Higher Degree by Research Application Portal

TitleControls on the orderly distribution of giant deposits in self-organized mineral systems: new predictive criteria and analytical tools
SupervisorDr Nicolas Thebaud
CourseDoctor of Philosophy
KeywordsMineral system, periodicity, targeting, structure, self-organisation, geodynamics, lithospheric fault
Research areaEarth Sciences
Project description

The project aims to combine advanced spatial analytical techniques for emergent pattern recurrence with dynamic non-linear system models, to deliver improved mineral system models and tools for mineral exploration and targeting, focussing on camp-scale. Fundamentally, this project will test two hypotheses:

1.      “The distribution of giant ore deposits is more ordered than for small deposits” and therefore inherently more predictable. 

And

2)    “Higher degrees of ordering result from greater system self-organization”.

Research questions to address include:

·         Does regular spacing emerge only for large deposits or does it emerge proportionally for a range of deposit size classes, as expected for a multifractal system?

·         Why do some well-endowed and well-explored belts have periodic patterns where others don’t?

·         Is spatial periodicity an emergent and/or inherited system pattern? If both, which settings are optimal for formation of giants?

·         Do controls on spatial periodicity differ for different mineral systems (e.g. magmatic Ni, Cu, Au)?

·         Can spatial periodicity in immature / early mover belts be predicted from other map proxies?

·         Can spatial analytical techniques find useful map proxies for endowment patterns, system organization, order, and entropy?

Approaches: A threefold approach is proposed combining: (a) spatial analyses of pattern complexity and order, (b) 3D computational modelling and simulation of fluid flow patterns, investigating the interdependencies leading to self-organization of mineral systems, and (c) field validation.

These approaches balances data-driven analyses with conceptual hypothesis testing and would differ from many previous studies by embracing advanced systems thinking. New techniques for quantifying and mapping system entropy, network nodes, order and multifractal dimensions will be tested. A key aspect will be to apply Takens’ theorem, which holds that the behaviour of every component of the system is encoded in the behaviour of all others, to seek useful map proxies for system behaviour.

Opportunity statusOpen
Open date01 Jun 2025
Close date22 Aug 2025
Funding source

Strategic Energy Resources together with UWA scholarship.

SchoolGraduate Research School
Contact

Dr. Nico Thebaud

nicolas.thebaud@uwa.edu.au

Specific project requirement

PhD candidate needs strengths in multi-scale structural interpretation as well as advanced mathematic skills in order to familiar with numeric modelling and dynamic systems thinking. Pre-existing experience in numerical modelling will be a great advantage

Additional information

Supervision will be conducted by Nico Thebaud, Nick Hayward, Alison Ord and Bruce Hobbs.

Course typeDoctorates
Description

The Doctor of Philosophy (PhD) is a program of independent, supervised research that is assessed solely on the basis of a thesis, sometimes including a creative work component, that is examined externally. The work presented for a PhD must be a substantial and original contribution to scholarship, demonstrating mastery of the subject of interest as well as an advance in that field of knowledge. 

Visit the course webpage for full details of this course including admission requirements, course rules and the relevant CRICOS code/s.

Duration4 years

Guidance

Strategic Energy Resources desire Australia focus with global context, covering both Au and base-metals. This is an opportunity to contrast diverse systems: e.g. Greenstone vs slate belt Au. Porphyry v IOCG CuAu v komatiite Ni v LCT pegmatite. Focus areas for deep dives to include the world class Carpentaria Sed Cu/Zn-Pb-Ag and IOCG plus Olympic Subprovince IOCG.

Directly contact Dr Nico Thebaud at nicolas.thebaud@uwa.edu.au 

From now.

Undergrad with honours, or Msc graduate, in geosciences preferably with a strong numerical profile.

Geosciences related to mineral exploration including: survey geoscientist, data geoscientist, industry exploration geoscientist, academic.