Shield Volcanoes. A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They have very gentle slopes and are very developed horizontally. These are the classical Hawaii examples â steady flow and accummulation of lava leading to the shield-type formation.hield Volcanoes. A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They have very gentle slopes and are very developed horizontally. These are the classical Hawaii examples â steady flow and accummulation of lava leading to the shield-type formation.
Definition of OVERTURN. 1. : the act of overturning: the state of being overturned. 2. : the sinking of surface water and rise of bottom water in a lake or sea that results from changes in temperature that commonly occur in spring and fall.efinition of OVERTURN. 1. : the act of overturning: the state of being overturned. 2. : the sinking of surface water and rise of bottom water in a lake or sea that results from changes in temperature that commonly occur in spring and fall.
transitive verb. 1 : to cause to turn over : upset overturned the vase. 2a : invalidate, destroy the degree to which accident could overturn the schemes of wise men â Oscar Handlinb : reverse 2a overturn a court ruling. intransitive verb. : upset, turn over The car went off the road and overturned several times.