👉 Blast veins are fractures in rock caused by the intense pressure and heat generated during a volcanic eruption. They form when magma or gas rapidly expands the surrounding rock, creating cracks and fissures that can extend deep into the Earth's crust. These veins often appear as branching networks of veins and channels within the rock, and they can be an indicator of past volcanic activity. Blast veins can also affect the stability of the surrounding rock, potentially leading to landslides or other geological hazards.
