Chemical sedimentation and facies relationships in the Karinga Creek palaeo-drainage system, Amadeus Basin, Northern Territory

Chemical deposition of carbonate, evaporite and silica/silicate materials has been continuous in the groundwater and overlying hydrologic zones, with the type and extent of mineralisation controlled largely by evaporative concentration of pore solutions, salt recycling and sediment-water interactions. The correlation of field and laboratory data from playas of the Karinga Creek palaeo-drainage indicate that the craton segregation due to precipitation of authigenic minerals commonly results in significant elemental complexity down-drainage in the playa brines. -from Authors