Do all lava flows start out as Pahoehoe or can they start as Aa? Yes or No?Why or why not?
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Answer:
Yes, all lava flow starts out as pahoehoe.
Explanation:
If lava slows, cools, and stops in direct response to the corresponding increase in viscosity only, it retains its smooth ropy lava called pahoehoe form.
If lava is forced to continue flowing after a certain critical relationship > between viscosity and rate of shear strain is achieved, the lava changes to aa.
Answer:
Yes Lava flow that was originally pahoehoe may transform into aa lava but the reverse is impossible — once lava crust is broken it can not return back to smooth and continuous form3. Only low-viscosity (usually basaltic) lava can form pahoehoe.
Explanation:
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