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pahoehoe is smooth and rope like sufaces. Aa is sharp and jaged last pillow lava is pressure billds up in side the lava untill it craks then it pours out forming yet another pillow on the last one.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoPahoehoe and a'a have the same composition. They are described as mafic im composition, meaning a low silica content, low viscosity compared to other compositions, and generally forming dark-colored rocks. They cool to form a rock called basalt.
Wiki User
∙ 9y agoNeither. Pahoehoe and a'a are terns that describe the texture lava flows, specifically flows of low-silica basaltic lava. Pumice is not formed from lava flows, but rather lava ejcted explosively into the air. It is usually formed by moderate to high-silica andesitic or rhyolitic lava.
Wiki User
∙ 12y agoThe differences between pahoehoe and AA lava pahoehoe is fat moving lava and looks like wrinkles curves but smother than AA.Aa is cooler than pahohoe and is all bumpy .
Wiki User
∙ 11y agoPahoehoe lava wrinkles as the lava moves underneath while pillow lava forms rounded lumps like pillows it erupts underwater
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What are the differences between the pahoehoe and AA?
Aa is slower, cooler, and has less sillica than pahoehoe. Pahoehoe is faster and moves quickly, and phoehoe has more silica, and is also darker than Aa
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.
Are pahoehoe and AA produced during explosive eruptions?
Pahoehoe comes from an explosive eruption, whereas AA comes from quiet eruptions.
What types of rock does a volcano make?
That depends on the chemistry of magma the volcano erupts - Basalt, andesite, rhyolite etc. but Generically the rock coming out of a volcano is called lava rock (pahoehoe or aa) but one can also get pumice or ignimbrites.
Is pahoehoe considered pyroclastic debris?
No. Pahoehoe is considered a lava flow. Pyroclastic debris consists of volcanic ash, pumice, and lapilli rather than lava flow material.
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.
Are pahoehoe and AA are produced during explosive eruptions?
Pahoehoe comes from an explosive eruption, whereas AA comes from quiet eruptions.
What are the differences between the pahoehoe and AA?
Aa is slower, cooler, and has less sillica than pahoehoe. Pahoehoe is faster and moves quickly, and phoehoe has more silica, and is also darker than Aa
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.
Are pahoehoe and AA produced during explosive eruptions?
Pahoehoe comes from an explosive eruption, whereas AA comes from quiet eruptions.
Was the Soufriere Hills an AA or a pahoehoe eruption?
Neither. Pahoehoe and a'a are both basaltic lavas (mafic composition). Soufreier Hills erupts andesitic material (intermediate composition). This material took the form of ash and pumice forming pyroclastic flows (which are more like avalanches) rather than lava flows.
Why is it that pahoehoe and AA lava are more frequent in shield volcanoes than in composite volcanoes?
Aa and pahoehoe lavas are both basaltic in composition. The lava from composite volcanoes is likely to be granitic.
What kinds of eruption produces pahoehoe and AA?
Aa and pahoehoe are both produced from basalt lava eruptions. The difference in the two being a difference in temperature. Pahoehoe is a hotter flow, moving more smoothly before cooling into rope-like structures. Aa is a bit cooler, forming solid chunks, but continuing to move.
What makes a rock type of rock?
That depends on the chemistry of magma the volcano erupts - Basalt, andesite, rhyolite etc. but Generically the rock coming out of a volcano is called lava rock (pahoehoe or aa) but one can also get pumice or ignimbrites.
What types of rock does a volcano make?
That depends on the chemistry of magma the volcano erupts - Basalt, andesite, rhyolite etc. but Generically the rock coming out of a volcano is called lava rock (pahoehoe or aa) but one can also get pumice or ignimbrites.
What is a pahoehoe flow?
Pahoehoe lava is a lava type flowing from volcanic eruptions. It is not to be confused with Aa lava. Pahoehoe is smooth and ropy lava, cooling into a ropy texture. Aa, on the other hand, is stony and rough. On another note (take this as you will): I would rather stand on Aa lava because it is cooler, characterised simply by its viscosity. Pahoehoe is at around 1100-12000C, as opposed to 1000-1100 for Aa. Please do not stand in either.
What is the difference between a pahoehoe and AA?
Pahoehoe is so much more smoother and duller than AA, because it travels down a gentler slope. You can drive over Pahoehoe. AA, travels down a much steeper slope, and stumbles over itself, and when it hardens, it becomes VERY SHARP AND RAGGED. You wouldn't even be able to walk on AA lava without seriously messing up your feet.
