Abstract
Abstract Travel‐time from explosions fired on the continental shelf round the Cape York Peninsula were recorded by a number of mobile seismic recording crews and seismic observatories. Least squares analysis of the results from various groups of shots indicated upper crustal velocities between 5.82 km/sec and 5.94 km/sec, lower crustal velocities between 6.62 km/sec and 6.83 km/sec, and upper mantle velocities between 7.84 km/sec and 8.09 km/sec. Subsequent time‐term analysis of the results gave depths to the intermediate refractor of 10 km at the continental margins increasing to 25 km in the Gilbert River region of Cape York. The Mohorovicic “Discontinuity” (M) dips at an average of 3° from depths of 25 km at the edge of the continent to 45 km in Central Cape York and the regions northwest of Charters Towers.
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