BackgroundThe Chiquimula volcanic field occupies a fault-bounded basin underlain by Cretaceous plutonic rocks in the Chiquimula Valley of SE Guatemala. Initial eruptions during the Pleistocene produced mesa-forming basaltic lava flows along the N-S-trending fault forming the eastern edge of the Ipala graben. These were followed by the eruption of widespread lava flows NW of Chiquimula town that covered about 12 sq km. The most recent eruptions produced basaltic cinder cones and lava flows near the northern edge of Chiquimula town. The cinder cones were constructed along a N-S-trending fracture, with Cerro Grande at the northern end being the largest and Cerro Chiquito at the southern end being the youngest. The lava flows from Cerro Chiquito are so fresh and sparsely vegetated they were considered by Williams et al. (1964) to possibly be less than 1000 years old.
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS