reply to post by PuterMan
I just got some info on a scientific study into the hot springs.
The origin of the hot springs has been
debated since the time of Dunbar and
Hunter’s visit in 1804. Most
explanations have focused on one of
two alternatives: Do the waters rise
from hot magmas at depth? Or are they
originally rainwater which has
percolated down deep into the earth’s
crust, there to be heated by some
unknown process? Over the last
several decades, sensitive chemical
techniques have been developed that
provide some of the answers to these
questions.
The water of the hot springs, like all
water, is made up of the elements
hydrogen and oxygen in the form,
H2
O. Each of these two elements has
closely similar forms known as
isotopes. Geochemists at the United
States Geological Survey have
measured with great accuracy the
abundance of the isotopes of
hydrogen and oxygen in the spring
waters. By comparing these results
with the results obtained by analyzing
large numbers of different kinds of
waters from all over the world, these
scientists conclude that this water now
flowing from the hot springs is not
water given off by cooling magmas at
depth. It is, in fact, rainwater.
Furthermore, analyses of carbon- 14,
another isotope present in the water,
indicate that this rainwater originally
fell in the Hot Springs area some four
thousand years ago.
How does four thousand year old
rainwater become heated to an average
temperature of 143
o
F (61
o
C)? The
answer is still speculative. We do
know that the temperature of the
earth’s crust increases with depth. The
average increase worldwide in on the
order of 3- 5
o
F (2- 3
o
C) for every
additional 300 feet of depth and is due
to the release of heat by the natural
radioactive decay of potassium,
uranium and thorium in the crust as
well as from compression of the
planet’s interior by gravity. We can
heat rainwater simply by letting it
percolate downward to the desired
depth and temperature. If we can then
make this heated water rise back up to
the surface rapidly, so that it doesn’t
have a chance to cool, we will make a hotspring. Sorry no backspace key