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No. If a'a is present it will usually be only a minor portion of the volcano. A'a and pahoehoe are low-viscosity lavas with a low silica content They are usually found in shield volcanoes. A composite volcano is usually primarily composed of composed of tepha (loose ash, pumice, and lapilli), tuff (welded ash), and block lava (very viscous lava flows). This material is usually more viscous with more silica than what goes into a'a and pahoehoe.
What else can I help you with?
Does a composite volcano have an Aa type of lava?
A'a can occur at composite volcanoes, but block lava flows, which are far more viscous, are more common.
Is Mt Erebus an active volcano?
It is a lava flow, and has an AA (ah-ah) lava flow
Does the cotopaxi volcano have AA or Pahoiehoie lava?
Both.
What features may occur when volcano lava cools at the surface?
When volcano lava cools at the surface, it may form different features such as lava rock formations like basalt columns, lava tubes, and aa or pahoehoe lava flows. These features depend on the cooling rate and composition of the lava.
Why is it that pahoehoe and AA lava are more frequent in shield volcanoes than in composite volcanoes?
Shield volcanoes have low viscosity basaltic lava, which typically creates pahoehoe and AA lava flows due to their ability to flow easily. Composite volcanoes have higher viscosity lava, such as andesitic or dacitic, which tend to form thicker and blockier lava flows rather than pahoehoe and AA flows.
What lava does a shield volcano erupt poehoehoe or AA?
Usually both.
What kind of lava does Haleakala have?
it has aa lava, so it is not fluid like, but still basaltic.
Who tall is AA volcano?
A'a is not a kind of volcano. A'a is a texture that a lava flow can take on, characterized by a surface covered in sharp fragments. There is no particular height to the lava flow, or height of volcano from which such a flow erupts.
What types of lava come from the San Cristobal volcano?
The San Cristobal volcano in Nicaragua primarily produces basaltic lava, which is low in silica content and flows easily. This type of lava typically results in effusive eruptions with lava flows that can travel long distances from the volcano. The lava from the San Cristobal volcano tends to be relatively fluid and forms shield volcanoes.
Layers of thin runny lava that flow over a wide area before they cool and harden can build up what?
Layers of thin runny lava that flow over a wide area before they cool and harden can build up lava plateaus or volcanic fields.
What ate the differences between pahoehoe and Aa what kind of eruption produces these types of lava?
Pahoehoe and AA lava are produced by quiet eruptions. This means that instead of a blast or explosion, the lava just flows out of the volcano. Pahoehoe lava is hot and flows quickly. AA lava is cooler in temperature and doesn't flow as quickly.
What is the difference between pahoehoe and AA lava?
The difference between Pahoehoe lava and AA lava is that pahoehoe lava is smooth and AA lava is jagged.
