The geology of a proposed major industrial site is thought toconsist of a thin layer (1-5m) of unconsolidated sandy materialoverlying dolerite bedrock. The dolerite is known to have a veryirregular upper surface and maybe highly weathered in places.Describe geophysical investigation techniques that may be suitablefor mapping the thickness of the unconsolidated sand and also thedistribution of unweathered basalt at shallow depths. For eachmethod you recommend, outline: a) the basic physical principles ofthe technique, b) the expected outcomes of the survey.
