Portrait of a giant deep-seated magmatic conduit system: The Seiland Igneous Province

The Seiland Igneous Province (SIP), Northern Norway, contains >5000km2 of mafic and ultramafic intrusions with minor alkaline, carbonatite and felsic rocks that were intruded into the lower continental crust at a depth of 25 to as much as 35km. The SIP can be geochemically and temporally correlat...

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Bibliographic Details
Published in:Lithos 2018-01, Vol.296-299, p.600-622
Main Authors: Larsen, Rune B., Grant, Thomas, Sørensen, Bjørn E., Tegner, Christian, McEnroe, Suzanne, Pastore, Zeudia, Fichler, Christine, Nikolaisen, Even, Grannes, Kim R., Church, Nathan, ter Maat, Geertje W., Michels, Alexander
Format: Article
Language:English
Subjects:
AFC-processes
Central Iapetus Magmatic Province
Mantle volatiles
Plume magmatism
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Summary:The Seiland Igneous Province (SIP), Northern Norway, contains >5000km2 of mafic and ultramafic intrusions with minor alkaline, carbonatite and felsic rocks that were intruded into the lower continental crust at a depth of 25 to as much as 35km. The SIP can be geochemically and temporally correlated to numerous dyke swarms throughout Scandinavia at 560–610Ma, and is linked to magmatic provinces in W-Greenland and NE-America that are collectively known as the Central Iapetus Magmatic Province (CIMP). Revised mapping show that the SIP exposes 85–90% layered tholeiitic- alkaline- and syeno-gabbros, 8–10% peridotitic complexes, 2-5% carbonatite, syenite and diorite that formed within a narrow (
ISSN:0024-4937
1872-6143
DOI:10.1016/j.lithos.2017.11.013