Integrated 3D Geological Models
3D models built from drillholes, mapping, structural data, geophysics, geochemistry and Geological Interpretation.
Exploration Geology · 3D Geological Modelling
Dr. Gemma Mitjanas
Exploration Geologist and 3D Geological Modeller creating integrated 3D Targeting Models for mining and High‑Enthalpy Geothermal projects.
Fault Rocks Inc Associate — Go to Fault Rocks Inc page
- 3D Geological Modelling
- 3D Targeting Models
- Structural Geology
- Geophysical Interpretation
- Geochemical Integration
Core Capabilities
A concise overview of the technical work I bring to exploration and modelling projects.
3D Targeting Models
Targeting-focused 3D models that test geological hypotheses, integrate exploration vectors and support Model-Driven Discovery.
High‑Enthalpy Geothermal
Conceptual modelling and structural interpretation of fault-controlled geothermal systems.
Professional Profile
This portfolio summarises my work as an Exploration Geologist and 3D Geological Modeller, focused on integrated subsurface interpretation for Mineral Systems and High‑Enthalpy Geothermal projects.
With a strong background in Structural Geology, fault and fracture controls on fluid flow, Exploration Geophysics and Geochemical Integration, I build 3D Geological Models and 3D Targeting Models that turn complex exploration datasets into practical frameworks for decision-making, from regional-scale studies to local target models.
I work closely with clients to understand their geological interpretation, project objectives and exploration questions, and translate that knowledge into clear, usable 3D models. At the same time, I bring my own technical experience to refine geological hypotheses, integrate multidisciplinary datasets and support model-driven exploration. When required, I can also provide in-house modelling support, helping teams develop models faster while transferring practical modelling workflows and know-how.
Since 2024, I have worked as a consultant through Fault Rocks Inc, the main company I collaborate with for mining projects. This has allowed me to expand my modelling experience significantly, including an intensive period of work across more than 10 projects of different deposit typologies and exploration scales (10 projects this last year).
My previous experience in geothermal systems has evolved naturally into the mining sector, where my knowledge of Structural Geology, fluid flow and subsurface architecture supports the interpretation of mineralising systems and exploration targets.
- Exploration Geologist
- MSc in Exploration Geophysics
- PhD in Structural Controls on Fluid Flow
- Postdoctoral Research in Regional 3D Models for Mineral Systems
Software Stack
Applied software experience used across Geological Modelling, Geochemical Interpretation and 3D visualisation workflows.
Leapfrog Geo
Implicit 3D Geological Modelling, surfaces, domains, drillhole integration and exploration model updates.
ioGas
Geochemical Interpretation, multivariate analysis and integration of geochemical vectors into Geological Models.
Geoscience Analyst
3D Visualisation and communication of geological, geophysical and exploration datasets.
What I Bring to a Project
My focus is to turn complex exploration datasets into practical 3D Geological Models that support interpretation, targeting and decision-making.
From Datasets to Geological Models
Combining drillhole, mapping, geophysical and geochemical information into coherent 3D geological frameworks.
Structural Control and Geometry
Interpreting structures, geological architecture and mineralised domains in a way that is useful for exploration teams, supported by PhD experience on fault and fracture controls on fluid flow.
3D Targeting Models
Building 3D Targeting Models that help test geological hypotheses, communicate uncertainty and support exploration decisions.
Integrated Geological Interpretation, 3D Geological Modelling and 3D Targeting for exploration-focused decision making.
Portfolio Map | 2025–2026
Approximate regional locations of selected portfolio experience involving Dr. Gemma Mitjanas. Mining-related locations reflect work carried out through Fault Rocks Inc., from regional studies to local 3D Targeting Models and from major companies to junior explorers. Research-focused and geothermal locations are shown separately. Locations are approximate and shown by region and typology.
VMS / polymetallic
Porphyry Cu-Mo
Supergene-enriched porphyry
Orogenic Au vein systems
Epithermal Au-Ag
Regional Mineral Systems study
Cu-Au-Ag system
Research-focused / geothermal
Click a circle to see the approximate region and typology. Mining-related locations reflect work carried out through Fault Rocks Inc. Areas are intentionally broad, the map does not represent the full Fault Rocks project portfolio.
Fault Rocks Inc and Associated Companies
Professional roles supporting mining projects, Software Training and applied Geological Modelling. Fault Rocks is Gemma’s main mining consultancy platform.
Mining Consultancy
Lead 3D Modelling Associate for Fault Rocks
Gemma works for Fault Rocks Inc as the lead 3D Geological Modelling associate for selected mining assignments.
Fault Rocks Inc is a Canadian Structural Geology consultancy led by Dr. Matias Sanchez, specializing in Structural Geology, Geophysical Interpretation, remote sensing and Mineral Systems thinking for exploration targeting.
Within Fault Rocks projects, Gemma focuses on building integrated 3D Geological Models from structural interpretation, geophysical data, geological datasets and exploration constraints.
Fault Rocks supports major mining companies, junior explorers and research institutions globally, with Dr. Sanchez bringing more than 20 years of mineral exploration experience and leadership across more than 80 consulting projects.
Mining enquiries: gemma@faultrocks.com
Software Training
Seequent Associate for Leapfrog Training
Gemma is a Seequent associate for Leapfrog training, with applied experience in Leapfrog Geo and geophysical workflows including Oasis montaj.
This supports practical training and applied modelling workflows for technical teams.
Academic Background and Selected Publications
Research background connecting Structural Geology, Geophysics, Geothermal Systems and Regional Mineral Systems Modelling.
Geothermal Systems and Structural Complexity
Mitjanas, G., Walsh, J. J., Roca, E., Alías, G., Queralt, P., Ledo, J., & Piña-Varas, P. (2024). The importance of structural complexity in the localization of geothermal systems: A case study along the Vallès-Penedès Fault in the Catalan Coastal Ranges (NE Spain). Geothermics, 116, 102855.
Integrated Geophysical Interpretation
Mitjanas, G., Ledo, J., Macau, A., Alías, G., Queralt, P., Bellmunt, F., ... & Figueras, S. (2021). Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain). Geothermics, 93, 102067.
Regional Mineral Systems Modelling
Mitjanas, G., & Micklethwaite, S. (2025). From Fold to Gold: Reinterpretation, 3D visualisation and Mineral Systems analysis of Pine Creek, Northern Territory (NTGS Record 2025-005). Northern Territory Geological Survey.
Geothermal Prospectivity Report
Beardsmore, G., & Mitjanas, G. (2024). Prospectivity for geothermal power generation in the Northern Territory (NTGS Report 23). Northern Territory Geological Survey. GIS version: ESRI SHP, 06/11/2024.
Training and Teaching
Teaching and specialised training for geoscientists, students and technical teams, focused on Geological Modelling, hydrogeology, geophysical exploration and subsurface workflows.
Master in Hydrogeology and Modelling
Teaching contribution focused on Geological Modelling.
Executive Master in CO₂ Recovery
Teaching geophysical exploration and electrical methods within the CO₂ recovery master.
Bothroi Project
Interactive training project for exploration courses, turning exploration and targeting into a competition. Participants learn to integrate geological, geophysical and geochemical datasets into exploration decisions and 3D modelling workflows. Developed jointly with Dr. Diego Dominguez‑Carretero.
Contact
For modelling, training, conference follow-up or technical enquiries: