An area on southern Yorke Peninsula, located 5-15 km north-west of Yorketown, was targeted for possible buried Moonta - type Cu(Mo,Au) mineralisation, on the basis of recently SADME-recognised dissolved trace heavy metal anomalism (Cu, Ag and Ba) in the local groundwater, a finding which Aberfoyle regarded as being of particular interest because it lies adjacent to a discrete, untested aeromagnetic anomaly. Initial work by Aberfoyle comprised reconnaissance and detailed groundwater hydrochemistry surveys (sampling 15 and 73 bores respectively). The results of these surveys were inconclusive. Therefore it was decided to further define the spatial character of the magnetic anomaly, and 7 traverses of ground magnetics totalling 53.6 line km were acquired at 50 m station intervals. Geophysical modelling of the new magnetic data suggested that the primary anomaly is due to two sources, variously originating at between 300 m and 1500 m below the surface. It was considered that the shallower magnetic source might be of interest, if it lay within postulated Cambrian sediments, and so a small seismic refraction survey was next performed, to determine the thickness of Permian strata present above such an objective. The seismic survey results indicated that ?Archaean metamorphic or Cambrian carbonate basement rocks lie beneath relatively flat-lying Quaternary, ?Tertiary and Permian sediments, at an interpreted depth of between 337 m and 378 m below surface, heading southwards along the 2300 m long north-south profile shot by contractor SADME. In view of the deep drilling required to test the pre-Permian magnetic source, the equivocal associated geochemical anomalism, and the strong chance that a drillhole would encounter poorly mineralised Cambrian carbonate or Lincoln Complex gneiss lithologies, it was decided to abandon the prospect.