UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary

Glossary of Karst and Cave Terms

lava karst
A non-karst term. Subsurface openings formed in lava flows due to outflow of liquid lava from beneath a solidified crust or due to gas blisters. Tubes or tunnels are formed with such pseudokarst features as lava stalactites and also collapse structures and basins of closed drainage. Lava karst does not arise through solution of the rock by circulating water and thus is not a true karst [20]. Synonyms: (French.) pseudo-karst; (German.) (Vulkanischer Karst), Lava- Karst, Pseudokarst; (Greek.) pseudokarst; (Italian.) pseudocarsismo vulcanico; (Spanish.) volcanokarst (general), tubo volcanico (tube, tunnel), jameo (collapse structure), malpais (topographic feature similar to lapies); (Turkish.) lav karsti, a ldatici karst. See also lava cave; pseudokarst.