Provenance of bentonite layers in the Palaeocene strata of the Central Basin, Svalbard: implications for magmatism and rifting events around the onset of the North Atlantic Igneous Province

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• 作者：Morgan T. Jones^a ; ^{m.t.jones@geo.uio.no} ; Gauti T. Eliassen^a ; Grace E. Shephard^a ; Henrik H. Svensen^a ; Malte Jochmann^b ; ^c ; Bjarki Friis^b ; ^d ; Lars E. Augland^a ; Dougal A. Jerram^a ; ^e ; ^f ; Sverre Planke^a ; ^g
• 关键词：Svalbard ; Palaeocene ; Bentonite ; Kap Washington ; Nares Strait ; North Atlantic Igneous Province
• 刊名：Journal of Volcanology and Geothermal Research
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：327
• 期：Complete
• 页码：571-584
• 全文大小：2601 K
• 卷排序：327

文摘

The Central Basin in Svalbard preserves a record of Arctic Palaeocene volcanism. Despite alteration, immobile elements in the bentonites retain a magmatic signature. Early bentonites match volcanic centres from the Kap Washington Group, N. Greenland. Later ashes appear to originate from the Nares Strait region, near Ellesmere Island. These layers connect the basin development with regional plate tectonic changes.