Mt St Helens Erupts Again (2004 -2008)

Question 1

Sequence of Events

Answer 1

1. Increased Earthquake Activity (September 2004)
2. 4 Explosions (October)
3. Glacier Deformation, Lava Spine Emerges (Lava erupted from Conduit mostly solid)
4. Continued, Steady Dome Growth until December 2008

Question 2

When was the eruption most active?

Answer 2

2004 and 2005

Question 3

How does the magma compare to 1980 magma? What does this entail?

Answer 3

The new magma was more flat and had less gas which suggest it could be residual magma from the 1980 eruption (small sulfur composition)

Question 4

Bathtub Rings

Answer 4

Record dome growth; molten lava that is drained back into into vent which leaves ring marks