WebShield volcanoes usually have slopes of just a few degrees near their bases. Their slopes max out at around 10 degrees and tend to flatten around their summits. The gentle slopes … WebAt divergent plate boundaries, volcanoes form as a result of magma rising to the surface through cracks in the earth's crust. The magma is hot and thin, resulting in gentle eruptions that produce shield volcanoes. These volcanoes have a broad, gently sloping cone shape, and their eruptions are characterized by the flow of lava rather than ...
Geology and History U.S. Geological Survey
WebWhat type of volcano is formed when it usually erupts quietly? A. SHIELD B. CINDER C. COMPOSITE D. STRATOVOLCANO WebJun 13, 2024 · A stratovolcano is a tall volcano shaped like a cone, formed by various layers of materials such as volcanic ash, hardened lava, pumice, and tephra. Stratovolcanoes are steep and have periodic explosive and effusive eruptions, although some have calderas, which are collapsed craters. The highly viscous lava that flows from this type of volcano ... cleopatra rock band
Three Types of Volcanoes: Cinder Cone, Shield and …
WebShield volcanoes are usually formed by lava flows that have low viscosity. Viscosity refers to the thickness of the lava, how much it resists being moved. Lava that flows easily tends to … WebShield volcanoes are formed from the hotspot in the ocean floor allowing the lava to flow and solidify in layers. They are large and sloping volcanoes that create a quiet eruption. … WebSubduction allows water from the subducting plate to be driven upward, off the subducting plate and into the mantle wedge. This lowers the melting point of the mantle, and it melts to form magma. This magma will rise and leak into the crust forming a volcano. This process can create a chain of volcanic islands. bluewater phone number grand cayman