Can you describe a shield cinder and composite volcano?
Can you describe a shield cinder and composite volcano?
Size Differences. Cinder cone volcanoes are relatively small, rarely exceeding 1,000 feet tall. Composite volcanoes, also known as stratovolcanoes, are towering structures, often rising more than 10,000 feet. Shield volcanoes are broad, typically 20 times wider than they are high.
What are the 3 types of volcano according to shape?
Volcanoes are classified by the eruption type and by the volcanic cone shape. There are three basic cone shapes and six eruption types. The three cone shapes are cinder cones, shield cones, and composite cones or stratovolcanoes.
What are the 3 main types of volcanoes and their characteristics?
There are three types of volcanoes: cinder cones (also called spatter cones), composite volcanoes (also called stratovolcanoes), and shield volcanoes. Figure 11.22 illustrates the size and shape differences amongst these volcanoes. Shield volcanoes, which get their name from their broad rounded shape, are the largest.
What are the 4 different shapes of volcanoes?
Geologists generally group volcanoes into four main kinds–cinder cones, composite volcanoes, shield volcanoes, and lava domes.
What is composite cone?
Composite cones are large volcanoes (many thousands of feet or meters tall) generally composed of lava flows, pyroclastic deposits, and mudflow (lahar) deposits, as well as lava domes. Composite volcanoes are active over long periods (tens to hundreds of thousands of years), and erupt periodically.
What are the different types of volcanoes according to shape describe each?
Different Types of Volcanoes
| Type of Volcano | Shape | Height |
|---|---|---|
| Cinder Cone, AKA Scoria Cone | Symmetrical cone | Up to 1,200 feet (370 meters) |
| Shield | Tall and broad | Up to over 30,000 feet (9,000 meters) |
| Composite, AKA Strato | Tall, steep, and symmetrical | Up to 8,000 feet (2,400 meters) |
| Lava Dome | Dome | Up to 330 feet (100 meters) |
What is a composite cone?
Also known as stratocones, composite cones are made up of layers of lava, volcanic ash, and fragmented rocks. These layers are built up over time as the volcano erupts through a vent or group of vents at the summit’s crater.
What shape is a shield volcano?
convex shape
Shield volcanoes have a convex shape as they are flatter near the summit. Shield volcanoes are truly massive with volumes that dwarf other types of volcanoes, even large composite volcanoes.
What are characteristics of a shield volcano?
Shield volcanoes have the following characteristics: Basaltic magma, which is high in temperature, very low on silica and with low gas content. This type of magma produces fluid lava with very little explosive activity. Basic lava, which is non-acidic and very runny.
What are the characteristics of shield and composite volcanoes?
Difference Between Shield Volcanoes and Composite Volcanoes
| Shield Volcano | Composite Volcano |
|---|---|
| The basaltic lava of a shield volcano is runny and is of low viscosity | The lava of a composite volcano is acidic and is of high viscosity |
What is the shape of shield volcano?
Shield volcanoes are tall and broad with flat, rounded shapes. They have low slopes and almost always have large craters at their summits. The Hawaiian volcanoes exemplify the common type of shield volcano.
What is a shield cone?
[shēld ‚kōn] (geology) A cone or dome-shaped volcano built up by successive outpourings of lava.