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Global Volcanism Program | Image GVP-10380

Multi-colored individual units of the Acajutla debris avalanche deposit are offset along normal faults in this view of a quarry wall 6 km SE of the city of Sonsonate. Many blocks are unfractured, and some are shattered blocks with jigsaw textures. About 8 m of the quarry wall is exposed on the right-hand side. The voluminous Acajutla avalanche deposit was produced by late-Pleistocene edifice failure of Santa Ana; this quarry lies about 18 km from the volcano. Photo by Lee Siebert, 2002 (Smithsonian Institution).

Multi-colored individual units of the Acajutla debris avalanche deposit are offset along normal faults in this view of a quarry wall 6 km SE of the city of Sonsonate. Many blocks are unfractured, and some are shattered blocks with jigsaw textures. About 8 m of the quarry wall is exposed on the right-hand side. The voluminous Acajutla avalanche deposit was produced by late-Pleistocene edifice failure of Santa Ana; this quarry lies about 18 km from the volcano.

Photo by Lee Siebert, 2002 (Smithsonian Institution).

Creative Commons Icon This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Keywords: debris avalanche deposit | hydrothermal alteration | exposure | outcrop | stratigraphy


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