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No. Many shield volcanoes produces pahoehoe.
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∙ 11y ago
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What do lava flows the made of pahoehoe and AA Indicate about the type of volcanic eruption that occurred?
Lava flows of pahoehoe and aa indicate that the eruption was effusive ("quiet") rather than explosive, or only very mildly explosive.
What do lava flows made of pahoehoe and AA indicate about the the type of volcanic eruptions and occurred?
Lava flows of pahoehoe and aa indicate that the eruption was effusive ("quiet") rather than explosive, or only very mildly explosive.
What do lava flows made of pahoehoe and AA indicate about the type of volcanic eruptions that occurred?
Lava flows of pahoehoe and aa indicate that the eruption was effusive ("quiet") rather than explosive, or only very mildly explosive.
What do lava flows made of pahoehoe and a indicate about the type of volcanic eruption that occurd?
The lava structures of a'a and pahoehoe indicate the viscosity (resistance to flow) and temperature of the lava as it was erupting. The pahoehoe structures form when the lava is more fluid and hotter and a thin crust is able to congeal before deformation by the heat of the interior of the flow. The a'a structures form when the lava is slightly cooler and less fluid as it travels downslope. A pahoehoe-forming lava can cool and become an a'a lava as it travels downslope, losing heat and becoming more viscous (less fluid). It doesn't so much tell us about the eruption itself as it tells us about the temperature and viscosity of the lava.
Does mt st Helens have pahoehoe or AA lava?
Niether. Pahoehoe and a'a are both varieties of basaltic lava. The material from Pinatobo is of a dacitic composition, which is much more viscous than a'a or pahoehoe. It tends to erupt explosively, producing ash and pumice rather than lava flows. When dacitic lava does flow it creates a block lava flow.
Is a composite volcano made of Aa lava?
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 type of lava does Mount Klyuchevskoy have?
Aa (ah-ah), I think. The lava is rather liquid, unlike pillow or pahoehoe (pah-hoy-hoy). This may be incorrect, but its the best answer I can give and the only I can find. I hope this answers you query. :D
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What material is only found in continental crust?
Lava
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Mt. Vesuvius is the only active volcano in continental Europe. It is 4,190 feet tall and is a composite volcano. A composite volcano is composed of a mix of layers of lava flows, volcanic ash and cinders.
