Buchanan, who is buried in Lancaster, has regularly been ranked one of the worst presidents by historians, citing his ambivalence towards the South wanting to secede from the Union prior to the Civil War.
A shield volcano is a type of volcano usually built almost entirely of fluid magma flows. They are named for their large size and low profile, resembling a warrior's shield lying on the ground. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from stratovolcanoes.
shield volcanoes. Volcanic mudflows, called lahars, help to shape the landforms created by composite volcanoes. Usually, composite volcanoes are found near subduction zones where two tectonic plates of the Earthâs crust collide and one is forced under the other. Parks with composite volcanoes include: Aniakchak National Monument and Preserve, Mount