Types of Volcano

• Cinder Cone Volcanoes

  Simplest type of volcano
• Cinder Cone


  Lava is thrown into the air, which breaks into small fragments that solidify and fall around the vent to form a circular or oval cone.
• Most cinder cones have a steep slope, wide crater and are the most abundant of the three major volcano types.
• Composite Volcanoes

  Stratovolcanoes
• Composite Volcano


  large, typically steep sided, symmetrical cones of large dimension formed from alternating layers of lava flows, volcanic ash, cinders, blocks, and pyroclastic materials.
• Conduit System


  One of the most important feature of a composite volcano
• Composite Volcanoes


  They are formed from viscous, or sticky, lava that does not flow easily.
• Shield Volcano


  built almost entirely of fluid lava flow thus these volcanoes are not steep.
• Shield Volcanoes


  The lava is not accompanied by pyroclastic materials, which makes shield volcanoes relatively safe
• Shield Volcanoes


  Eruptions at shield volcanoes are only explosive if water somehow gets into the vent.
• Active Volcanoes


  have had at least one eruption during the past 10,000 years.
• Active Volcanoes


  They are those that erupted recently and still showing regular activity like emission of gases, lava and ash flows.
• Inactive Volcanoes


  have not erupted for the last 10,000 years and is not expected to erupt again in a comparable time scale of the future.
• Inactive Volcanoes


  There are no signs of volcanic activity for a long period of time because magma supply is cut off.
• Inactive Volcanoes


  the physical form of the volcano has signs of intensive weathering and erosion.