Im making a drawing for class of the three main volcano types. I get what a shield volcano is but I cant find a difference in a composite and cinder volcano shape!
Drawings/illustrations on websites are appreciated!
Image of cinder cone: http://mivo-sys.tripod.com/images/cinder_cone.jpg
Cinder cones are volcanoes that erupted and the ejecta has gathered around. The cinders are loose pieces of rock that landed near the erupting volcano, thus building up and making the cone shape. Usually look like craters too. Lava will flow in the initial stages of eruption, but the rest will be ejecta, in the form of volcanic bombs and pieces of solid rock.
Composite volcano: http://cgz.e2bn.net/e2bn/leas/c99/schools/cgz/accounts/staff/rchambers/GeoBlogBytes%20Blog%20Resources/Year%209/Volcano_structure.png
Composite Volcanoes are what I like to think of a combination of both cinder cone and shield. These tend to look like the traditional volcanoes, where you have a mountain with a hole at the top, except some tend to not have holes, but dome within the volcano, These are the shape they are due to the lava cooling and building upon itself over time. Some of these with have weakness off to the sides where another opening will occur. When it erupts 2 things can happen, Magma will flow (which usually is fast due to the composition) or pyroclastic flows will result, which is pieces of solid material, gas, and ash that is super hot and flows super fast. Usually can only see ash and gas flowing towards you
Pyroclastic flow image: http://www.holoscience.com/news/img/Pyroclastic_flow.jpg
Image of cinder cone: http://mivo-sys.tripod.com/images/cinder_cone.jpg
Cinder cones are volcanoes that erupted and the ejecta has gathered around. The cinders are loose pieces of rock that landed near the erupting volcano, thus building up and making the cone shape. Usually look like craters too. Lava will flow in the initial stages of eruption, but the rest will be ejecta, in the form of volcanic bombs and pieces of solid rock.
Composite volcano: http://cgz.e2bn.net/e2bn/leas/c99/schools/cgz/accounts/staff/rchambers/GeoBlogBytes%20Blog%20Resources/Year%209/Volcano_structure.png
Composite Volcanoes are what I like to think of a combination of both cinder cone and shield. These tend to look like the traditional volcanoes, where you have a mountain with a hole at the top, except some tend to not have holes, but dome within the volcano, These are the shape they are due to the lava cooling and building upon itself over time. Some of these with have weakness off to the sides where another opening will occur. When it erupts 2 things can happen, Magma will flow (which usually is fast due to the composition) or pyroclastic flows will result, which is pieces of solid material, gas, and ash that is super hot and flows super fast. Usually can only see ash and gas flowing towards you
Pyroclastic flow image: http://www.holoscience.com/news/img/Pyroclastic_flow.jpg
References :
Physical Geology Class
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