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Serdán-Oriental Volcano - John Seach
Mexico
19.27 N, 97.47 W
summit elevation 3485 m
Tuff cones
The volcanic region consists of scoria cones, tuff rings (Laguna Atexcac and Laguna Alchichica), tuff cones, lava domes (Derrumbadas, Cerro Pizarro), and lava flows of unknown age.
Several of the tuff rings, such as Laguna Atexcac and Laguna Alchichica, are filled with lakes. A major explosive eruption produced the Quetzalapa plinian pumice-fall deposit 20,000 years ago.
Serdán-Oriental Volcano Eruptions
20,000 years ago.