Basaltic lavas ________.
A) contain less silica than rhyolitic lavas
B) contain more silica than rhyolitic lavas
C) are more viscous than rhyolitic lavas
D) typically contain a greater proportion of trapped volatiles than rhyolitic lavas
Correct Answer:
Verified
Q1: Columnar joints form when _.
A) a lava
Q3: Ash,cinders,and blocks are all types of _.
A)pyroclastic
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