The GOMA basement drilling program was named after the Gawler-Officer-Musgrave-Amadeus deep seismic reflection survey line, that was completed in 2008 by Geoscience Australia (GA) as part of its Onshore Energy Security Program. Funding for the seismic line had been provided by PIRSA in association with GA and AuScope (under the National Collaborative Research Infrastructure Strategy). It formed a significant part of the Australian Research Council's Linkage Grant collaborative work managed between PIRSA staff and academic researchers from both Monash and Adelaide Universities, which is entitled "Unearthing the marginal terrains of the South Australian Craton: keystone of Proterozoic Australia" (Project LP0882000). The aim of the subject follow-up drilling program, conducted in the under-explored Nawa Domain of the Gawler Craton, in the Far North of South Australia, was to provide subsurface geological, geochemical and petrophysical information for qualifying ongoing research into the seismic line data, by collecting as much diamond core cut from deeply buried, fresh, Mesoproterozoic or older basement as might be reasonably achievable.The program design catered for up to seven holes targeting basement highs in the region. Only four holes were ultimately drilled, because of higher than expected drilling costs and funding restrictions. The drilling commenced in early September 2009, and took two months to complete. GOMA DH1 targeted the Karari Fault zone between the Coober Pedy and the Mabel Creek blocks. Rotary mud drilling reached a depth of 265.9 m before blade refusal occurred within a granite-gneiss. The hole was then cased, and NQ coring commenced. A [glacial megaclast / ?dropstone of] granitic orthogneiss was cored for 0.3 m before the hole re-entered a fine-grained Permian diamictite. The basement was eventually penetrated at 305.15 m depth, with the contact between it and overlying glacial sediments being successfully cored. A 5.05 m thickness of basement orthogneiss and granite was subsequently cored before the hole was terminated at a depth of 310.2 m. GOMA DH2 targeted the Yoolperlunna basement inlier. Rotary mud drilling from the surface to basement at 52 m depth proceeded very slowly, due to significant lost circulation problems. To ensure that fresh basement rock samples would be obtained, the run of rotary mud drilling was extended into the basement (gneiss) until blade refusal occurred at a depth of 60.4 m. The hole then proceeded via HQ and NQ coring for 28.2 m before reaching its final depth of 88.6 m. GOMA DH3 targeted the extension of the Amaroodinna basement inlier. Rotary mud drilling penetrated ~80 m of Bulldog Shale before encountering an extremely hard quartzite at 80 m depth. A switch to HQ coring at 141.1 m depth resulted in the recovery of 28.2 m of core samples of this quartzite before the hole reached its final depth of 169.3 m. GOMA DH4 targeted a basement high in the crustal block immediately north of the Mabel Creek block. Rotary mud drilling was successful in penetrating basement at a depth of 462 m, ~160 m deeper than expected. 50.9 m of core was obtained from the basement over the depth interval 465.9-516.8 m.