Pillow Basalts: Where They Form, Their Geological Characteristics, and Examples
Pillow basalts form mainly on the ocean floor but also in subaqueous environments like lakes. An example is the Hopi Buttes Volcanic Field near Petrified Forest National Park, where eruptions occurred in a shallow lake. Geological characteristics of pillow basalts include a fine-grained texture and a glassy crust. They often exhibit radial cooling cracks and … Read more