a: magma ~
b: home-made fudge
What:
"The same substance emitted from a volcano is rhyolite, and characterizes the explosive Pelee-Krakatoa-St. Helens type of eruption. Actually, dacite is quite predominant at Mount St. Helens. The explosive nature of St. Helens is because the magma is like that of your mother's home-made fudge, as compared to the molasses-type magma emitted by the Hawaiian volcanoes. St. Helens eruptions are quite explosive because "the fudge" caps building pressures up to a point when all hell breaks loose."
Useful?
Writer: Duckster
LCC:
Where:
Date: Sep 8 2014 6:56 PM
# 6345 Critique Analogy