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Global Volcanism Program | Image GVP-08023

The Atexcac maar is one of several lake-filled maars of the Serdán-Oriental volcanic field. The walls expose pyroclastic surge beds produced during formation of the maar. Cretaceous limestone beds and remnants of a basaltic scoria cone partially destroyed during formation of the maar are also exposed in the western crater walls. Abundant juvenile obsidian clasts are found in the surge deposits. Photo by Hugo Delgado-Granados, 1997 (Universidad Nacional Autónoma de México).

The Atexcac maar is one of several lake-filled maars of the Serdán-Oriental volcanic field. The walls expose pyroclastic surge beds produced during formation of the maar. Cretaceous limestone beds and remnants of a basaltic scoria cone partially destroyed during formation of the maar are also exposed in the western crater walls. Abundant juvenile obsidian clasts are found in the surge deposits.

Photo by Hugo Delgado-Granados, 1997 (Universidad Nacional Autónoma de México).

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Keywords: maar | crater | crater lake


Serdán-Oriental