AustralieFrV1, Main, Exploration, bibRecord, 008210

Modelling the giant, Zn-Pb-Ag Century deposit, Queensland, Australia

Identifieur interne : 008210 ( Main/Exploration ); précédent : 008209; suivant : 008211

Modelling the giant, Zn-Pb-Ag Century deposit, Queensland, Australia

Auteurs : L. Feltrin [Australie] ; J. G. Mclellan [Australie] ; N. H. S. Oliver [Australie]

Source :

Computers & geosciences [ 0098-3004 ] ; 2009.

RBID : Pascal:09-0121431

Descripteurs français

Pascal (Inist)
- Modèle numérique, Méthode différence finie, Siltstone, Ecoulement, Ordinateur, Minéralisation, Genèse, Elément métallique, Zonation, Faille, Shale, Problème inverse, Zone faillée, Métal base, Diagenèse, Traitement donnée, Modèle 3 dimensions, Zinc, Plomb, Argent, Remobilisation, Hydrodynamique, Distribution spatiale, Sulfure, Processus syntectonique, Queensland.
Wicri :
- topic : Ordinateur, Zinc, Plomb, Argent.

English descriptors

KwdEn :
- Queensland Australia, base metals, computers, data processing, diagenesis, fault zones, faults, finite difference analysis, flow, genesis, hydrodynamics, inverse problem, lead, metals, mineralization, numerical models, remobilization, shale, siltstone, silver, spatial distribution, sulfides, syntectonic processes, three-dimensional models, zinc, zoning.

Abstract

This paper presents a combination of geometric reconstructions of the Century Zn-Pb-Ag deposit, and finite-difference modelling of coupled deformation and fluid flow. Our intention is to demonstrate that these computer-based applications represent a new approach in testing ore genesis models. We use a "visiometric" approach, utilising GoCad 3D structural and property modelling. Computer visualisation is applied to reveal metal zonations, fault distributions and timing, stratigraphic influence on zoning, and the nature and extent of metal redistribution during basin evolution and deformation. We also examine possible links between fluid flow, deformation, and mass transfer using the numerical code FLAC3D. Numerical modelling results suggest that subsurface fluid flow during basin inversion is compartmentalised, being focussed within more permeable fault zones, thus accounting for the secondary redistribution of base metals identified using the 3D reconstructions. However, the results do not explain the broad metal zonation observed. Both the spatial and numerical models suggest that Century is syngenetic, with further diagenesis and deformation producing 1-100 m-scale (re)mobilisation.

Affiliations:

Australie

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Le document en format XML

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<front><div type="abstract" xml:lang="en">This paper presents a combination of geometric reconstructions of the Century Zn-Pb-Ag deposit, and finite-difference modelling of coupled deformation and fluid flow. Our intention is to demonstrate that these computer-based applications represent a new approach in testing ore genesis models. We use a "visiometric" approach, utilising GoCad 3D structural and property modelling. Computer visualisation is applied to reveal metal zonations, fault distributions and timing, stratigraphic influence on zoning, and the nature and extent of metal redistribution during basin evolution and deformation. We also examine possible links between fluid flow, deformation, and mass transfer using the numerical code FLAC3D. Numerical modelling results suggest that subsurface fluid flow during basin inversion is compartmentalised, being focussed within more permeable fault zones, thus accounting for the secondary redistribution of base metals identified using the 3D reconstructions. However, the results do not explain the broad metal zonation observed. Both the spatial and numerical models suggest that Century is syngenetic, with further diagenesis and deformation producing 1-100 m-scale (re)mobilisation.</div>
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Modelling the giant, Zn-Pb-Ag Century deposit, Queensland, Australia

Modelling the giant, Zn-Pb-Ag Century deposit, Queensland, Australia

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri