This is interesting and adds a little new information to tease us. However, i do want to say something. This is very preliminary, but i no longer wish to discount the possibility of physically sinking a shaft using gravity control tools and exotic heat management. I still do not know how, but i do know that the possibility can no longer be discounted with our initial discoveries regarding the nature of gravity.
The key is the simple removal of gravitational influence a short distance into the rock itself. This allows the rock to popcorn back into the shaft collar and to be continuously removed while carrying off heat as well. Flushing with water could easily accelerate the process. This could be done one mile at a time while producing operations chambers at each step.
Gravity managemnet is a dark matter function which means it operates pretty independently of the matter we are used to. At the same time it is incompressible as well. Thus i do not wish to blindly dismiss deep core penetration at all. Most certainly we will be able to treat the first ten miles as our back yard rather soon.
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Heart of Earth's inner core revealed
Lying 5,000km beneath our feet, the core is beyond the reach of direct investigation
Scientists say they have gained new insight into what lies at the very centre of the Earth.
Research from China and the US suggests that the innermost core of our planet has another, distinct region at its centre.
The team believes that the structure of the iron crystals
there is different from those found in the outer part of the inner core.
The findings are reported in the journal Nature Geoscience.
Without being able to drill into the heart of the Earth, its make-up is something of a mystery.
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Prof Xiaodong Song University of Illinois at Urbana-ChampaignThe fact we are discovering different structures... can tell us something about the very long history of the Earth”
So instead, scientists use
echoes generated by earthquakes to study the core, by analysing how they
change as they travel through the different layers of our planet.
Prof Xiaodong Song, from the University of Illinois at
Urbana-Champaign said: "The waves are bouncing back and forth from one
side of the Earth to the other side of the Earth."
Prof Song and his colleagues in China say this data suggests
that the Earth's inner core - a solid region that is about the size of
the Moon - is made up of two parts.
The scientists believe the Earth's inner core is composed of two parts
The seismic wave data suggests that crystals in the "inner
inner core" are aligned in an east-to-west direction - flipped on their
side, if you are looking down at our planet from high above the North
Pole.
Those in the "outer inner core" are lined up north to south, so vertical if peering down from the same lofty vantage point.
“Start Quote
Prof Simon Redfern University of CambridgeProbing deeper into the solid inner core is like tracing back in time, to the beginnings of its formation”
Prof Song said: "The fact we are
discovering different structures at different regions of the inner core
can tell us something about the very long history of the Earth."
The core, which lies more than 5,000km down, started to
solidify about a billion years ago - and it continues to grow about
0.5mm each year.
The finding that it has crystals with a different alignment,
suggests that they formed under different conditions and that our planet
may have undergone a dramatic change during this period.
Commenting on the research, Prof Simon Redfern from the
University of Cambridge said: "Probing deeper into the solid inner core
is like tracing it back in time, to the beginnings of its formation.
"People have noticed differences in the way seismic waves
travel through the outer parts of the inner core and its innermost
reaches before, but never before have they suggested that the alignment
of crystalline iron that makes up this region is completely askew
compared to the outermost parts.
"If this is true, it would imply that something very
substantial happened to flip the orientation of the core to turn the
alignment of crystals in the inner core north-south as is seen today in
its outer parts."
He added that other studies suggest that the Earth's magnetic
field may have undergone a change about half a billion years ago,
switching between the equatorial axes and the polar axis.
"It could be that the strange alignment Prof Song sees in the
innermost core explains the strange palaeomagnetic signatures from
ancient rocks that may have been present near the equator half a billion
years ago," he added.
"For the moment, however, the model proposed in this paper
needs testing against other ways of analysing the seismic properties of
Earth's innermost core, since no other researchers have previously
considered evidence for the same conclusions in their studies."
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