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  • 5 months ago
Recent magnetic data reveals that Africa is slowly splitting apart along a massive rift, which could eventually lead to the formation of a new ocean separating the continent into two. This geological process, taking place over millions of years, is unprecedented in scale and could reshape the geography of the region dramatically. 
Transcript
00:00Africa is literally tearing apart.
00:02Geologists say that the African continent is slowly splitting into two massive pieces.
00:06A process that began tens of millions of years ago and continues even today.
00:11So what is actually happening beneath our feet?
00:14Researchers from Keele University in the UK have been studying magnetic data
00:18that reveal how this split began, specifically between African and Arabian plates.
00:24Now these two landmasses were once locked together like puzzle pieces.
00:28But over time, tectonic forces, those same ones that move continents, started pulling them apart.
00:34Imagine unzipping a jacket from northeast to south.
00:38That's how the rift is spreading, accompanied by volcanic eruptions and earthquakes.
00:43Now it is a slow motion breakup on a continental scale.
00:47And yes, when it's all done in maybe 5 to 10 million years,
00:51Africa will have transformed into two separate landmasses.
00:55The larger one to the west will include countries like Egypt, Nigeria, Ghana, Algeria, and Namibia.
01:02And the smaller one to the east will carry Somalia, Kenya, Tanzania, Mozambique, and parts of Ethiopia.
01:10Now between them, a brand new ocean will eventually form,
01:14just as others did millions of years ago through a process called seafloor spreading.
01:20Now this is all part of plate tectonics, the grand theory explaining how Earth's crust shifts over geological time.
01:27The same process that once is split apart the giant supercontinent Pangea,
01:32meaning all of Earth's landmasses, will now sculpt the Africa of the future.
01:36The east African rift is at the heart of this story.
01:39Stretching over 4,000 miles from Jordan all the way down to Mozambique,
01:43it's one of the planet's most dramatic tectonic features.
01:47Drift cuts through massive lakes, Turkana, Tamanakia, and Malawi,
01:51and is constantly reshaping the terrain.
01:53But the real hotspot, scientists say, is the Afar region of northeastern Africa,
01:58where the Red Sea, the Gulf of Aden, and the main Ethiopian rift intersect.
02:03Now this triple junction is something of a geological crossroads.
02:06Here the Earth's crust is so stretched that it's beginning to crack apart,
02:10creating fissures and valleys visible even from space.
02:14That's where the key researchers focused their study.
02:17They dug into old magnetic data from surveys done in the late 1960s.
02:21And yes, 50-year-old records I'm talking about.
02:25And they used these records into modern computer models to re-analyze them.
02:30What they found is striking.
02:31The magnetic fingerprints buried in the rocks matched those seen in oceanic crust created at mid-ocean ridges.
02:37Now when Earth's magnetic poles flip, something that happens every few hundred thousand years,
02:43they leave behind magnetic strips in the crust.
02:46The researchers found those strips between Africa and Arabia,
02:49proving that seafloor spreading has already begun there.
02:53Now it's like reading the Earth's diary through magnetic ink.
02:56Dr. Emma Watts, a geochemist at Swansea University, says that the rift is widening at a rate of about 5-16 mm per year.
03:04Those slower than your fingernail grows, but it's powerful enough to one day reshape continents.
03:10So no, you won't wake up tomorrow to find a new ocean between Kenya and Ethiopia,
03:15but our planet is always moving, always evolving, even when it feels rock solid.
03:21And in Africa's case, that slow movement is writing the next chapter of Earth's geological story.
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