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Scientists have made a sensational discovery east of Australia: A 5 million square kilometer continent, and it’s been hiding in plain sight for AGES. Only a small part of the continent—around 5 per cent—is visible today.
Experts say that today, only about 5% of it is visible —which is part of the reason it took so long to discover.
Interestingly, New Zealand and New Caledonia are part of the new continent, which is about as big as greater India, the best part; the new continent could have economic and geopolitical implications as scientists estimate there may be tens of billions of dollars worth of fossil fuels off its coast.
The region is mostly submerged land in the Pacific Ocean and contains both New Zealand and the French overseas territory New Caledonia.
According to reports, the new continent—most likely to be called ZEALANDIA— is the ‘youngest, thinnest, and most submerged’ of the continents, with 94 percent of the landmass submerged in water, the researchers write.
Until now there were six ‘officially’ recognized continents: Africa, Antarctica, Australia, Eurasia, North America, and South America.
According to the scientific paper titled ‘Zealandia: Earth’s Hidden Continent,’ 11 geologists argue that Zealandia has all four attributes necessary to be considered a continent.
Interestingly, the concept of Zealandia isn’t new. In fact, Luyendyk coined the term back in 1995. However, Luyendyk said that it was never intended to be a brand new continent, and the name was merely used to describe New Zealand, New Caledonia, and a collection of submerged pieces and slices of crust that broke off a region of Gondwana, a 200 million-year-old supercontinent, wrote IFLScience.
“This is not a sudden discovery, but a gradual realization; as recently as 10 years ago we would not have had the accumulated data or confidence in interpretation to write this paper,” the researchers wrote in GSA Today, a journal of the Geological Society of America.
Now, researchers behind the study have developed on the idea proposed by Luyendyk over 20 years ago. With two decade’s worth of new data and evidence, they believe that Zealandia meets the four criteria geologists use to deem a slab of rock a continent:
- Land that pokes up relatively high from the ocean floor.
- A diversity of three types of rocks: igneous (spewed by volcanoes), metamorphic (altered by heat/pressure), and sedimentary (made by erosion).
- A thicker, less dense section of crust compared with surrounding ocean floor.
- “Well-defined limits around a large enough area to be considered a continent rather than a microcontinent or continental fragment.”
Geologists had determined that New Zealand and New Caledonia fit the bill for items one, two, and three. After all, they’re large islands that poke up from the sea floor, are geologically diverse, and are made of thicker, less dense crust.
“The scientific value of classifying Zealandia as a continent is much more than just an extra name on a list. That a continent can be so submerged yet unfragmented makes it a useful and thought-provoking geodynamic end member in exploring the cohesion and breakup of continental crust,” wrote scientists in the new study.
When asked about the new discovery and how the man who coined the concept Zealandia felt, Professor Luyendyk told Business Insider: “These people here are A-list earth scientists. I think they’ve put together a solid collection of evidence that’s really thorough.”
“The economic implications are clear and come into play: What’s part of New Zealand, and what’s not part of New Zealand?” he said.
Featured image: Shutterstock