The difference between tephra and tuff is that ________.
A) tephra is created in ash falls,whereas tuff is created in pyroclastic flows
B) tephra is unlithified,whereas tuff is lithified
C) tephra is always felsic to intermediate,whereas tuff is always mafic
D) tephra is formed at stratovolcanoes while tuffs are formed at cinder cones
Correct Answer:
Verified
Q1: The cloud that rises from the vent
Q2: Basaltic lavas _.
A)contain more iron and magnesium
Q3: Ash,cinders,and blocks are all types of _.
A)pyroclastic
Q4: Basaltic lavas that solidify at the surface
Q5: The tall polygonal features preserved in the
Q6: The textural term for a basaltic lava
Q8: Rhyolitic lavas _.
A)do not flow as far
Q10: In 79 C.E.,the citizens of Pompeii in
Q11: The characteristic "rotten egg" smell of many
Q11: The image below shows a _,which is
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