The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard
Late Neoproterozoic metavolcanic rocks occur along the Southwest coast of Svalbard. The protoliths of the metavolcanic rocks from Wedel Jarlsberg Land and Nordenskiold Land are mainly diabase, basalt and felsic tuff of tholeiitic affinity associated with continental magmatism. We investigate the mag...
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Uppsala universitet, Mineralogi, petrologi och tektonik
2022
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474807 https://doi.org/10.1016/j.precamres.2021.106521 |
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ftuppsalauniv:oai:DiVA.org:uu-474807 2024-02-11T10:09:02+01:00 The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard Goluchowska, Karolina Barker, Abigail Manecki, Maciej Kosminska, Karolina Ellam, Robert M. Bazarnik, Jakub Faehnrich, Karol Czerny, Jerzy Majka, Jaroslaw 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474807 https://doi.org/10.1016/j.precamres.2021.106521 eng eng Uppsala universitet, Mineralogi, petrologi och tektonik AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Al Mickiewicza 30, PL-30059 Krakow, Poland.;Uppsala Univ, Dept Earth Sci, Mineral Petrol Tecton, Villavagen 16, SE-75236 Uppsala, Sweden. AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Al Mickiewicza 30, PL-30059 Krakow, Poland. Scottish Univ Environm Res Ctr, East Kilbride G75 0QF, Scotland. Polish Geol Inst, Natl Res Inst, Carpathian Branch, Skrzatow 1, PL-31560 Krakow, Poland. Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA. Elsevier BV Precambrian Research, 0301-9268, 2022, 370, orcid:0000-0001-5033-0751 orcid:0000-0002-6792-6866 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474807 doi:10.1016/j.precamres.2021.106521 ISI:000788102200001 info:eu-repo/semantics/openAccess Neoproterozoic metavolcanic rocks Svalbard Wedel Jarlsberg Land Nordenskio center dot ld Land Magma-crust interaction Geology Geologi Article in journal info:eu-repo/semantics/article text 2022 ftuppsalauniv https://doi.org/10.1016/j.precamres.2021.106521 2024-01-17T23:32:13Z Late Neoproterozoic metavolcanic rocks occur along the Southwest coast of Svalbard. The protoliths of the metavolcanic rocks from Wedel Jarlsberg Land and Nordenskiold Land are mainly diabase, basalt and felsic tuff of tholeiitic affinity associated with continental magmatism. We investigate the magma evolution of the meta-volcanic rocks paying particular attention to processes of magma-crust interaction and assess potential sources of crustal contamination. These goals are achieved by employing trace element geochemistry, as well as Sr and Nd isotope geochemistry. Metavolcanic rocks from the South (Orvindalen and Werenskioldbreen) have higher LREE, LILE and Th compared to rocks from the North (Nordenskiold Land), which are relatively enriched in Sr. Incompatible element ratios like Th/La, Th/Nb, La/Nb, Th/Yb and Nb/Yb also decrease from South to North. The Nd-143/Nd-144(635 Ma) ranges from 0.511396 to 0.512356 and increases from South to North. For Sr isotopes, the metavolcanic rocks show a wide range, however in the South we observe Sr-87/Sr-86(635 Ma) of 0.70407-0.73043 and in the North Sr-87/Sr-86(635 Ma) of 0.70410-0.71028. Energy Constrained - Assimilation and Fractional Crystallization (EC-AFC) modelling indicates that the extent of magma contamination is highest in the South. Additionally the modelling suggests fractional crystallization and assimilation of granulite or amphibolite followed by shale for the metavolcanic rocks in the South and for the North mixtures of carbonate and shale contributed. This geographical pattern of assimilation reflects the upper crustal metasedimentary sequences, where phyllites are common in the South (Orvindalen and Werenskioldbreen) and carbonates are more common in the North (Nordenskiold Land). Density contrasts and impermeable layers within the continental crust would likely have acted as barriers to ascending magma, forcing it to stall and providing opportunities for magma-crust interaction. Article in Journal/Newspaper Svalbard Wedel Jarlsberg Land Uppsala University: Publications (DiVA) Svalbard Wedel-Jarlsberg ENVELOPE(-165.133,-165.133,-85.650,-85.650) Wedel Jarlsberg Land ENVELOPE(15.362,15.362,77.201,77.201) Werenskioldbreen ENVELOPE(15.336,15.336,77.077,77.077) Orvindalen ENVELOPE(14.472,14.472,77.308,77.308) Precambrian Research 370 106521 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Neoproterozoic metavolcanic rocks Svalbard Wedel Jarlsberg Land Nordenskio center dot ld Land Magma-crust interaction Geology Geologi |
