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Processes of ore formation in the stratiform sediment-hosted Zn-Pb deposits of Northern Australia: testing the Century model
Citation
Cooke, DR and Bull, SW and Large, RR, Processes of ore formation in the stratiform sediment-hosted Zn-Pb deposits of Northern Australia: testing the Century model, Journal of Geochemical Exploration, 78-79 pp. 519-524. ISSN 0375-6742 (2003) [Refereed Article]
DOI: doi:10.1016/S0375-6742(03)00074-8
Abstract
Numerical simulations of chemical processes of ore formation are used to test hypotheses concerning the genesis of northern Australian Proterozoic stratiform sediment-hosted Zn-Pb deposits. Exhalation of metal-bearing brines into anoxic marine waters is shown to be effective for massive sulfide ore formation. The 'Century' model, late diagenetic massive sulfide deposition involving metal-laden brines interacting with hydrocarbon reservoirs, is also demonstrated to have potential as an ore-forming process. It requires that H2S(g) is available in the gas reservoir and that acidification is prevented by dissolution of wall rock carbonate. Seawater mixing is capable of producing laminated sulfide ore. Brine-sour gas interaction will most likely produce discordant Zn-Pb ore due to carbonate dissolution. © 2003 Elsevier Science B.V. All rights reserved.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Earth Sciences |
| Research Group: | Geochemistry |
| Research Field: | Exploration Geochemistry |
| Objective Division: | Mineral Resources (excl. Energy Resources) |
| Objective Group: | Other Mineral Resources (excl. Energy Resources) |
| Objective Field: | Mineral Resources (excl. Energy Resources) not elsewhere classified |
| Author: | Cooke, DR (Professor David Cooke) |
| Author: | Bull, SW (Dr Stuart Bull) |
| Author: | Large, RR (Professor Ross Large) |
| ID Code: | 27916 |
| Year Published: | 2003 |
| Web of Science® Times Cited: | 9 |
| Deposited By: | Centre for Ore Deposit Research - CODES CoE |
| Deposited On: | 2003-08-01 |
| Last Modified: | 2011-11-07 |
| Downloads: | 0 |
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