An old island has been discovered by accident under the sea full of rare land. The problem is that it has no owner

We are approaching a point where to say that rare earth moves the world in general, no Only the technological oneno longer sounds so hyperbolic. It happens that a single nation has most of the cake right now. We already said it, China has built The most elegant economic power lever in modern history with those desired minerals. Hence, the rest of the nations strive to find the new “gold” where there is a track, however small.

An underwater island has emerged as possibility, the problem is for whom.

An accidental finding. The story began when an international team of scientists discovered that a part of the known underwater highlands Like Rio Grande Riselocated about 1,200 kilometers from the coast of Brazil, it was actually A tropical island Tens of millions of years ago.

Although training was already known by the scientific community as a chain of volcanic mountains submerged from The late cretaceousthe New research revealed that their western part was once above sea levelforming a terrestrial ecosystem that gradually disappeared under the waters due to tectonic activity and the weight of the accumulated volcanic rock. Revelation not only transforms the understanding of the paleoclimatic geography of the region, but also opens the door to a possible International dispute for its valuable mineral resources.

The keys of the past. The discovery began in 2018 when British and Brazilian scientists noticed that certain rocks in the marine bed of the Rio Grande Rise They showed an unusual composition, more similar to lava deposits and terrestrial red clay than to marine formations. Published subsequent studies in Scientific Reports They confirmed that this clay (rich in kaolinite, hematite and goetite, typical tropical soil minerals) was not only a rarity in the oceanic background, but an unequivocal evidence that this segment of the high plateau was emerged between 44 and 47 million years agoduring The Eocene.

With a very high chemical alteration index (93), these clays reveal an intense subaéreal weathering and a warm and humid climate, with implications that go beyond geology: the island could have been a stop point For migratory birds Between South America and Africa, offering one more piece in the puzzle of the biological exchanges of the past.

A mineral treasure. But there is more, of course. Beyond its scientific value, the Rio Grande Rise houses an invaluable economic wealth. Their Ferromanganese scabs contain high levels of Essential metals As cobalt, nickel and lithium, all fundamental for the global energy transition, from batteries for electric vehicles to wind and solar energy storage.

However, what attracts the most attention is your rare earth concentrationespecially the ititrium, a whitish and soft metal used in strategic technologies: aerospace alloys, superconductors, industrial lasers, LEDs and precision lenses. In a context where China overwhelmingly dominates the extraction, refined and manufacture of these materials (with Up to 90 % of world production), any new source acquires critical geopolitical importance. It is no accident that the Brazilian interest in this area has intensified after Beijing’s decision to restrict export.

The dilemma of sovereignty. And here lies the big problem. The Brazilian government He has shown A clear intention to claim the Rio Grande Rise as part of its continental platform, based on the argument that training He was united to the continent in the past. However, the highlands is 652 nautical miles from the coast, very outside the limit of The 200 established by the United Nations Convention on the Law of the Sea to delimit exclusive economic zones.

This raises a challenge legal and diplomatic Complex, in which Brazil will seek to strengthen its exploration rights without violating international agreements. At the same time, warnings arise on the impact that an eventual mining exploitation could have little studied in depth ecosystems. Thus, the tension between the economic use of these resources and the need to preserve marine biodiversity appears as unresolved background dilemma.

Global competition. In this way, the ancient island of Rio Grande Risetoday hidden under kilometers of water and centuries of geological oblivion, has reappeared as a Unexpected actor in the race for the strategic resources of the 21st century. Fosilized red soils, formed under disappeared tropical jungles, now lie next to metal scabs coveted by industries around the world.

If you want, the finding not only highlights the scientific value of oceanic missions, it also exposes the growing global competition for those critical minerals in so many areas. In that new power map, where the control of raw materials marks the border between technological independence and structural dependence, even a sunk island millions of years ago can tip the balance of the future. Or at least that Think Brazil.

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