Uranium ore-forming systems of the - Geoscience Australia
Uranium ore-forming systems of the - Geoscience Australia
Uranium ore-forming systems of the - Geoscience Australia
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<strong>Uranium</strong> <strong>ore</strong>-<strong>forming</strong> <strong>systems</strong> <strong>of</strong> <strong>the</strong> Lake Frome regionFigure 1.4: Basin- and surface-related uranium mineral <strong>systems</strong>, during <strong>the</strong> extensional stage <strong>of</strong> basindevelopment. A range <strong>of</strong> uranium depositional sites and deposit styles are represented in this basinscalediagrammatic section. Source: Skirrow et al. (2009).To apply <strong>the</strong> mineral <strong>systems</strong> approach to uranium in <strong>the</strong> Lake Frome region we first present a‘straw man’ model <strong>of</strong> basin-related uranium mineral <strong>systems</strong> in Figure 1.6, using <strong>the</strong> template <strong>of</strong>Figure 1.2. This ‘straw man’ is based on published deposit and regional geological data. Implicitin this diagram is <strong>the</strong> concept <strong>of</strong> multiple working hypo<strong>the</strong>ses for <strong>the</strong> formation <strong>of</strong> uraniummineralisation in <strong>the</strong> Lake Frome region. For example, multiple possible energy sources areincluded for completeness. The study aims to identify and map <strong>the</strong> geological ‘proxies’ (i.e.,observable geological features) for each <strong>of</strong> <strong>the</strong> mineral system components: sources, permeabilityarchitecture, energy, and depositional gradients.Page 7 <strong>of</strong> 151
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