Authors / CoAuthors
Huston, D. | Doublier, M. | Eglington, B. | Pehrsson, S. | Mercier-Langevin, P. | Piercey, S.
Abstract
Over 900 Australian mineral deposits, location and age data, combined with deposit classifications, have been used to assess temporal and spatial patterns of mineral deposits associated with convergent margins and allow assessment of the potential of poorly exposed or undercover mineral provinces and identification of prospective tracts within known mineral provinces. Here we present results of this analysis for the Eastern Goldfields Superterrane and the Tasman Element, which illustrate end-members of the spectrum of convergent margin metallogenic provinces. Combining our Australian synthesis with global data suggest that after ~3000 Ma these provinces are characterised by a reasonably consistent temporal pattern of deposit formation, termed the convergent margin metallogenic cycle (CMMC): volcanic-hosted massive sulfide – calc-alkalic porphyry copper – komatiite-associated nickel sulfide → orogenic gold → alkalic porphyry copper – granite-related rare metal (Sn, W and Mo) – pegmatite. Between ca 3000 Ma and ca 800 Ma, virtually all provinces are characterised by a single CMMC, but after ca 800 Ma, provinces mostly have multiple CMMCs. We interpret this change in metallogeny to reflect secular changes in tectonic style, with single-CMMC provinces associated with warm, shallow break-off subduction, and multiple-CMMC provinces associated with modern-style cold, deep break-off subduction. These temporal and spatial patterns can be used to infer potential for mineralisation outside well-established metallogenic tracts. <b>Citation:</b> Huston D. L., Doublier M. P., Eglington B., Pehrsson S., Mercier-Langevin P. & Piercey S., 2022. Convergent margin metallogenic cycling in the Eastern Goldfields Superterrane and Tasman Element. In: Czarnota, K. (ed.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, https://dx.doi.org/10.26186/147037
Product Type
document
eCat Id
147037
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
- Contact instructions
- MEG
Resource provider
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
-
- metallogenesis
-
- secular tectonics
-
- mineral systems
-
- global age compilation
-
- EFTF
-
- Exploring For The Future
-
- Australia's Resources Framework
-
- Published_External
Publication Date
2022-08-07T23:01:41
Creation Date
2022-07-21T09:43:00
Security Constraints
Legal Constraints
Status
accepted
Purpose
global compilation of age constraints from mineral provinces
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
global compilation of age constraints from mineral provinces
Parent Information
Extents
[-48.1011, 22.4212, -34.1989, 322.9465]
Reference System
Spatial Resolution
Service Information
Associations
Source Information