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.
The largest volcanoes on Earth are shield volcanoes and one of the largest known volcanoes in our solar system, Olympus Mons on Mars, is a shield volcano also. Hawaiian shield volcanoes The Hawaiian Islands are composed of linear chains of these volcanoes including