Heimahori

Heimahori is a term that can refer to a specific type of volcanic eruption or the geological feature created by such an eruption. The term is often used in the context of Icelandic volcanology, but the phenomenon itself is not exclusive to Iceland. A heimahori eruption is characterized by the effusive outflow of highly fluid basaltic lava, which can travel considerable distances from the vent. This results in the formation of extensive lava fields or shield volcanoes, rather than steep-sided cones. The low viscosity of the lava allows it to flow easily, creating broad, gently sloping structures.

These eruptions are typically less explosive than other volcanic types, with gases escaping relatively unimpeded through the molten rock. The lava flows can be very voluminous, and their ability to spread out over large areas is a defining characteristic. Geologists use the term heimahori to describe both the eruptive process and the resulting landforms. Understanding heimahori eruptions is important for assessing volcanic hazards, particularly the potential for widespread lava flows that can impact infrastructure and settlements. The study of these eruptions also contributes to our understanding of magma composition and eruption dynamics in basaltic volcanic systems worldwide.