Sculptor
Geologists have discovered the secret that gives
dramatic natural sandstone monuments their shape: gravity. By studying cubes of
sand in the lab, they showed that areas squeezed by vertical stress are
protected from erosion, while others wash away. The process had proved
difficult to study, because natural slabs of sandstone erode over millions of
years. The key to the experiments, published in Nature Geoscience, (July 20) was
an unusual "locked sand" dug from a Czech quarry. The study's first author, Dr Jiri Bruthans
from Charles University
in Prague , said
the new study revealed the "Michelangelo" behind some of the world's
most famous rocky landmarks. "The stress field is the master sculptor - it
tells the weather where to pick," he told BBC News. Erosion by wind and
water, it seems, is merely the sharp instrument. The remarkable shapes are
controlled by internal stresses and strains within the rock, applied by the
pull of gravity. BBC; http://www.bbc.com/news/science-environment-28365410
The study
was published on July 20, just a day after the Last Quarter Moon phase, the
chart for which is shown here at Prague .
The following points in the chart deserve to be noted in the context of the
news.
On the
descendant [12cp29] is Pluto [11cp56] in hard aspect to Admetus [28ta52] – the TNP linked with “rocks”.
Pluto is associated with the principle of elemental power that over geological
time causes the breakdown and decay of our
solid Earth and the rocks of which it is composed. We also understand Pluto as
the internal stresses that produce outer change much like the pressure inside
the earth that causes volcanoes to erupt. Its Sabian symbol is extremely
revealing in our context.
Phase 282: An illustrated lecture on natural science, reveals
little-known aspects of life
Keynote: The ability to explore unfamiliar realms
and discover the laws underlying the complex processes of nature.
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