Endogenous and exogenous growth of the monogenetic Lemptégy volcano, Chaîne des Puys, France

The Lemptégy volcano in France's Chaîne des Puys reveals the complex endogenous and exogenous growth of monogenetic scoria cones, characterized by dynamic changes in shape, structure, and eruptive style. The study, facilitated by decades of controlled quarrying, uncovered a shallow plumbing system and detailed stratigraphy that record two temporally separated eruptions from closely spaced vents. These eruptions involved diverse volcanic activities such as Hawaiian, Strombolian, and Vulcanian explosions, lava effusion, cryptodome formation, partial collapse, satellite vent development, eruptive pauses, and intrusive uplift. The volcano's internal architecture and microtectonic structures provide insights into the local stress field and magmatic flow direction changes, illustrating the intricate evolution of monogenetic volcanoes.

Delcamp, A., van Wyk de Vries, B., Stéphane, P., & Kervyn, M. (2014). Endogenous and exogenous growth of the monogenetic Lemptégy volcano, Chaîne des Puys, France. Geosphere, 10(5), 998–1019. https://doi.org/10.1130/ges01007.1