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.
Composite Volcanoes. By David Olmstead. Composite volcanoes are also called strato-volcanoes. It is a member of the volcanic landforms family. As the name suggests, they are composed of lava flows and pyroclastic materials of intermediate composition which includes volcanic ash, cinders, blocks and fragments. of rock.It should not be confused with shield volcanoes or cinder cones because they not only differ in composition but also the shapes.ormation of composite volcanoes. They result from alternating layers of the composite materials like lava volcanic ash. A significant characteristic of the composite volcano is the process through which the magma from inside the earthâs surface transits to the top of the land.