Geological Movie Review Of Dante's Peak - Part 8

Dante's Peak - Overview - Some questions asked (and hopefully answered) above -Which volcano and eruption is depicted in the first sequence of the movie?.Are mud rain and lava bombs typical of large scale eruptions and what are they anyway?Do eruptions happen in hot springs before surrounding areas and what is the result of an eruption in a spring? Are acidic lakes common in volcanically active areas and how acidic is normal? Do trees get killed off near an active volcano in real life?What is ELF and what does it stand for? What are microquakes and are 25-75 really a common occurrence?What is the size of the eruption that is associated with a particular earthquake?How acidic is it possible for a lake to get and is this strong enough to melt a metal boat?What is a lahar?

- Overview (or important thoughts to take home) -

This is one of the most scientifically accurate geology movies out thereThe most likely eruption at the beginning of the movie is the 1985 eruption of Nevado del Ruiz placing the remaining events of the movie in 1989This conflicts with his mentioning of Mount Pinatubo which erupted in 1991The Cascadian Range has lots of volcanoes that can produce this type of eruptionSigns of an impending eruption: Increased amount of gas released, increased earthquakes especially harmonic tremors, lava dome growth and increase is acidity of local water sources (lakes, hot springs, etc.)Predicting actual eruptions is hardThe Dante's Peak eruption would not have produced that kind of lava flowAn aluminum boat would melt in an acidic volcanic lake but so would the fish and the entire motor rather quicklyMy personal opinion places the lahar on the first day of eruption since most of the ice and snow should already have meltedThe pyroclastic cloud occurred almost exactly as it would in real life, showing that it is the most dangerous part of a volcanic eruptionELF is a fabrication of the movie because any real-life ELF transmitters have at least a 10km long antenna

- Non-Geological Notes -

In all that ash why are none of the people wearing anything over their mouths? You would think that would be the first thing you did.So why doesn't Grandma wait until she is 3 feet from shore to jump into the lake when it truly was not necessary. Oh wait, she did.Driving on a fresh lava flow? Other than fun, the truck would probably blow up before you even got 1/2 way across.