in World by (257k points)

Question: The average composition of rocks comprising a large composite cone or stratovolcano is similar to a (an) ________ magma.

Options:

  1.  basaltic
  2.  ultramafic
  3.  andesitic
  4.  rhyolitic

Please log in or register to answer this question.

1 Answer

+1 vote
by (973k points)
selected by
 
Best answer

3. Andesitic

The average composition of rocks comprising a large composite cone or stratovolcano is similar to an andesitic magma.

Andesite is a volcanic rock of intermediate composition. It is a gray to black volcanic rock with between about 52 and 63 weight percent silica (SiO2).

Related questions

...