Figure 11-32: R I V U X G
A Volcanic Eruption on Earth The eruption of Mount St. Helens in Washington State on May 18, 1980, released a plume of ash and gas 40 km (25 mi) high. Eruptions of this kind on Earth, Venus, and Mars probably gave rise to those planets’ original atmospheres.
A Volcanic Eruption on Earth The eruption of Mount St. Helens in Washington State on May 18, 1980, released a plume of ash and gas 40 km (25 mi) high. Eruptions of this kind on Earth, Venus, and Mars probably gave rise to those planets’ original atmospheres.
(USGS)