'Lost Continent' of Zealandia revealed in new maps

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The hidden continent of Zealandia has fascinated scientists ever since the mid-1990s. Now, researchers from GNS Science in New Zealand have mapped the submerged land mass in great detail, showing how tectonic and seismic activity have shaped its evolution.

The islands of New Zealand and New Caledonia are the only visible remnants of Zealandia, which was declared a distinct geological continent in a 2017 paper published in the Geological Society of America's journal.

Zealandia is a fragment of the supercontinent Gondwana, which began to separate from the northern supercontinent Laurasia around 180 million years ago.

Today, 94 percent of Zealandia is submerged. Its highest point is Aoraki, or Mount Cook, in New Zealand, at 3,724 meters, or 12,218 feet.

GNS Science is a geoscience research and consultancy organization owned by the government of New Zealand.

RUNDOWN SHOWS:
1. Zealandia on a map with New Zealand and New Caledonia visible on the surface
2. Depiction of continental drift from the Permian period to the present day
3. Depiction of the ancient supercontinent of Gondwana with portions breaking off to form the continental crust of New Guinea, Australia, Antarctica and Zealandia
4. Depiction of the portions of Gondwana that are above sea level as it breaks up to form New Guinea, Australia, Antarctica and Zealandia

VOICEOVER (in English):

"The islands of New Zealand and New Caledonia are the only visible remnants of the lost continent of Zealandia."

"Zealandia is a fragment of the supercontinent Gondwana, which began to separate from the northern supercontinent Laurasia around 180 million years ago when the Atlantic Ocean formed between what are now North America and Africa."

"Zealandia separated from Gondwana beginning in the Late Cretaceous period. It is considered a continent because it is distinct from its surrounding area and is composed of continental crust, not oceanic crust."

"However, as it began its journey eastward, most of it sank beneath the ocean. Today, 94 percent of Zealandia is submerged."

SOURCES: GNS Science, Geological Society of America, Business Insider
https://data.gns.cri.nz/tez
https://www.geosociety.org/gsatoday/archive/27/3/article/GSATG321A.1.htm
https://www.sciencealert.com/we-now-know-the-true-size-and-shape-of-the-recently-discovered-8th-continent-zealandia