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Santa Isabel

Shield volcano · Colombia · 4944m

Santa Isabel is a small glaciated volcano is seen here from its much larger neighbor to the NE, Nevado del Ruiz. Holocene lava flows fill SW and SE valleys. A small Holocene lava dome was emplaced about 10 km SW of the volcano.
Santa Isabel is a small glaciated volcano is seen here from its much larger neighbor to the NE, Nevado del Ruiz. Holocene lava flows fill SW and SE valleys. A small Holocene lava dome was emplaced about 10 km SW of the volcano. · Photo: Photo by Norm Banks, 1985 (U.S. Geological Survey). · Wikimedia Commons
Type
Shield volcano
Country
Colombia
Region
South America Volcanic Regions / Northern Andean Volcanic Arc
Elevation
4944m
Coordinates
4.818, -75.365
Last eruption
-850
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Shield
Major rock type
Andesite / Basaltic Andesite
Geological summary

Santa Isabel is a small andesitic shield volcano that is dwarfed by its neighbors to the NE (Nevado del Ruiz) and SE (Tolima). Three lava domes occupy the elongated, N-S-trending glaciated summit region, which has two main peaks. Holocene lava flows fill valleys to the SW and SE. A small Holocene lava dome was emplaced at the center of a circular depression about 10 km SW. No historical eruptions are known.

From Wikipedia

Nevado de Santa Isabel is a shield volcano straddling the boundaries of the Colombian departments of Tolima, Caldas, and Risaralda, being the highest point of the latter. The volcano lies approximately 10 kilometers southwest of the larger Nevado del Ruiz volcano. Santa Isabel is the third highest peak in Los Nevados National Natural Park. It is a relatively flat volcano with three domes of nearly equal elevation.

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Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
5500 BCE~5306 BCE · 1 eruptions · max VEI ?4919 BCE~4725 BCE · 1 eruptions · max VEI ?3562 BCE~3369 BCE · 1 eruptions · max VEI ?1044 BCE~850 BCE · 1 eruptions · max VEI ?5500 BCE4337 BCE3175 BCE2206 BCE1044 BCE

Detailed timeline

  1. 850 BCEVEI ?Geological estimate
    BCE 850 – Ongoing
  2. 3550 BCEVEI ?Geological estimate
    BCE 3550 – Ongoing
  3. 4800 BCEVEI ?Geological estimate
    BCE 4800 – Ongoing
  4. 5500 BCEVEI ?Geological estimate
    BCE 5500 – Ongoing

External links

⚠ For reference only. Not for emergency response.