Mentolat
| Mentolat | |
|---|---|
 Mentolat
|
|
| Highest point | |
| Elevation | 1,660 m (5,450 ft) |
| Prominence | 1,620 m (5,310 ft) |
| Listing | Ultra |
| Coordinates | 44°41′48″S 73°04′33″W / 44.69667°S 73.07583°WCoordinates: 44°41′48″S 73°04′33″W / 44.69667°S 73.07583°W |
| Geography | |
| Location | Chile |
| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | 1710 ± 5 years |
Mentolat is an ice-filled, 6 km (4 mi) wide caldera in the central portion of Magdalena Island, Aisén Province, Chilean Patagonia. This caldera sits on top of a stratovolcano which has generated lava flows and pyroclastic flows. The caldera is filled with a glacier.
Little is known of the eruptive history of Mentolat, but it is thought to be young, with a possible eruption in the early 18th century that may have formed lava flows on the western slope. The earliest activity occurred during the , and Mentolat has had some major explosive eruptions during the Holocene.
The etymology of Mentolat has been tentatively linked to Men (o) lat, which in the Chono language means "to decipher". Mentolat was referred to as Montalat on a map of the early 20th century, and other spellings such as Menlolat, Montalat, Montolot and Matalot have been identified.
Mentolat lies on the central part of Isla Magdalena of southern Chile, close to the town of Puerto Cisnes in the Aysen Region, from which it is separated by the Puyuhuapi strait. Other towns in the area are: La Junta, Puerto Gala, Puerto Gaviota and Puyuhuapi. Like most volcanoes in the region, Mentolat is far away from roads and difficult to access.
Mentolat is located in the Southern Volcanic Zone, a 1,400 kilometres (870 mi) long volcanic arc with about 40 volcanoes active during the late Quaternary. The Southern Volcanic Zone is typically subdivided into four separate segments; Mentolat belongs in the southern segment. Some large volcanic eruptions have occurred in the Southern Volcanic Zone including the Diamante caldera eruption at Maipo and, during historical times, the 1932 eruption of Cerro Azul and the 1991 eruption of Cerro Hudson.
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