History of Geoscience
Recently at a major
German Research facility a talk relating to the micro-, meso- and macro- scales
of research in Earth Science was delivered. It was interesting to note how we,
as geoscientists, are integrating multiple tools in order to better understand
the world around us and thus in turn improve society as a whole. Possible future
projects were also outlined and these delved into the unknown. The real
personal question which arose is: Where did all of this thinking originate?
In order to
properly understand geoscience one has to delve into the past and see
where the thinking originates from, how it has developed and consequently what
has moulded our thinking. It is critical to note that great
geoscientists of the past were not necessarily geoscientists by classification
and looked at problems from a holistic viewpoint. These great minds were
keen observers, thinkers and in many cases philosophers and mathematicians with
an interest in the world around them.
The Pyramids at
Giza, in Egypt, are a prime example of the applied geosciences. The stones were
sourced from another location, due to the fact that the designers knew of the
ability of the material to withstand the elements. Furthermore the exact
design, orientation and location of these ancient wonders allows one to believe
that applied geological science was in existence some 3000 years before Christ,
but nobody had the nomenclature in order to classify it. When standing in the
presence of these structures, armed with this knowledge, one can only stare in
awe and only imagine how, when and where the idea for these magnificent structures
came about. Everything about these three large pyramids is amazing. This leads
you to question whether the deeper understanding of the magnificent history of
science could guide our future applications.
When one looks into
the annals of history we find that as early as 300 BC in Ancient Greece
Theophrastus, who was a student of Aristotle and Plato, was examining concepts
relating to geological science. He was a philosopher and deep in thought about
processes on the earth. His ideas were guided by those of Aristotle who made
critical observations of the slow rate of geological change. Furthermore
his teacher also hypothesised what happens to water below the subsurface. It is
interesting to note that the basis for earth science as we know it was deep
thought observation and critical analysis.
Approximately 1300
years later Ibn Sina commented on the work of Aristotle and further delved into
these surface processes, mountain formation, sources of water, formation of
minerals and the origin of earthquakes. Thereafter Shen Kou, who was also a
naturalist, proposed the modern theories of Geomorphology. This Chinese
scientist, who dabbled in many fields, observed surface processes and the
erosion of mountains as well as the consequent deposition of materials in the
ocean. From a better understanding of these processes we have learnt to
understand the formation of offshore mineral resources and thus extract them.
The initial applied
use of geological science related to the extraction of resources, as previously
mentioned. This can be seen from the oldest gold mine in the world in Georgia,
which supposedly dates back to the third millennium B.C. This application in
turn affected where we situate our dwellings, the materials used to
construct these dwellings, as well as the relationship/impact we had with/on
the immediate (surrounding) environment. It is a known fact that settlements
were located along rivers in order to minimise the amount of time spent on
collecting water. This life source also caused destruction when
flooding occurred, yet we persisted to reside on the floodplain.
More recently and
closer to home, due to the groundwater resources supplying the majority of the
country’s freshwater, Henry Darcy became the father of hydrogeology in 1856. He
examined flow in saturated porous media in the water supply of Dijon, France
and then announced a law named after him.
Thus heralded an
era of French Mathematics, particularly applied to the earth sciences, which
we have never seen before. Charles Matheron, Benoit Mandelbrot and Pierre Gy
all looked at problems related to understanding the earth. Thus it is clearly
evident that a rich history of geoscience has led to the point whereby we are
at the cutting edge of great discoveries and intergration of knowledge. The
future is so bright I have to wear shades
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