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 are a type of volcano given their name for their broad gently sloping profile which looks like a warrior's shield. They are composed of thousands of fluid lava flows that spread great distances, sometimes greater than 50 kilometers. The tallest volcano in the world is a shield volcano.hield volcanoes are a type of volcano given their name for their broad gently sloping profile which looks like a warrior's shield. They are composed of thousands of fluid lava flows that spread great distances, sometimes greater than 50 kilometers. The tallest volcano in the world is a shield volcano.