“Magma,” definition 5: A confused or disordered body or mass of something.
—Oxford English Dictionary Online (20 September 2016)
|Lava forms ropey pāhoehoe textures. How molten must the subsurface rock that fueled this lava be to get classified as “magma”? Credit: iStock.com/Justin Reznick|
The authors of this article argue that we need a more precise definition of magma.