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What are the differences between pahoehoe and AA What kind of eruption produces these type of lava?
The differences are that Pahoehoe produces fast moving lava; Aa produces slower moving lava. The kind of eruption that produces these types of lava is a quiet eruption.
Which types of eruptions produce pahoehoe lava?
Pahoehoe lava is typically produced during effusive, non-explosive eruptions that have low viscosity and high temperatures. These types of eruptions are commonly associated with shield volcanoes, where the lava flows smoothly and forms a ropey or wrinkled surface as it cools.
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 type of volcanic eruption that occured?
They indicate that an eruption is effusive rather than explosive.
What do lava flows made of pahoehoe and AA indicate about the type of volcanic eruption the occured?
They indicate that an eruption is effusive rather than explosive.
Lava that forms smooth ropelike coils when it hardens is called?
Pahoehoe
What are the differences between pahoehoe and Aa what kind of eruption produces these types of lava-?
Pahoehoe is hot, fast-moving lava that has a low viscosity. AA lava has a cooler temperature and moves more slowly. Quiet eruptions are the type that produce these two types of lava.
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 flow made of pahoehoe and AA indicate about the type of volcanic eruptions that occured?
It was a quiet eruption and it was low in silica
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.
What is the difference between pahoehoe and lava?
Pahoehoe is faster moving lava and AA is slower moving lava. Both types are found in basaltic type eruptions. They have different appearances. Pahoehoe is smooth and ropey where as AA is chunky and rough.(much like top of trees) Often a pahoehoe flow can change to an AA flow depending upon the type of slope it encounters. The steeper the slope the more likely AA lava will be present. Aa has more viscosity than Pahoehoe.
