doaj.org/article/06de31fc436d49448e97274ebde19f1b |
long_lat |
ENVELOPE(7.074,7.074,75.712,75.712) ENVELOPE(13.300,13.300,79.433,79.433) |
geographic |
Svalbard Svalbard Archipelago Norway Knipovich Ridge Sverrefjellet |
geographic_facet |
Svalbard Svalbard Archipelago Norway Knipovich Ridge Sverrefjellet |
genre |
Polar Research Svalbard Spitsbergen |
genre_facet |
Polar Research Svalbard Spitsbergen |
op_source |
Polar Research, Vol 31, Iss 0, Pp 1-7 (2012) |
op_relation |
http://www.polarresearch.net/index.php/polar/article/view/17320/pdf_1 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v31i0.17320 0800-0395 1751-8369 https://doaj.org/article/06de31fc436d49448e97274ebde19f1b |
op_doi |
https://doi.org/10.3402/polar.v31i0.17320 |
container_title |
Polar Research |
container_volume |
31 |
container_issue |
1 |
container_start_page |
17320 |
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1766173276355166208 |