TL;DR: The only active volcano known in Antarctica, Mount Erebus (3,721 m) consists of trachyte, kenyte, basalt and other volcanic rocks.
Abstract: WHILE conducting pedological and biological studies in the ice-free areas of East Antarctica, one of us (F. C. U.) and Dr. H. Janetschek had the opportunity in February 1962 to climb Mount Erebus. Considered the only active volcano known in Antarctica, Mount Erebus (3,721 m) consists of trachyte, kenyte, basalt and other volcanic rocks1. Extensive ice and snow cover limits the soil occurrence to the lower snow-free slopes, to exposed rock projections, a few areas near the hot fumaroles, and in the vicinity of the active crater.