have magma chambers and petroleum fields ever collided, and what has been the outcome?
have magma chambers and petroleum fields ever collided, and what has been the outcome? If they have not, then what has prevented this from happening?
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March 17th, 2010 at 2:20 pm
You are describing world war II
March 17th, 2010 at 2:20 pm
No, they would have not. Oil forms among sediments, while while it doesn’t completely preclude the chance, it makes it very unlikely, as you’d need a hot spot source, not a subduction source. As far as we geologists know, it has never happened. However, if it did, it would be very uneventful. The hydrocarbons would simply be boiled away and morphed into other chemicals by the intense heat. It wouldn’t set the Earth on fire or anything, no explosions, nothing that Hollywood would like to show.
The closest that any petroleum would come to magma would be at a depressed formation depth phase position. But you’d still have kilometers to go before you ever got close to magma.
March 17th, 2010 at 2:20 pm
Well, I think its possible, because the subducting crust is usually full of sediments, and the continental crust, which the volcanoes form on when the oceanic crust is partially melted, whilst sinking into the mantle, is sometimes (actually mostly) composed of sedimentary rocks, which may hold fossil fuels, like oil or coal reserves.
I don’t think it would be a violent "collision", as it would happen in the subsurface, and coal and oil only burns slowly.
I know for a fact that as coal reacts with certain oxidation reagents, like some iron minerals, it burns underneath the crust.