The University of Southampton
University of Southampton Institutional Repository

Sm-Nd dating of the giant Sullivan Pb-Zn-Ag deposit, British Columbia

Sm-Nd dating of the giant Sullivan Pb-Zn-Ag deposit, British Columbia
Sm-Nd dating of the giant Sullivan Pb-Zn-Ag deposit, British Columbia
We report here Sm and Nd isotope data for hydrothermal tourmalinites and sulfide ores from the giant Sullivan Pb-Zn-Ag deposit, which occurs in the lower part of the Mesoproterozoic Purcell (Belt) Supergroup. Whole-rock samples of quartz-tourmaline tourmalinite from the footwall alteration pipe yield a Sm-Nd isochron age of 1470 ± 59 Ma, recording synsedimentary B metasomatism of clastic sediments during early evolution of the Sullivan hydrothermal system. Data for variably altered (chloritized and/or albitized) tourmalinites from the hanging wall of the deposit, which are believed to have formed originally ca. 1470 Ma, define a younger 1076 ± 77 Ma isochron because of resetting of Sm and Nd isotopes during Grenvillian metamorphism. HCl leachates of bedded Pb-Zn ore yield a Sm-Nd isochron age of 1451 ± 46 Ma, which is consistent with syngenetic-exhalative mineralization ca. 1470 Ma; this age could also reflect a slightly younger, epigenetic hydrothermal event. Results obtained for the Sullivan deposit indicate that the Sm-Nd geochronometer has the potential to directly date mineralization and alteration in stratabound sulfide deposits that are not amenable to dating by other isotope methods.
0091-7613
751-754
Jiang, S.Y.
db520e8d-3fbd-4eb6-b5fe-ae85f429bcc5
Slack, J.F.
1903534a-603d-4fd8-afa0-5459e1d44a39
Palmer, M.R.
d2e60e81-5d6e-4ddb-a243-602537286080
Jiang, S.Y.
db520e8d-3fbd-4eb6-b5fe-ae85f429bcc5
Slack, J.F.
1903534a-603d-4fd8-afa0-5459e1d44a39
Palmer, M.R.
d2e60e81-5d6e-4ddb-a243-602537286080

Jiang, S.Y., Slack, J.F. and Palmer, M.R. (2000) Sm-Nd dating of the giant Sullivan Pb-Zn-Ag deposit, British Columbia. Geology, 28 (8), 751-754. (doi:10.1130/0091-7613(2000)028<0751:SNDOTG>2.3.CO;2).

Record type: Article

Abstract

We report here Sm and Nd isotope data for hydrothermal tourmalinites and sulfide ores from the giant Sullivan Pb-Zn-Ag deposit, which occurs in the lower part of the Mesoproterozoic Purcell (Belt) Supergroup. Whole-rock samples of quartz-tourmaline tourmalinite from the footwall alteration pipe yield a Sm-Nd isochron age of 1470 ± 59 Ma, recording synsedimentary B metasomatism of clastic sediments during early evolution of the Sullivan hydrothermal system. Data for variably altered (chloritized and/or albitized) tourmalinites from the hanging wall of the deposit, which are believed to have formed originally ca. 1470 Ma, define a younger 1076 ± 77 Ma isochron because of resetting of Sm and Nd isotopes during Grenvillian metamorphism. HCl leachates of bedded Pb-Zn ore yield a Sm-Nd isochron age of 1451 ± 46 Ma, which is consistent with syngenetic-exhalative mineralization ca. 1470 Ma; this age could also reflect a slightly younger, epigenetic hydrothermal event. Results obtained for the Sullivan deposit indicate that the Sm-Nd geochronometer has the potential to directly date mineralization and alteration in stratabound sulfide deposits that are not amenable to dating by other isotope methods.

Full text not available from this repository.

More information

Published date: 2000

Identifiers

Local EPrints ID: 1375
URI: https://eprints.soton.ac.uk/id/eprint/1375
ISSN: 0091-7613
PURE UUID: 6e431f0c-ddda-45f4-8d0a-502bfc00f2e4

Catalogue record

Date deposited: 06 May 2004
Last modified: 15 Jul 2019 19:39

Export record

Altmetrics

Contributors

Author: S.Y. Jiang
Author: J.F. Slack
Author: M.R. Palmer

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×