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Ranee Joshi

PhD student
School of Earth Sciences - Centre for Exploration Targeting

Contact details

Address
Robert Street Building, Rm 204
Centre for Exploration Targeting (CET)
School of Earth Sciences
The University of Western Australia (M006)
35 Stirling Highway
CRAWLEY WA 6009

Email
Ranee.Joshi@research.uwa.edu.au

Ranee hails from the Philippines where she obtained her bachelor’s degree in geology at the University of the Philippines-Diliman. She then joined the minerals industry where she gained significant experience with GIS data analysis, 3D geologic modeling, basic geostatistics and resource estimation. Ranee qualified for the EMerald Erasmus Mundus Master in Georesources Engineering, a two-year Masters program organized by a consortium of 4 universities: University of Liège, Université de Lorraine, Luleå Tekniska Universitet and Technische Universität Bergakademie Freiberg.  Her Masters research was on the 3D geological and geochemical modeling of the Maverick uranium deposit, Moore Lakes Project, Athabasca Basin, Saskatchewan, Canada under the supervision of Prof. Irvine R. Annesley with École Nationale Supérieure de Géologie and GeoRessources of the Université de Lorraine, Nancy, France.

Ranee joined the Centre for Exploration Targeting as a PhD candidate in January 2019 under the supervision of Prof. Mark Jessell, Prof. Mark Lindsay, Prof. Nicolas Thebaud and Dr. Tim Ivanic (the Geological Survey of Western Australia). Her Phd project is entitled “Multi-scale 3D geological modelling of the Yalgoo-Singleton Greenstone Belt using the Loop Platform” which is a project of collaboration between two major new geoscience consortia: the Loop OneGeology consortium and the Australian Research Council. 

Currently, 3D geological models are built at a predetermined scale which is appropriate for the original purpose. However, this original scale is not always optimal for other purposes, which are often sought once the model is finalized with applications at smaller scales (such as resource evaluations) or larger, such as greenfields exploration. This projects aims to develop technique that allow multiscale 3D models to be constructed in order to reveals features at scales of observation optimal to the required purpose. In order to fulfill its purpose, the main research questions being addressed are:
a) how many scales to model and upscale/downscale;
b) which scales to focus on
c) how to best construct models to maintain consistency across scales; and
d) handling of variance and uncertainty of a multi-scale model

The location for this research will be the highly mineralized and largely heterogeneous deformed Yalgoo–Singleton greenstone belt, western Youanmi Terrane, Yilgarn Craton. The region is well-represented by 1:100k digital mapping conducted by the Geological Survey of Western Australia. The model aims to accurately update the existing stratigraphic and structural framework and enhanced datasets for geochronology and geochemistry. This output should provide a better 3D understanding of the different mineralization styles and structural history. The model must provide information for multiple purposes and take advantage of the full value of the data available.

The outcome of this research will pioneer multi-scale geological modeling in the mineral industry, changing the 3D geological modeling standards in the industry and contribute to developing the next generation of 3D geological modeling tools.