BackgroundThe low shield volcano of Floreana Island, also known as Charles Island or Santa María Island, is densely covered with cinder cones. A 5-km-wide caldera at the center of the island has an irregular floor. Several young lava flows were considered to have been as young as few thousand or even a few centuries old based on their youthful morphology (McBirney and Williams, 1969), but a surface exposure age of 26 +/- 7 ka was obtained on the youngest flow (Kurz and Geist, 1999). An 1813 eruption attributed to Floreana in the Catalog of Active Volcanoes of the World is considered to have actually occurred at Sierra Negra volcano on Isabela Island (Simkin 1980, pers. comm.). The most conspicuous of the cinder cones on the island is Cerro de Pajas, which rises 335 m above its surroundings. It fed a massive pahoehoe lava flow, perhaps the youngest on Floreana, that reached the SW coast over a broad 6.5 km area.
Source: Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8