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8 December, 11:03

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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  1. 8 December, 14:01
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    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
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