Skip to content

Research at St Andrews

Provenance of exhalites associated with the Lemarchant volcanogenic massive sulphide (VMS) deposit, central Newfoundland, Canada: insights from Nd isotopes and lithogeochemistry

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Author(s)

Stefanie Lode, Stephen J. Piercey, Jonathan Cloutier

Abstract

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 εNd513 = 6.0 to 1.8, whereas the associated volcanic rocks have εNd513 of +0.4 to +1.4. The Lemarchant exhalite εNd compositions overlap the underlying Ganderian Neoproterozoic Sandy Brook Group (εNdt = 6.5 to 1.9) and Crippleback Intrusive Suite (εNdt = 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 of significance not only for occurrences of exhalites within the Tally Pond group, but also have exploration implications for VMS districts globally.
Close

Details

Original languageEnglish
Pages (from-to)954-967
Number of pages14
JournalJournal of the Geological Society
Volume174
Issue number6
Early online date11 Jul 2017
DOIs
StatePublished - Nov 2017

    Research areas

  • Lemarchant deposit, VMS deposit, Nd isotopes, Lithogeochemistry, Newfoundland

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Lithostratigraphic and structural reconstruction of the Zn-Pb-Cu-Ag-Au Lemarchant volcanogenic massive sulphide (VMS) deposit, Tally Pond group, central Newfoundland, Canada

    Cloutier, J., Piercey, S. J., Lode, S., Vande Gutche, M. & Copeland, D. A. Apr 2017 In : Ore Geology Reviews. 84, p. 154-173

    Research output: Contribution to journalArticle

  2. Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada

    Lode, S., Piercey, S. J., Layne, G. D., Piercey, G. & Cloutier, J. Jan 2017 In : Mineralium Deposita. 52, 1, p. 105-128 24 p.

    Research output: Contribution to journalArticle

  3. Styles, textural evolution, and sulfur isotope systematics of Cu-rich sulfides from the Cambrian Whalesback volcanogenic massive sulfide deposit, central Newfoundland, Canada

    Cloutier, J., Piercey, S. J., Layne, G., Heslop, J., Hussey, A. & Piercey, G. Aug 2015 In : Economic Geology. 110, 5, p. 1215-1234

    Research output: Contribution to journalArticle

  4. High Grade Au Deposits: Processes to Prediction

    Walshe, J. L., Bath, A. A., Cloutier, J. & Hough, R. M. 2014 Perth: Geological Survey of Western Australia. 192 p.

    Research output: Book/ReportOther report

Related by journal

  1. Journal of the Geological Society (Journal)

    G Ian Alsop (Editor)
    2004 → …

    Activity: Publication peer-review and editorial workEditor of research journal

Related by journal

  1. Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland

    Parnell, J., Bowden, S. & Mark, D. Jan 2018 In : Journal of the Geological Society. 175, 1, p. 33-43 11 p.

    Research output: Contribution to journalArticle

  2. Quantitative dating of pleistocene deposits of the Kyrenia range, Northern Cyprus: implications for timing, rates of uplift and driving mechanisms

    Palamakumbura, R. N., Robertson, A. H. F., Kinnaird, T. C., van Calsteren, P., Kroon, D. & Tait, J. A. 1 Nov 2016 In : Journal of the Geological Society. 173, 6, p. 933-948 16 p.

    Research output: Contribution to journalArticle

  3. The Palaeoproterozoic global carbon cycle: insights from the Loch Maree Group, NW Scotland

    Kerr, G. B., Prave, A. R., Martin, A. P., Fallick, A. E., Brasier, A. T. & Park, R. G. Jan 2016 In : Journal of the Geological Society. 173, 1, p. 170-176 7 p.

    Research output: Contribution to journalArticle

  4. Distinguishing diapirs from inflated plutons: an integrated rock magnetic fabric and structural study on the Roundstone Pluton, western Ireland

    McCarthy, W., Petronis, M. S., Reavy, R. J. & Stevenson, C. T. Sep 2015 In : Journal of the Geological Society. 172, 5, p. 550-565 16 p.

    Research output: Contribution to journalArticle

ID: 250559522