Arizona State University graduate student Andrew Ryan has discovered a new form of Martian lava flow that resembles snail or nautilus shells. More than a dozen lava coils visible in a volcanic region named Cerberus Palus (NASA / JPL-Caltech / UA) Such patterns have been found on Earth, but never before on Mars. The discovery of 269 spiral lava coils ranging from 5 to 30 meters wide in the Athabasca Valles Region is published in the journal Science. “I...
