Logo link to homepage

Global Volcanism Program | Image GVP-08220

The SE wall of El Valle de Antón caldera rises up to 300 m above the flat caldera floor.  The caldera was formed during major explosive eruptions about 1.1-1.3 million years ago.  Post-caldera phreatomagmatic and phreatic eruptions related to a former lake filling the caldera floor have continued until the latest Pleistocene.  More than 90 m of lake sediments were deposited on the caldera floor prior to draining of the lake through a breach in the SW caldera rim.  The peak at the right center is Cerro la Silla. Photo by Lee Siebert, 1998 (Smithsonian Institution).

The SE wall of El Valle de Antón caldera rises up to 300 m above the flat caldera floor. The caldera was formed during major explosive eruptions about 1.1-1.3 million years ago. Post-caldera phreatomagmatic and phreatic eruptions related to a former lake filling the caldera floor have continued until the latest Pleistocene. More than 90 m of lake sediments were deposited on the caldera floor prior to draining of the lake through a breach in the SW caldera rim. The peak at the right center is Cerro la Silla.

Photo by Lee Siebert, 1998 (Smithsonian Institution).


El Valle