How Golda Meir, Indira Gandhi, and Margaret Thatcher Wrought a New Standard of Leadership. It is surely time to recognize what an immense improvement has been wrought in world standards of governance by the rise of female national leaders.
Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield.
Lava domes often form in calderas of stratovolcanoes after a major eruption where the summit of the volcano collapses or is blown away during the eruption. A lava dome has been forming in the crater of Mount Saint Helens after the 1980 eruption of the volcano.ther small domes form on the side of large composite volcanoes. A lava dome on the slopes of a composite volcano can become unstable when hot lava erupts causing pyroclastic flows to form on its slopes.