Digital Chalkboard is shutting down and will no longer be available after January 26, 2022.
California is investing in a new curated repository of free, high-quality, open source instructional resources for local educational agencies and
educators to use. Please visit California Educators Together and sign up for your free account today.
Please contact us at support@mydigitalchalkboard.org, if we can be of further assistance.
The Yellowstone Plateau, at the center of one of the Earth's largest volcanic fields, spans the continental divide between the Northern and Middle Rocky Mountains at an average elevation of about 2.400 m. The eruptions of the Yellowstone Plateau volcanic field, entirely postdating 2.5 Ma, were exceedingly voluminous but are only the surficial expression of the emplacement of a batholithic volume of rhyolitic magma to high crustal levels. Although the latest eruptions were about 70,000 years ago, an immense ... MoreThe Yellowstone Plateau, at the center of one of the Earth's largest volcanic fields, spans the continental divide between the Northern and Middle Rocky Mountains at an average elevation of about 2.400 m. The eruptions of the Yellowstone Plateau volcanic field, entirely postdating 2.5 Ma, were exceedingly voluminous but are only the surficial expression of the emplacement of a batholithic volume of rhyolitic magma to high crustal levels. Although the latest eruptions were about 70,000 years ago, an immense hydrothermal system and a variety of geophysical characteristics indicate the continued presence of an active shallow magma chamber. Less
