Volcanologist Jim Vallance samples the TB3 (Tierra Blanca 3) deposit, the second oldest of four major deposits associated with the formation of Ilopango caldera. This outcrop is located south of the town of Panchimalco, about 20-30 km SW of the caldera.

Photo by Carlos Pullinger, 1996 (Servicio Nacional de Estudios Territoriales, El Salvador).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Galleries: Fieldwork

Keywords: field work | volcanologist | deposit | outcrop | stratigraphy | geology | tephra

Ilopango