in World by (257k points)

Question: What volcanic events formed Crater Lake, OR? When did they take place?

Options:

  1.  A powerful explosion blew away the top of a stratovolcano; 10 million years ago.
  2.  The crater of a large, extinct cinder cone filled with water; 5 million years ago.
  3.  Landslides and volcanic mudflows dammed the Mazama River; 500 years ago.
  4.  Caldera collapse followed major ash and pyroclastic-flow eruptions; 6000 years ago.

Please log in or register to answer this question.

1 Answer

0 votes
by (973k points)
selected by
 
Best answer

4. Caldera collapse followed major ash and pyroclastic-flow eruptions; 6000 years ago.

Volcanic events formed Crater Lake was Caldera collapse followed major ash and pyroclastic-flow eruptions. It take place 6000 years ago.

Related questions

...