Trefry, M.G., and Townley, L.R. (1991), Three-dimensional modelling of groundwater flow through the Koongarra uranium orebody, Northern Territory, International Hydrology and Water Resources Symposium 1991, Perth, 2-4 October, Volume 3, 623-624.

Groundwater movement near the Koongarra No. 1 orebody occurs as fracture flow in significant shear zones, such as the Koongarra fault, as well as in smaller cracks sub-parallel to the plane of the fault. Over a period of up to two million years, it is believed that groundwater flow has resulted in oxidising conditions which have allowed uranium to be transported from a uranium silicate zone to form a uranium phosphate zone in the weathered zone. A dispersion fan several hundred metres in length is currently being used by participants in the Alligator Rivers Analogue Project as an analogue of leakage from a high level radioactive waste repository. This paper describes efforts to calculate three-dimensional flow paths in a complex environment of fractured rock.

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