Report on investigation of sulphur deposits, Iamelele-Fangululu district, Fergusson Island, with appendix: Clays resulting from hydrothermal decomposition of volcanic flow rocks

An examination of the deposits took place from 29th June to 13th July, 1950. Very heavy rains hampered the work, but it was possible to make a careful examination of the volcanic areas, and also to gain a general idea of the geological conditions. Some mapping was carried out by compass-pace methods but it is evident that more detailed surveying, with the use of aerial photographs, in order to produce a geological map of the D'Entrecasteaux group, would be worthwhile. An account of this examination and its results is given in this report. The general geology of the area and vegetation are described. The location, nature, extent and destruction of the sulphur deposits are discussed. A note on clays resulting from hydrothermal action upon volcanic flow rocks is appended.