Tag Archive for 'Caldera'

This image, acquired by NASA’s Mars Reconnaissance Orbiter on October 1, 2020, shows several craters in Arabia Terra filled with layered rock. Image credit: NASA / Molly Wasser.

Early Mars Experienced Volcanic Supereruptions, Reseachers Say

Sep 16, 2021 by News Staff

Using high-resolution images from NASA’s Mars Reconnaissance Orbiter, planetary scientists have discovered 4-billion-year-old layered deposits containing...

An aerial oblique photo of the volcanoes in the Islands of Four Mountains, Alaska, taken in July 2014. In the center is the summit of Mount Tana. Behind Tana are (left to right) Herbert, Cleveland, and Carlisle volcanoes. Image credit: John Lyons / USGS.

Geologists Find Evidence for Giant Underwater Volcano in Alaska’s Aleutian Chain

Dec 3, 2020 by News Staff

The Islands of Four Mountains, a small group of volcanic islands in the central Aleutians, could actually be part of a single, undiscovered giant volcano...