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.
Shield Volcano Facts. A shield volcano resembles the appearance of a Hawaiian warriorâs shield in that they have a low-angle profile. In almost all cases the comparison to a shield is done because the width of these volcanoes is typically around 20 times the size of their height. shield volcano is most likely to form during a lava flow of fluid basaltic material, usually those that flow down from either a flank fissure system or the summit itself. The most common type of shield volcano is those that form during one long-term eruption.