spellingShingle |
Neoproterozoic metavolcanic rocks Svalbard Wedel Jarlsberg Land Nordenskio center dot ld Land Magma-crust interaction Geology Geologi Goluchowska, Karolina Barker, Abigail Manecki, Maciej Kosminska, Karolina Ellam, Robert M. Bazarnik, Jakub Faehnrich, Karol Czerny, Jerzy Majka, Jaroslaw The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
topic_facet |
Neoproterozoic metavolcanic rocks Svalbard Wedel Jarlsberg Land Nordenskio center dot ld Land Magma-crust interaction Geology Geologi |
description |
Late Neoproterozoic metavolcanic rocks occur along the Southwest coast of Svalbard. The protoliths of the metavolcanic rocks from Wedel Jarlsberg Land and Nordenskiold Land are mainly diabase, basalt and felsic tuff of tholeiitic affinity associated with continental magmatism. We investigate the magma evolution of the meta-volcanic rocks paying particular attention to processes of magma-crust interaction and assess potential sources of crustal contamination. These goals are achieved by employing trace element geochemistry, as well as Sr and Nd isotope geochemistry. Metavolcanic rocks from the South (Orvindalen and Werenskioldbreen) have higher LREE, LILE and Th compared to rocks from the North (Nordenskiold Land), which are relatively enriched in Sr. Incompatible element ratios like Th/La, Th/Nb, La/Nb, Th/Yb and Nb/Yb also decrease from South to North. The Nd-143/Nd-144(635 Ma) ranges from 0.511396 to 0.512356 and increases from South to North. For Sr isotopes, the metavolcanic rocks show a wide range, however in the South we observe Sr-87/Sr-86(635 Ma) of 0.70407-0.73043 and in the North Sr-87/Sr-86(635 Ma) of 0.70410-0.71028. Energy Constrained - Assimilation and Fractional Crystallization (EC-AFC) modelling indicates that the extent of magma contamination is highest in the South. Additionally the modelling suggests fractional crystallization and assimilation of granulite or amphibolite followed by shale for the metavolcanic rocks in the South and for the North mixtures of carbonate and shale contributed. This geographical pattern of assimilation reflects the upper crustal metasedimentary sequences, where phyllites are common in the South (Orvindalen and Werenskioldbreen) and carbonates are more common in the North (Nordenskiold Land). Density contrasts and impermeable layers within the continental crust would likely have acted as barriers to ascending magma, forcing it to stall and providing opportunities for magma-crust interaction. |
format |
Article in Journal/Newspaper |
author |
Goluchowska, Karolina Barker, Abigail Manecki, Maciej Kosminska, Karolina Ellam, Robert M. Bazarnik, Jakub Faehnrich, Karol Czerny, Jerzy Majka, Jaroslaw |
author_facet |
Goluchowska, Karolina Barker, Abigail Manecki, Maciej Kosminska, Karolina Ellam, Robert M. Bazarnik, Jakub Faehnrich, Karol Czerny, Jerzy Majka, Jaroslaw |
author_sort |
Goluchowska, Karolina |
title |
The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
title_short |
The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
title_full |
The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
title_fullStr |
The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
title_full_unstemmed |
The role of crustal contamination in magma evolution of Neoproterozoic metaigneous rocks from Southwest Svalbard |
title_sort |
role of crustal contamination in magma evolution of neoproterozoic metaigneous rocks from southwest svalbard |
publisher |
Uppsala universitet, Mineralogi, petrologi och tektonik |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474807 https://doi.org/10.1016/j.precamres.2021.106521 |
long_lat |
ENVELOPE(-165.133,-165.133,-85.650,-85.650) ENVELOPE(15.362,15.362,77.201,77.201) ENVELOPE(15.336,15.336,77.077,77.077) ENVELOPE(14.472,14.472,77.308,77.308) |
geographic |
Svalbard Wedel-Jarlsberg Wedel Jarlsberg Land Werenskioldbreen Orvindalen |
geographic_facet |
Svalbard Wedel-Jarlsberg Wedel Jarlsberg Land Werenskioldbreen Orvindalen |
genre |
Svalbard Wedel Jarlsberg Land |
genre_facet |
Svalbard Wedel Jarlsberg Land |
op_relation |
Precambrian Research, 0301-9268, 2022, 370, orcid:0000-0001-5033-0751 orcid:0000-0002-6792-6866 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474807 doi:10.1016/j.precamres.2021.106521 ISI:000788102200001 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.precamres.2021.106521 |
container_title |
Precambrian Research |
container_volume |
370 |
container_start_page |
106521 |
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1790608737602371584 |