Which of these most directly triggered the main eruption? a. The formation of a bulge on the north slope b. Avalanches of pyroclastic debris c. A massive landslide Mud flows in the Toutle river d. Outgassing of the magma

Question

Geography

Michelle Graham

5 March, 18:47

Which of these most directly triggered the main eruption? a. The formation of a bulge on the north slope b. Avalanches of pyroclastic debris c. A massive landslide Mud flows in the Toutle river d. Outgassing of the magma

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Answers (1)

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Damari Shaffer · Answer 1

Answer: the answer is C,

A massive landslide Mud flows in the Toutle river

Explanation:

There had been many earthquakes in the area prior to eruption but this happen to be a massive land slide because a moving magma have over steepened the mountain slopes ... this geologic process uses gravity to cause rock, soil, artificial fill or a combination of the three to move down a slope. Slow weathering of rocks as well as soil eruption and volcanic activity also causes landslides