In the investigation of a remote and isolated island for mineral and metalliferous deposits its geological structure and the character of the rock masses of which it is formed are of primary importance. Where the evidences of metalliferous deposits are more or less openly and widely exposed the geological structure, while still of interest, is not so important. Ore deposits, as a rule, occur in rock-bodies which have definite relations to each other, a characteristic geological structure.

In the island of South Georgia, where the exposed evidences of metalliferous ores are very slight, the investigation of its rock-bodies, their character and geological structure, is a necessity. By making an examination of that kind, we endeavour to ascertain if there may be concealed ore-bodies which further exploratory prospecting may with a reasonable probability expose to view.