Scientists discover missing continent after 375 years
News - 12 March 2024 - Callum Jones GNS Science -
But perhaps one of the most impressive discoveries researchers have made in recent times comes in the form of a missing continent.
Featured Image Credit: Featured Image Credit: GNS Science / Matthew
Lovette/Education Images/Universal Images Group via Getty Images
We all know the seven
continents of the world - Asia, Africa, North America,
South America, Antarctica, Europe, and Australia, of course - but the elusive
eighth continent was once part of an ancient supercontinent nicknamed the
‘great Southern Continent’.
It had been theorized
about since Roman times and was even partially discovered in the 1600s.
Originally including
Western Antarctica and Eastern Australia, the continent confused experts for
many years.
Eventually, answers were
uncovered - but it would take nearly four long centuries for geologists to
finally come to agreement on the new continent.
So, let’s take things
back to the initial discovery.
Satellite image
of Zealandia. Credit: GNS Science
In 1642, Dutch
businessman and sailor Abel Tasman set out to find the
elusive eighth continent - also known as Terra Australis in Latin.
Setting sail from
Jakarta, Indonesia, Tasman eventually landed on the Southern Island of New
Zealand and started to explore.
Before he could set foot
on dry land, he encountered the local Māori who were, well, less than impressed
with the European sailor.
In fact, they were so
frustrated by his presence that they rammed a boat passing messages between the
Dutch ships with a canoe, killing four people.
Having failed to find the
new land, Tasman travelled back home and never returned - ironically, this was
the first time anyone would record information about the mysterious eighth
continent.
Almost 400 years later, GNS geologists announced the discovery of a new continent called Zealandia or Te Riu-a-Māui, in the Māori dialect.
It turns out the
continent, which is roughly 1.89 million square miles (4.9 million sq km) and
had been hiding in plain sight, is mostly underwater.
The scientists
showed how Zealandia pulled away from the supercontinent. Credit: GNS Science
The vast continent had
also been part of the ancient supercontinent of Gondwana, which also included
most of Western Antarctica and Eastern Australia, over 500 million years ago.
However, roughly 105
million years ago, Zealandia began to ‘pull away’ from the supercontinent for
reasons geologists still don’t fully understand.
As Zealandia did this, it
began to sink beneath the waves with over 94 percent remaining underwater for
millennia.
"This is an example
of how something very obvious can take a while to uncover," explained Andy
Tulloch, one of the geologists at the Zealand Crown Research Institute GNS
Science who made the 2017 discovery.
The man who led the
study, Nick Mortimer, joked that it was ‘kind of cool’ and explained why it
took so long for the discovery.
Comments
Post a Comment