Geochemical provincialism in the Iceland plume
We present new Pb-Sr-Nd isotope, major and trace element data for a suite of basalts from central Iceland. We combine this new data with existing sample sets and interrogate it using spatial statistical methods. On the View the MathML source scale of a volcanic zone we find strong correlation betwee...
Published in: | Geochimica et Cosmochimica Acta |
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Language: | English |
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Published by Elsevier B.V.
2013
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:2892 2023-05-15T16:46:03+02:00 Geochemical provincialism in the Iceland plume Shorttle, Oliver Maclennan, John Piotrowski, Alexander M. 2013-12 text image http://eprints.esc.cam.ac.uk/2892/ http://eprints.esc.cam.ac.uk/2892/7/1-s2.0-S0016703713004845-main.pdf http://eprints.esc.cam.ac.uk/2892/8/1-s2.0-S0016703713004845-gr1.jpg http://eprints.esc.cam.ac.uk/2892/9/mmc1.csv http://www.sciencedirect.com/science/article/pii/S0016703713004845 https://doi.org/10.1016/j.gca.2013.08.032 en eng Published by Elsevier B.V. http://eprints.esc.cam.ac.uk/2892/7/1-s2.0-S0016703713004845-main.pdf http://eprints.esc.cam.ac.uk/2892/8/1-s2.0-S0016703713004845-gr1.jpg http://eprints.esc.cam.ac.uk/2892/9/mmc1.csv Shorttle, Oliver and Maclennan, John and Piotrowski, Alexander M. (2013) Geochemical provincialism in the Iceland plume. Geochimica et Cosmochimica Acta, 123. pp. 363-397. ISSN 0016-7037 DOI https://doi.org/10.1016/j.gca.2013.08.032 <https://doi.org/10.1016/j.gca.2013.08.032> cc_by CC-BY 02 - Geodynamics Geophysics and Tectonics Article PeerReviewed 2013 ftucambridgeesc https://doi.org/10.1016/j.gca.2013.08.032 2020-08-27T18:09:27Z We present new Pb-Sr-Nd isotope, major and trace element data for a suite of basalts from central Iceland. We combine this new data with existing sample sets and interrogate it using spatial statistical methods. On the View the MathML source scale of a volcanic zone we find strong correlation between the three isotope systems. However, on greater length scales we identify two types of spatial structure, both of which are most strongly observed in the Pb isotopes. Firstly, the mean Pb-isotopic composition of basalts becomes progressively less radiogenic from south to north Iceland, with our central Iceland dataset falling at intermediate compositions. Secondly, there is a shift in the pseudo-binary mixing array that samples fall along as the neovolcanic zones are stepped through south to north, both in Pb-Pb, and Pb-Sr/Nd isotope space. The Pb isotope systematics of Icelandic basalts therefore appear to be decoupled from those of Sr and Nd isotopes on length scales View the MathML source. Only within individual neovolcanic zones are there coherent relationships between the Pb, Sr and Nd isotopic compositions of basalts. The spatial structure uniquely recorded by Pb isotopes complements observations from previous authors that Pb isotope dynamics are fundamentally distinct from other isotope systems. Article in Journal/Newspaper Iceland University of Cambridge, Department of Earth Sciences: ESC Publications Geochimica et Cosmochimica Acta 122 363 397 |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
02 - Geodynamics Geophysics and Tectonics |
spellingShingle |
02 - Geodynamics Geophysics and Tectonics Shorttle, Oliver Maclennan, John Piotrowski, Alexander M. Geochemical provincialism in the Iceland plume |
topic_facet |
02 - Geodynamics Geophysics and Tectonics |
description |
We present new Pb-Sr-Nd isotope, major and trace element data for a suite of basalts from central Iceland. We combine this new data with existing sample sets and interrogate it using spatial statistical methods. On the View the MathML source scale of a volcanic zone we find strong correlation between the three isotope systems. However, on greater length scales we identify two types of spatial structure, both of which are most strongly observed in the Pb isotopes. Firstly, the mean Pb-isotopic composition of basalts becomes progressively less radiogenic from south to north Iceland, with our central Iceland dataset falling at intermediate compositions. Secondly, there is a shift in the pseudo-binary mixing array that samples fall along as the neovolcanic zones are stepped through south to north, both in Pb-Pb, and Pb-Sr/Nd isotope space. The Pb isotope systematics of Icelandic basalts therefore appear to be decoupled from those of Sr and Nd isotopes on length scales View the MathML source. Only within individual neovolcanic zones are there coherent relationships between the Pb, Sr and Nd isotopic compositions of basalts. The spatial structure uniquely recorded by Pb isotopes complements observations from previous authors that Pb isotope dynamics are fundamentally distinct from other isotope systems. |
format |
Article in Journal/Newspaper |
author |
Shorttle, Oliver Maclennan, John Piotrowski, Alexander M. |
author_facet |
Shorttle, Oliver Maclennan, John Piotrowski, Alexander M. |
author_sort |
Shorttle, Oliver |
title |
Geochemical provincialism in the Iceland plume |
title_short |
Geochemical provincialism in the Iceland plume |
title_full |
Geochemical provincialism in the Iceland plume |
title_fullStr |
Geochemical provincialism in the Iceland plume |
title_full_unstemmed |
Geochemical provincialism in the Iceland plume |
title_sort |
geochemical provincialism in the iceland plume |
publisher |
Published by Elsevier B.V. |
publishDate |
2013 |
url |
http://eprints.esc.cam.ac.uk/2892/ http://eprints.esc.cam.ac.uk/2892/7/1-s2.0-S0016703713004845-main.pdf http://eprints.esc.cam.ac.uk/2892/8/1-s2.0-S0016703713004845-gr1.jpg http://eprints.esc.cam.ac.uk/2892/9/mmc1.csv http://www.sciencedirect.com/science/article/pii/S0016703713004845 https://doi.org/10.1016/j.gca.2013.08.032 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://eprints.esc.cam.ac.uk/2892/7/1-s2.0-S0016703713004845-main.pdf http://eprints.esc.cam.ac.uk/2892/8/1-s2.0-S0016703713004845-gr1.jpg http://eprints.esc.cam.ac.uk/2892/9/mmc1.csv Shorttle, Oliver and Maclennan, John and Piotrowski, Alexander M. (2013) Geochemical provincialism in the Iceland plume. Geochimica et Cosmochimica Acta, 123. pp. 363-397. ISSN 0016-7037 DOI https://doi.org/10.1016/j.gca.2013.08.032 <https://doi.org/10.1016/j.gca.2013.08.032> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.gca.2013.08.032 |
container_title |
Geochimica et Cosmochimica Acta |
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122 |
container_start_page |
363 |
op_container_end_page |
397 |
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