Gondwana forming
was a key piece to Pangea and how Earth’s continents are placed and shaped
now. Gondwana also affected how Earth’s
continents and landmasses will be shaped in the future. Gondwana’s final formation finished around 500
mya (million years ago). Gondwana
was also a full half of the supercontinent known as Pangea.
Pangea was made up
of two supercontinents: Gondwana and Laurasia.
The land that was Laurasia had developed over time and is now called Europe,
Asian and North America. By the time of
Gondwana’s break-up, it is now well into the Jurassic period and there are
massive forests everywhere. Gondwana had
scraped against so many landmasses that it created Africa, South America,
Antarctica, and Australia and other small landmasses.
The theory behind
Gondwana’s split is still somewhat unclear.
Some theories of Gondwana splitting include magma rising extremely close to the surface, which
split up the land and caused continents to drift off. The believed theory at the moment though is
that Gondwana drifted over two tectonic plates which when they shifted, broke
apart the continent.
In a recent study,
scientists revealed the past positions of the Indian, Antarctic, and Australian
tectonic plates. These plates relate to
Gondwana because they are what made Gondwana form. Although scientists figured this out, they
are still confused and wondering about how the tectonic plates evolved and
formed. Studies have shown that some of
the tectonic plates should have been in different places than they were when
they have drawn and mapped out the past (Tectonic plates are the scientific
theory of the movement of Earth’s lithosphere, which is one of the layers of
Earth right under the surface). The Royal
Holloway University’s Dr. Lloyd White said, “The Earth’s tectonic plates move
through time. As these movements occur
over many millions of years, it has previously been difficult to produce
accurate maps of where the continents in the past.” What Dr. Lloyd White said means tectonic
plates take an extremely long time to move a minuscule distance of two centimeters per year. Knowing this, we can have a better understanding of the arrangement of tectonic plates in the past and redraw the maps of the past..
Pappas, S. (2013, June 7). What is Gondwana? Retrieved September 23, 2014, from
LiveScience website: http://www.livescience.com/37285-gondwana.html
University of Royal Halloway London. (2013, July 5). Ancient jigsaw puzzle of
past supercontinent revealed. Retrieved September 24, 2014, from
ScienceDaily website: http://www.sciencedaily.com/articles/g/gondwana.htm
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