The Principles and Practice of Geophysical Prospecting: Being the Report of the Imperial Geophysical Experimental SurveyA. B. Broughton Edge, T. H. Laby Originally published in 1931, this book contains the report of the Imperial Geophysical Experimental Survey regarding an extended field study carried out in various parts of Australia from 1928 to 1930. The aim of the study was to test the applicability of geophysical methods in a range of conditions which were seen as representative of different parts of the British Empire. Electrical, gravimetric, magnetic and, to a limited extent, seismic methods were examined in areas containing sulphide and other ores, brown coal, graphite and saline waters. The text contains an account of the study, together with numerous illustrative figures and a detailed index, it will be of value to anyone with an interest in the development of geophysics. |
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A.C. potential ratio alluvium alternating current apparatus Australia axis basalt Beacon beam bed-rock Bore bore-hole C₁ cable calculated carried Chillagoe clay coal coil conductive bodies conductive zones conductor copper country rock curves depth determined direction distance district disturbance dyke effect electrical methods electrodes electromagnetic ellipse equipotential line survey equipotential surfaces explosion formations frequency Gelliondale geological Gish and Rooney gossan gradients gradiometer graphite gravimetric gravity Gulgong H₁ horizontal component indication induction instrument investigations located lode loop magnetic anomalies magnetic field magnetic survey magnetite magnetometer measured miles mineral Mines Moonta Murrayville negative centres observed occur ohm cm ore-bodies out-of-phase outcrops overburden phase angle plane position potential ratio method potentiometer primary field pyrites pyrrhotite recorded Renison Bell resistivity scale secondary field seismic seismometer Shaft shown in Fig slate South spontaneous polarization stations sulphide Tasmania tests torsion balance traverse velocity wave wire