Waiowa volcano (also known as Goropu) is an isolated cinder cone on the mainland of New Guinea 19 km inland from Collingwood Bay in Oro Province.
The cone formed in 1943-44 through a series of explosive eruptions in an area without previous volcanic activity.
The location of the new vent is along a fault-line near the margin of the Owen Stanley metamorphic belt. The dike penetrated a basement of Paleozoic to pre-Cambrian metamorphic rocks, and erupted trachyandesitic magma.
- Smithsonian / GVP volcano information
- B. P. Ruxton (1966) "A late pleistocene to recent rhyodacite-trachybasalt-basaltic latite volcanic association in north-east Papua", Bull. Volc., Volume 29, Number 1, pp. 347-369