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Highlights
Constellation Resources uncovers structural and geochemical support for natural hydrogen system
Seismic reprocessing confirms deep organic-rich formations across Edmund-Collier Basin
Soil gas survey and regulatory planning underway for further hydrogen exploration
Constellation Resources Ltd (ASX:CR1), listed on the All Ordinaries, has advanced its efforts in clean energy minerals with new geological findings across the Edmund-Collier Basin in Western Australia. The company’s focus on natural hydrogen exploration has been reinforced by updated seismic interpretations and organic carbon sampling results.
The Edmund-Collier Project spans a vast area and remains largely untested at depth, positioning it as a novel frontier in the evolving landscape of natural hydrogen development.
Seismic Interpretation Confirms Organic-Rich Formations and Structural Depth
The project’s data reprocessing campaign has resulted in a clearer picture of subsurface structures and stratigraphy. Reprocessed seismic line 10GA-CP2, acquired by national geological bodies, enabled updated basin-wide interpretations.
Key geological targets including the Blue Billy and Discovery Formations have been mapped with increased confidence. These formations display considerable thickness and are rich in organic matter, laying the groundwork for future hydrogen generation. Maximum interpreted depths within the Wanna Syncline exceed four kilometres, placing critical formations in the thermal window suitable for hydrogen release.
Fault Structures Present Migration Pathways for Gas Movement
Structural elements such as the Godfrey and Talga Faults were identified in the reprocessed seismic imagery. These major fault systems span from the basin basement to the surface and are likely conduits for gas migration. Their presence offers viable sampling targets for surface-level soil gas detection.
The structural and stratigraphic ensemble — including mature source rocks, seal integrity, and potential traps — collectively outlines the architecture of a functioning natural hydrogen system.
Organic Carbon Results Validate Hydrogen Source Potential
Total Organic Carbon (TOC) results from several drill holes confirm the presence of shales suitable for thermogenic hydrogen generation. The Discovery Formation, among others, returned high TOC readings across various intervals, indicating strong capacity for hydrogen production under elevated temperatures.
Studies have shown that such formations, once buried and heated within a certain thermal range, can emit hydrogen as a byproduct of organic degradation. The Edmund-Collier Basin, with its structural depth and geochemical profile, fits these conditions based on current data.
Porosity Indicators Support Reservoir Viability
Preliminary porosity analysis of multiple formations revealed locally high values, especially within the Kiangi Creek and Discovery Formations. These results suggest capacity for gas accumulation and storage — a crucial component of any hydrogen system.
Although the porosity distribution is varied, the findings provide initial confirmation of reservoir potential. The next phase will involve further sampling to refine the understanding of rock properties and connectivity across the basin.
Next Steps for Exploration and Regulatory Progression
Constellation Resources is now preparing a basin-wide soil gas survey to detect hydrogen and helium microseepage. This survey will be followed by deep drilling initiatives designed to validate subsurface hydrogen concentrations and migration pathways.
In parallel, the company is progressing with native title and regulatory steps to transition its current applications into Petroleum Exploration Permit tenure, enabling more advanced exploration activities to proceed.
