Martin Massif [SEP] continent
Martin Massif
Martin Massif () is a massif in the Porthos Range of the Prince Charles Mountains, Antarctica, just east of Mount Lied to which it is connected by a low col. It was plotted from Australian National Antarctic Research Expeditions air photos, and was named for P.J. Martin, officer in charge at Mawson Station in 1964.
culminating point of the Aarmassif, a geologic crystalline massif which crops out in the eastern Bernese Alps and Urner Alps. The massif belongs to the Helvetic zone and consists of rocks from the European continent, mainly granites and gneisses. The summit itself is composed of amphibolites.
The tectonic uplift of the massif occurred late in the alpine orogeny, during the Oligocene, 30 to 40 million years ago. The inelastic deformation of rocks led to many fractures and formation of hydrothermal crystals by the deposition of the saturated water flowing inside.