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Author Question: What combination of factors was responsible for the disaster west of Yellowstone National Park on ... (Read 49 times)

karen

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on: Jul 15, 2018
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.

Question 2

The creation of which sedimentary feature is controlled in part by debris flows exiting a narrow canyon?
 
  A) Fluvial
  B) Dunes
  C) Lacustrine
  D) Alluvial fan


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epscape

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: D


karen

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Reply 2 on: Jul 15, 2018
Thanks for the timely response, appreciate it

strudel15

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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