About Blancas, Lomas
Blancas, Lomas is a stratovolcano rising to 2,268 meters (7,441 feet) in Chile's South America Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity.
Geography & Climate
Blancas, Lomas is located in Chile, within the Southern Andean Volcanic Arc of the broader South America Volcanic Regions. Situated at 36.29° S, 71.01° W in the Southern Hemisphere, the volcano lies within a temperate climate zone. At 2,268 meters above sea level, Blancas, Lomas rises above the surrounding terrain into montane or subalpine conditions. The elevation creates distinct ecological zones along its flanks, from forested lower slopes to exposed rocky terrain near the summit. The volcanic landform is characterized as a composite, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Blancas, Lomas sits in a subduction zone, where one tectonic plate dives beneath another, creating intense heat and pressure that generates magma. Subduction zones are responsible for many of the world's most explosive volcanoes and deadliest eruptions. For communities in Chile near Blancas, Lomas, this tectonic setting means the volcano is capable of producing powerful explosive eruptions, pyroclastic flows, and lahars that can threaten populated areas within tens of kilometers of the summit. The dominant rock type is basalt / picro-basalt, a dark, fine-grained volcanic rock that forms from rapidly cooling, low-viscosity lava. Basaltic eruptions tend to be less explosive and produce fluid lava flows that can travel long distances. While less immediately dangerous than explosive eruptions, basaltic lava flows can destroy structures and infrastructure in their path, and volcanic gases released during these eruptions can affect air quality over a wide area.
GVP Reference Summary
Volcán Lomas Blancas is a small shield-like feature of late-Pleistocene to Holocene age (Moreno and Naranjo, 1991) located about 15 km SE of Nevado de Longaví. An open scarp to the SE side extends about 2.3 km from the summit. The central cone is basaltic. basaltic andesite aa lava flows extend 7 km from the scarp. Much of the volcano is covered by pumice deposits that probably originated from Nevado de Longaví.
— Smithsonian Institution, Global Volcanism Program
0 Recorded Eruptions
No eruption records available for Blancas, Lomas.
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Blancas, Lomas
Is Blancas, Lomas an active volcano?+
Blancas, Lomas is classified as active based on credible evidence of past eruptions. Although its last known eruption was in prehistoric times, volcanologists consider it capable of erupting again.
How high is Blancas, Lomas?+
Blancas, Lomas has a summit elevation of 2,268 meters (7,441 feet) above sea level. At 2,268 meters, it is comparable in height to many significant mountain peaks and stands well above the tree line.
What type of volcano is Blancas, Lomas?+
Blancas, Lomas is classified as a Stratovolcano. Stratovolcanoes (also called composite volcanoes) are steep, conical volcanoes built up by many layers of hardened lava, tephra, and volcanic ash. They are among the most common and dangerous types, known for explosive eruptions.
Where is Blancas, Lomas located?+
Blancas, Lomas is located in Chile, in the South America Volcanic Regions. More specifically, it lies within the Southern Andean Volcanic Arc. Its exact coordinates are -36.286° latitude, -71.009° longitude.
Is it safe to visit Blancas, Lomas?+
Blancas, Lomas can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. Chile may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.
