Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry
Neodymium isotope data on exhalites and tuffs from the Cambrian Lemarchant volcanogenic massive sulphide (VMS) deposit provide insights into the tectonic environment of the Tally Pond group, Canada. New data from exhalites from the Lemarchant area show evolved values of εNd 513 = -6.0 to -1.8, where...
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ftunivtasecite:oai:ecite.utas.edu.au:133522 2023-05-15T17:22:28+02:00 Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry Lode, S Piercey, SJ Cloutier, J 2017 application/pdf https://doi.org/10.1144/jgs2017-008 http://ecite.utas.edu.au/133522 en eng Geological Soc Publ House http://ecite.utas.edu.au/133522/1/Lode et al 2017 (JGS)_Provenance of exhalites.pdf http://dx.doi.org/10.1144/jgs2017-008 Lode, S and Piercey, SJ and Cloutier, J, Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry, Journal of the Geological Society, 174, (6) pp. 954-967. ISSN 0016-7649 (2017) [Refereed Article] http://ecite.utas.edu.au/133522 Earth Sciences Geochemistry Isotope Geochemistry Refereed Article PeerReviewed 2017 ftunivtasecite https://doi.org/10.1144/jgs2017-008 2019-12-13T22:31:18Z Neodymium isotope data on exhalites and tuffs from the Cambrian Lemarchant volcanogenic massive sulphide (VMS) deposit provide insights into the tectonic environment of the Tally Pond group, Canada. New data from exhalites from the Lemarchant area show evolved values of εNd 513 = -6.0 to -1.8, whereas the associated volcanic rocks have εNd 513 of +0.4 to +1.4. The Lemarchant exhalite εNd compositions overlap the underlying Ganderian Neoproterozoic Sandy Brook Group (εNd t = -6.5 to -1.9) and Crippleback Intrusive Suite (εNd t = -5.9 to -5.2). The evolved Nd isotopic signatures suggest that the volcanic rocks of the Tally Pond group were formed upon Ganderian arc basement, which itself was possibly built upon, or proximal to, the Gondwanan Amazonian margin. Erosion of older crustal material and Tally Pond group volcanic rocks, together with coeval eruption of the volcanic rocks, released Nd-rich detritus into the water column. Uptake of eroded detrital and scavenged Nd resulted in mixed Nd sources (juvenile and evolved), which are archived in the exhalites. The results of this study are not only of significance for occurrences of exhalites within the Tally Pond group, but also have exploration implications for VMS districts globally. Article in Journal/Newspaper Newfoundland eCite UTAS (University of Tasmania) Canada Journal of the Geological Society 174 6 954 967 |
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eCite UTAS (University of Tasmania) |
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English |
topic |
Earth Sciences Geochemistry Isotope Geochemistry |
spellingShingle |
Earth Sciences Geochemistry Isotope Geochemistry Lode, S Piercey, SJ Cloutier, J Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
topic_facet |
Earth Sciences Geochemistry Isotope Geochemistry |
description |
Neodymium isotope data on exhalites and tuffs from the Cambrian Lemarchant volcanogenic massive sulphide (VMS) deposit provide insights into the tectonic environment of the Tally Pond group, Canada. New data from exhalites from the Lemarchant area show evolved values of εNd 513 = -6.0 to -1.8, whereas the associated volcanic rocks have εNd 513 of +0.4 to +1.4. The Lemarchant exhalite εNd compositions overlap the underlying Ganderian Neoproterozoic Sandy Brook Group (εNd t = -6.5 to -1.9) and Crippleback Intrusive Suite (εNd t = -5.9 to -5.2). The evolved Nd isotopic signatures suggest that the volcanic rocks of the Tally Pond group were formed upon Ganderian arc basement, which itself was possibly built upon, or proximal to, the Gondwanan Amazonian margin. Erosion of older crustal material and Tally Pond group volcanic rocks, together with coeval eruption of the volcanic rocks, released Nd-rich detritus into the water column. Uptake of eroded detrital and scavenged Nd resulted in mixed Nd sources (juvenile and evolved), which are archived in the exhalites. The results of this study are not only of significance for occurrences of exhalites within the Tally Pond group, but also have exploration implications for VMS districts globally. |
format |
Article in Journal/Newspaper |
author |
Lode, S Piercey, SJ Cloutier, J |
author_facet |
Lode, S Piercey, SJ Cloutier, J |
author_sort |
Lode, S |
title |
Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
title_short |
Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
title_full |
Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
title_fullStr |
Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
title_full_unstemmed |
Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry |
title_sort |
provenance of exhalites associated with the lemarchant volcanogenic massive sulphide (vms) deposit, central newfoundland, canada: insights from nd isotopes and lithogeochemistry |
publisher |
Geological Soc Publ House |
publishDate |
2017 |
url |
https://doi.org/10.1144/jgs2017-008 http://ecite.utas.edu.au/133522 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
http://ecite.utas.edu.au/133522/1/Lode et al 2017 (JGS)_Provenance of exhalites.pdf http://dx.doi.org/10.1144/jgs2017-008 Lode, S and Piercey, SJ and Cloutier, J, Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: Insights from Nd isotopes and lithogeochemistry, Journal of the Geological Society, 174, (6) pp. 954-967. ISSN 0016-7649 (2017) [Refereed Article] http://ecite.utas.edu.au/133522 |
op_doi |
https://doi.org/10.1144/jgs2017-008 |
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Journal of the Geological Society |
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174 |
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6 |
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954 |
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967 |
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1766109161613950976 |