I’m constantly amazed at how God has created the world. There’s always something amazing to discover.
Like a blue fire volcano!
The volcano Kawah Ijen lies along a subduction zone in Indonesia. If you think of the earth as a baseball, the leather in the baseball represent the techtonic plates and the seams are where the plates meet. In a subduction zone, one plate slides under the other causing the rock on the lower plate to melt. This melted rock is more buoyant and rises to the surface, sometimes coming out in volcanic eruptions of lava and gas.
But Kawah Ijen has a special kind of volcanic display—blue fire. This blue phenomenon cascades down the volcano like lava, but it’s not blue lava. It’s actually rivers of sulfur. The sulfur gas escapes from cracks called fumeroles, hits the cooler air and some of it condenses into liquid sulfur.
When this sulfur ignites, it burns with blue fire (at up to 1,112°F) and appears to flow down the volcano like lava. Some of the flames reach as high as 16 feet.
This volcano generates so much sulfur that the local people mine it. They use spring water to condense the sulfur around ceramic pipes, which hardens it. Then these sulfur miners carry their rock load (usually 100 to 200 lbs of sulfur) down the volcano on their backs. What a way to make a living.
Check out the National Geographic link here for more amazing pictures of this blue volcano!
References: Skelton, Renee. “Blue Volcano.” National Geographic Kids, March 2015, p. 22.