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Global Volcanism Program | Image GVP-07601

These bedded scoria layers from Santa Ana were transported intact with only slight disruption about 30 km from the volcano in the Acajutla debris avalanche.  A more than 20-m-thick sequence of inter-bedded tephra layers and thin lava flows is exposed in this quarry in an avalanche hummock near Highway 2.  The red-and-yellow bars on the scale mark 10-cm increments. Photo by Paul Kimberly, 1999 (Smithsonian Institution).

These bedded scoria layers from Santa Ana were transported intact with only slight disruption about 30 km from the volcano in the Acajutla debris avalanche. A more than 20-m-thick sequence of inter-bedded tephra layers and thin lava flows is exposed in this quarry in an avalanche hummock near Highway 2. The red-and-yellow bars on the scale mark 10-cm increments.

Photo by Paul Kimberly, 1999 (Smithsonian Institution).


Santa Ana