Cylindrical Concentric Jointing in Lava Flows: Description and Preliminary Ideas on its Origin

Sánchez, John  J.; Luna, Mariana  L.; Alvarado, Guillermo  E.

doi:10.2139/ssrn.5266369

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Cylindrical Concentric Jointing in Lava Flows: Description and Preliminary Ideas on its Origin

44 Pages Posted: 23 May 2025

See all articles by John J. Sánchez

John J. Sánchez

National University of Colombia - Department of Geosciences and Environment

Highlights• Odd-looking joint systems in lava flows are found in several sites in Colombia, and Costa Rica.• Intermediate to felsic lava outcrops show a spindle-shaped mass surrounded by arching joints.• Cross-sections of joints show amazing concentric pattern.• A newly described lava structure is presented.

Keywords: Viscous lavas, andesites, dacites, cooling joints, concentric cylindrical platy jointing, Colombia, Costa Rica

Suggested Citation: Suggested Citation

Sánchez, John J. and Luna, Mariana L. and Alvarado, Guillermo E., Cylindrical Concentric Jointing in Lava Flows: Description and Preliminary Ideas on its Origin. Available at SSRN: https://ssrn.com/abstract=5266369 or http://dx.doi.org/10.2139/ssrn.5266369