lõiginaugud

Lõõginaugud are a geological phenomenon found in certain types of volcanic rock formations, particularly those rich in silica. These formations are characterized by the presence of numerous small, often interconnected cavities or holes within the rock structure. The term "lõõginaugud" is of Estonian origin, translating roughly to "flame holes" or "blast holes," which hints at their likely formation process.

The prevailing theory for the creation of lõõginaugud involves the rapid cooling of molten lava. When lava, particularly with a high gas content, cools quickly, the trapped gases within the magma can expand and escape. This rapid degassing, combined with the solidification of the surrounding rock, leaves behind a network of voids. The size and distribution of these holes can vary significantly depending on the specific composition of the lava, the rate of cooling, and the pressure conditions during eruption.

These formations are not to be confused with other types of volcanic cavities like lava tubes, which are typically much larger and formed by the drainage of molten lava. Lõõginaugud are generally smaller, more numerous, and are integral to the rock matrix itself. While not a widespread or commonly discussed geological feature globally, they offer insights into the degassing processes and cooling dynamics of specific volcanic eruptions, contributing to our understanding of volcanic petrology.