tulovirroille
Tulovirroille is a term found in some Finnish-language sources referring to a network of surface lava channels that develop during effusive volcanic eruptions. In mainstream volcanology, the same features are typically described as lava channels or pahoehoe flow fields, with cave-like lava tubes and crust-rimmed channels forming as lava travels.
Formation and morphology: As low-viscosity lava erupts and advances, a solid crust can form on the surface,
Distribution and examples: Lava channels of this type are most commonly reported in basaltic shield-volcano fields
Significance: Studying these channels helps reconstruct flow paths and eruption dynamics, contributing to hazard assessment and
Ecology and preservation: Ultra-high temperatures and mineral-rich fluids limit life within these channels, but microbial communities