Volcán Darwin is a shield volcano located on the southern part of Isabela Island in the Galápagos Archipelago, Ecuador. It is one of the six major volcanic centers that constitute the island, the others being Wolf, Alcedo, Sierra Negra, Cerro Azul and the extinct Rábida.
Geography and Morphology
- Elevation: Approximately 1,692 m (5,551 ft) above sea level.
- Coordinates: 0°33′S 91°17′W.
- Structure: The volcano exhibits the broad, gently sloping profile typical of shield volcanoes, formed by successive effusive eruptions of low‑viscosity basaltic lava. Its summit area contains a shallow caldera that has been partially breached by lava flows.
Geological History
Volcán Darwin is a product of the Galápagos hotspot, a mantle plume that has produced the archipelago over the past several million years. Radiometric dating places the oldest exposed rocks of Darwin at roughly 500 kyr, while the most recent eruptive activity is documented in 1975–1976, when fissure eruptions generated basaltic lava flows that reached the ocean on the volcano’s western flank. Since then the volcano has shown no confirmed eruptive activity, and it is presently classified as dormant.
Ecology
The volcano lies within the Galápagos National Park, a UNESCO World Heritage Site. Its lower slopes support tropical dry forest and shrubland, while higher elevations are characterized by tropical grassland and lava‑field vegetation. The varied habitats host endemic species such as the Galápagos land iguana (Conolophus subcristatus) and a range of native bird species, including the Galápagos hawk (Buteo galapagoensis).
Naming
The volcano was named in honor of Charles Darwin, the British naturalist whose observations of the Galápagos flora and fauna during the voyage of HMS Beagle (1835) contributed to the development of the theory of evolution by natural selection.
Conservation and Access
Volcán Darwin, like the rest of the archipelago, is protected under Ecuadorian law. Access to the volcano’s interior is regulated by the Galápagos National Park Directorate; trekking routes are limited to designated trails and require permits.
See also
- Galápagos Islands
- Shield volcano
- Charles Darwin
References
- Ecuadorian Institute of Geophysics (IG). Volcanic activity report: Galápagos hotspot. 2023.
- UNESCO World Heritage Centre. Galápagos Islands. Retrieved 2024.
- T. H. Miller et al., “Petrology of the Darwin volcano, Galápagos,” Journal of Volcanology and Geothermal Research, vol. 212, 2015.