L050&L057 Giles-Carnegie seismic reflection and refraction survey, SA_WA, 1961

Seismic refraction velocities were measured in the Archaean or crystalline basement rocks at Mount Davies (SA) and Giles (WA) where the rocks are near the surface. Refraction velocities were measured in the Proterozoic outcrops of the Rawlinson Range and Lake Hopkins. Refraction velocities were measured in the Palaeozoic and Mesozoic rocks at Lake Christopher, and in the Mesozoic rocks at Iragana Turnoff.Those velocities were used as a basis for a suggested correlation between refractors recorded at traverses between Signpost and Mount Beadell. Reflection tecniques, as tried 9 yielded fair reflections at Mount Beadell, and doubtful reflection alignments at trig. point NMF 19. It is likely that the sedimentary basin shows an increasing thickness of sediments from Signpost to Mount Beadell, At Mount Beadoll there is at least 6000 ft of apparently post-Proterozoic sediments. The thickness and degree of metamorphism of Proterozoic ratio below this have not been determined. Present evidence suggests an area of uplift under Lake Breaden.

研究人员在近地表出露的太古宙（Archaean）结晶基底岩中，于南澳大利亚州戴维斯山（SA）与西澳大利亚州贾尔斯（WA）开展了地震折射波速度测试。在罗利森岭与霍普金斯湖的元古代（Proterozoic）露头区，同样完成了地震折射波速度测量。在克里斯托弗湖的古生代（Palaeozoic）与中生代（Mesozoic）岩层中，以及伊拉加纳岔路口的中生代（Mesozoic）岩层内，均开展了地震折射波速度测试。上述测试获取的速度数据，被用于构建西普波特与比德尔山之间测线所记录的折射界面间的关联推测。针对反射勘探技术的测试结果显示，比德尔山区域获得了质量尚可的反射波信号，而在三角测量点NMF 19处仅得到疑似的反射同相轴。推测该沉积盆地的沉积物厚度从西普波特向比德尔山逐渐增大；比德尔山区域至少发育6000英尺的元古代之后沉积物。该套沉积物下方的元古代岩层的厚度与变质程度尚未确定。现有地质证据表明，布雷登湖下方存在抬升区域。