Abiotic Hydro-carbons
We talk about ‘fossil fuels’. This is a question
begging term. It simply assumes that oil and natural gas (and coal, for that
matter) are the products of heat and pressure on fossilised plants and animals.
If this is so, it stands to reason that, because a finite quantity of plant and
animal material has existed, we will eventually run out.
I think that this is problematical from several
points of view. Firstly, is this what geologists actually believe? If it were
true, it seems to me, the price of fossil fuels (as I shall now cease to call
them) ought to be rising steeply. As it happens, the price of energy fluctuates
and is presently at a low.
The estimates of recoverable reserves of these
hydro-carbons go up and up. Maybe this contributes to low prices. If we
discovered a huge deposit of, say, copper ore, we would expect the price of
copper to fall.
The second problem is that hydro-carbons are not only
to be found earthside. Astronomers tell us that methane and other hydro-carbons
are detectable in the makeup of comets. Did they originate from biological
material? I don’t think so.
What is more, oil deposits have been discovered at
tremendous depths – tens of thousands of feet below the earth’s surface. Did
pre-historic plants and animals burrow down before dying?
Serious scientists in Russia and The Ukraine (as
well as Thomas Gold of pulsar fame) have another theory. Hydro-carbons, they
say, are constantly being formed in the earth’s mantle. Experiments have
demonstrated that they can be formed in the laboratory and in the absence of
biological material. We know that
decomposing biological matter can
result in the production of hydro-carbons but we also know that that is not the only
way to produce them.
Another piece of evidence supportive of the abiotic
theory is that some ‘exhausted’ oil wells have been observed to have been
replenished.
Energy companies (aka Big Oil) etc certainly would
have an incentive to persuade us that the supply of hydro-carbons is limited.
But what if it is not?
The Greens worry about CO2, produced when
hydro-carbons are combusted. That is an argument for another day. What Greens
do not typically do is to rejoice
that fracking produces fuels that emit less carbon and other ‘pollutants’.
I am not certain that the abiotic theory accounts for
all or most of the fuel we get from the ground. I am certain that it should be
better known and that a serious debate should take place. If it is indeed true,
then we should rejoice. The possibility of virtually limitless energy bodes
very well for developing nations, whose women and children suffer serious
respiratory diseases from burning wood and animal dung.
No comments:
Post a Comment