Columnar jointing is a type of fracturing that occurs in andesitic and rhyolitic lava flows.
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Q4: Ash,cinders,and blocks are all types of _.
Q5: Most terrestrial volcanic glass _.
A)is highly silicic
Q6: Olympus Mons,the largest known volcano in the
Q7: Gases that are abundantly emitted by volcanoes
Q8: Basaltic lavas _.
A)contain more iron and magnesium
Q10: In 79 C.E. ,the citizens of Pompeii
Q11: Mafic magmas are distinguished by _.
A)light coloration
B)low
Q11: The characteristic "rotten egg" smell of many
Q13: Basaltic lavas that solidify at the surface
Q14: The smoky cloud that rises from the
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