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Question
What combination of factors was responsible for the disaster west of Yellowstone National Park on August 17, 1959?A) Rock falls filled a lake with debris until the water overtopped the dam and eroded through the concrete.
B) Water migrating along foliation layers in the metamorphic rock destabilized a dam, which collapsed and flooded the valley.
C) A severe earthquake triggered a slide that blocked a river and flooded a campground.
D) Drainage from the reservoir generated a lahar, which destroyed small towns downstream.
Answer
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Related questions
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A) Life
B) Water
C) Rock
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B) 70,000 years
C) 10,000 years
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Q:
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