I am curious to see what people think of the abiotic theory of oil deposit formation versus the traditional theory.
I have long wondered how enough organic material became trapped underground to degrade and form oil deposits. Especially when you consider the shear amount of oil that we have found underground over the decades. And considering how much oil we use. If you think about it, when most critters die the tend to decompose mostly or fully above ground. So I have trouble believing that such large amounts of oil, especially in such large concentrations, have formed from dying plants and animals over the centuries.
Recently I heard about the theory of abiotic oil. My understanding of the theory is that oil deposits are actually chemicals and material that is formed at the mantle boundary that seeps up further into the crust where it is consumed by micro-organisms that process it and turn it into what we know as oil. My understanding may be a bit off I realize.
But some evidence of this has been presented in the form of old, capped oil wells that after a few decades, when re-examined, seem to be full once more and are now run at full pumping capacity once more. There are other things I have read as evidence. It seems to me that this would be a better explanation for the large amounts of oil deep underground.
Does anyone know enough about these subjects to say that one theory holds more water than the other? Has there been any new evidence pointing to one or the other theory more?