Exploration for possible roll-front style sedimentary uranium deposits within buried Tertiary sediments on the plains east of Lake Frome has focussed on an area near Lake Yalkalpo, where in 1972 Chevron Exploration found indications of low grade...

Three holes totalling 305 metres were drilled. Two holes penetrated Cretaceous basement at 80-81 metres, overlain by Murnpeowie Formation. No significant features or anomalous radioactivity was detected.