Volcanology or also spelled vulcanology is the study of volcanoes<span>, lava, magma, and anything related to geological, geophysical and geochemical phenomena.</span>
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The roots of the expedition of Meriwether Lewis and William Clark were already lengthy by the time of the Louisiana Purchase in April 1803. Thomas Jefferson's curiosity about the West was lifelong, sustained by his broad scientific interests and his hopes and dreams for the future of the United States.
