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Mount St. Helens provides a rare opportunity to study transient geologic processes which produced, within a few months, changes which geologists might otherwise assume required many thousands of years. The volcano, therefore, challenges our way of thinking about how the earth works, how it changes, and the time scale we are accustomed to attaching to its formations. These processes and their effects allow Mount St. Helens to serve as a miniature laboratory for catastrophism.
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