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Mount Rainier primarily has andesitic lava, which can exhibit characteristics of both Aa and Pahoehoe types. However, the predominant lava flows associated with Mount Rainier are typically more akin to Aa, as they are often cooler and more viscous, resulting in a rough, jagged surface. Pahoehoe, which is smoother and more fluid, can occur but is less common in this region.
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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.
What type of lava forms mt rainer?
Mount Rainier is composed primarily of andesite lava, which is an intermediate type of lava that has a higher silica content compared to basaltic lava. This type of lava is more viscous, leading to explosive eruptions and the formation of volcanic cones like Mount Rainier.
What type of lava results in rocks with a ropy texture?
Pahoehoe lava results in rocks with a ropy texture. This type of lava has a smooth, undulating surface due to its low viscosity.
Which type of basaltic lava has a fairly smooth surface that resembles the twisted braids of ropes?
Pahoehoe lava is a type of basaltic lava that has a fairly smooth surface that can resemble twisted braids of ropes. This lava is characterized by its smooth, ropy texture formed as it flows and cools.
Why does Mount Kilauea have Pahoehoe magma?
Mount Kilauea has Pahoehoe magma due to its low viscosity, which is characteristic of basaltic lava. This type of magma allows gases to escape easily, resulting in the smooth, ropy surface associated with Pahoehoe flows. The relatively low silica content of basalt also contributes to its fluidity, enabling it to spread out easily and form the distinctive, glossy textures of Pahoehoe. Additionally, Kilauea's frequent eruptions and shield volcano structure promote the production of this type of lava.
Lava that forms smooth ropelike coils when it hardens is called?
Pahoehoe
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.
What type of lava forms mt rainer?
Mount Rainier is composed primarily of andesite lava, which is an intermediate type of lava that has a higher silica content compared to basaltic lava. This type of lava is more viscous, leading to explosive eruptions and the formation of volcanic cones like Mount Rainier.
What type of lava results in rocks with a ropy texture?
Pahoehoe lava results in rocks with a ropy texture. This type of lava has a smooth, undulating surface due to its low viscosity.
Which type of basaltic lava has a fairly smooth surface that resembles the twisted braids of ropes?
Pahoehoe lava is a type of basaltic lava that has a fairly smooth surface that can resemble twisted braids of ropes. This lava is characterized by its smooth, ropy texture formed as it flows and cools.
Why does Mount Kilauea have Pahoehoe magma?
Mount Kilauea has Pahoehoe magma due to its low viscosity, which is characteristic of basaltic lava. This type of magma allows gases to escape easily, resulting in the smooth, ropy surface associated with Pahoehoe flows. The relatively low silica content of basalt also contributes to its fluidity, enabling it to spread out easily and form the distinctive, glossy textures of Pahoehoe. Additionally, Kilauea's frequent eruptions and shield volcano structure promote the production of this type of lava.
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.
This type of lava is fluid thin and flows smoothly.?
Pahoehoe
What type of lava is fluid thin and flows smoothly.?
Pahoehoe
What type of cone does Mount Rainier have?
Mount Rainier has built a composite cone.
Are basaltic lavas a pahoehoe lava?
Basaltic lavas can be either pahoehoe or a'a lava types. Pahoehoe lavas have smooth, rope-like textures, while a'a lavas are rough and jagged. The type of lava formed depends on various factors such as temperature, composition, and viscosity.
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.
