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The Global Volcanism Program has no activity reports for Santa Isabel.
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The Global Volcanism Program has no Bulletin Reports available for Santa Isabel.
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.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|0850 BCE (?)||Unknown||Confirmed||Radiocarbon (corrected)|
|3550 BCE (?)||Unknown||Confirmed||Radiocarbon (corrected)|
|4800 BCE (?)||Unknown||Confirmed||Radiocarbon (corrected)|
|5500 BCE (?)||Unknown||Confirmed||Radiocarbon (corrected)|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Espana, Cerro||Dome||4350 m||4° 45' 0" N||75° 23' 0" W|
|Santa Isabel is a small, glacier-clad shield volcano that is viewed here from its much more massive neighbor to the NE, Nevado del Ruiz. Holocene lava flows fill valleys SW and SE of Santa Isabel. A small Holocene lava dome was emplaced at the center of a circular depression about 10 km SW of the volcano. No historical eruptions have occurred from Santa Isabel.
Photo by Norm Banks, 1985 (U.S. Geological Survey).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Herd D G, 1982. Glacial and volcanic geology of the Ruiz - Tolima volcanic complex Cordillera Central, Colombia. Pub Geol Especiales INGEOMINAS, Bogata, 8: 1-48.
Huggel C, Cegballos J L Pulgarin B, Ramirez J, Thouret J-C, 2007. Review and reassessment of hazards owing to volcano-glacier interactions in Colombia. Annals Glaciology, 45: 128-136.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Thouret J-C, Cantagrel J-M, Salinas R, Murcia A, 1990. Quaternary eruptive history of Nevado del Ruiz (Colombia). J Volc Geotherm Res, 41: 225-251.
Thouret J-C, Vatin-Perignon N, Cantagrel J M, Salinas R, Murcia A, 1985. Le Nevado el Ruiz (Cordillere Centrale des Andes de Colombie): stratigraphie, structures et dynamisme d'un appareil volcanique andesitique, compose et polygenique. Rev Geog Phys Geol Dynam, 26: 257-271.