Shallowly buried, Cambrian stratabound base metal deposits of Mississippi Valley type, that might be associated with large throw old fault structures running along the western side of the Flinders Ranges, were sought by carrying out a varied programme of seismic refraction, gravity and ground magnetic surveys, regional and detailed stream sediment sampling, geological mapping, soil / groundwater / rock chip and mercury halo sampling, and rotary / percussion drilling (14 holes, total 3669 feet). Geophysical and geochemical anomalies noted along the Ediacara and Norwest faultlines, and nearby at Nilpena and Ideyaka, were investigated in the field, but did not disclose significant mineralisation. Deep rotary percussion drilling of the downthrown western block of the Ediacara Fault, near the historic Ediacara Range silver-lead workings but on the opposite, eastern side block, aimed to intersect an un-eroded sequence of host Lower Cambrian dolomite carrying a similar but larger orebody: instead, it failed to encounter the target Cambrian section, with the single 950 foot deep hole passing directly from Cainozoic sediments into Adelaidean basement rocks. The drilling emphasis was then switched to testing for secondary base metal mineralisation in eastern fault block areas of the Cambrian Ediacara Sub-basin, adjacent to known occurrences. A variably but sub-economic lead and copper enriched, slump brecciated and palaeo-leached cavernous zone was found at the base of the target Ajax Limestone dolomitised interval; however, nowhere in the vicinity of the fault was it as well-preserved or shallow as on the northwestern side of the sub-basin within the presumed Tertiary uplifted Ediacara Range, where the past mining activity had been centred.