#supervolcano #volcanology #geology #earthscience #earthsciences #geography #oceanic #ocean #arctic #volcanoes #volcanoeruption #geoscience
The Gakkel Ridge Caldera is one of the largest supervolcanoes to have ever erupted on our planet. This massive super volcano is single handedly rewriting what we know about volcanoes, as it’s the only super volcano to exist in the mid oceanic ridge. Which is normally only associated with fluidic basaltic eruptions, not explosive ones, like this one was.
The most recent mega eruption that occurred here was larger than Toba. And you can bet it had far reaching implications when it occurred
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And we found Atlantis. Here it is.
Plato said it was far to the north in a land called Hibernia
THANKS great coverage a surprising aspect of rifts.
JG from Pennsylvania
There’s more than that one dude
Yes very interesting also the krakatoa just erupted a few hours ago…
Cool thanks for sharing. Sooner or later, you should seriously consider all the evidence you can in view of the expanding Earth theory. Plate tectonics is only one possible explanation and it has many limitations (such as being false). 😉
Well, good thing this rift doesn’t expel any heat into the Arctic Ocean!
Ok, interesting take on that cauldera. However, has it ever occurred to anyone besides myself that Iceland, technically, could be described as a hypervolcano? Multiple caulderas, but essentially, all coming from the same source of magma. While the chance of the entire island e placing like a standard super volcano are at worst, very, very slim, the fact that it could have multiple fissures and could era erupting over an extended timeframe, is something I consider with concern. I doubt that we could be seeing something on the scale of either the Decay or Siberian Traps, coming into existence, the potential devastation that could be created, does seem to require further study.
Thanks for a great show
The map shows the caldera located at the end of the mid-Atlantic ridge. Would that have a role in the existence of the caldera?
cheers for the well presented content
Could it be related to the hotspot that produced the Siberian Traps?
Here's a question I've had on my mind for a little bit now, so if we have multiple mid-ocean ridges and similar separation of the plates on land were the plates are separating does that mean that the Earth is also growing in diameter when it's doing this?
Gotta wonder what a large underwater eruption does to ocean chemistry
One million years ago was the height of the Pleistocene glaciation. An Antarctic-scale ice sheet centered on Hudson Bay covered North America to a thickness of two miles or more and probably spread out into ice shelves on the order of Ross or Weddel. Might they perhaps have been grounded on the Gakkel Ridge? And might this explain both the existence of such a volcano and its anomalous eruption?
what's the seismic activity like up there?
I watch these videos frequently and I was randomly following faults on my earthquake app (don’t know why I do sometimes 🤷🏻♂️) and noticed the group of faults in the Arctic Ocean and went to YouTube with little luck till I realized OZ literally just did a video on it, but for a reason I didn’t first expect. I love that. New volcano vid whoop
It seems to me that "the two plates moving apart at a very slow rate“ can’t be said to „form anything“ – let alone a volcano. Aren’t they innocent like two curtains parting to show the real shooter in the room behind?
I watched a few of the expanding earth theory vids and the Atlantic and Pacific ridgelines that are floating around out there on you tube. This one almost adds answers to those. Cool Video thanks!
Please, one request to not use expressions like "the magma rises because of buoyancy". Hot matter is pushed up by the denser material. It's not like it seeks to escape as that it can be squeezed out by the underlying denser matter, which in turn is being squeezed by the hotter material beneath it.
this is not a "new" lesson about volcanism. frenetic explosions are very common and very destructive. sorry to have this be the first and last piece of yours, both inaccurate and in researched. Ta ta.
Could the proximity of the plate boundary to the caldera be coincidental? The hot spot location being stable. Could that hotspot been responsible for the Siberian Traps volcanic province and it’s location has moved to its present location? Just asking, I’m not a geologist?
That’s way above the tree line.
Some important things to note – we, as yet, do not understand the following about ANY supervolcano.
1: Why they form
2: How they form:
3: How they erupt – we assume a single massive event, but it is possible that different systems erupt in different ways, with possible smaller eruptions over an extended period rather than a single event – there is some evidence that Toba may have undergone repeated partial collapses and eruptions before the whole thing created the lake we see today – eaully, it appears that Yellowstone produced each caldera in multiple eruptions over several thoudand years – still massive eruptions each one mind – rather than a single event for each caldera.
What we do know is that each is associated with a superplume – shield volcanoes are associated with plumes of magam from depper with the mantle that have burnt through the crust and build the cone over extended periods slowly by almost continual eruption – we see this at Hawaii, Reunion, Erta Ale, and other similar edifices around the globe, but these plumes are tiny compared to those associated with the known and confirmed super volcanoes. As an example, the magma chamber under Kilauea is suggested to have a volume of between 40-60 cubic km, however, the magma chamber under yellowstone is estimated to be around 48,000 cubic km – and it is not the largest – recent research in Italy implies that the Campi Flegrei supervolcano, whilst the calderas are smaller than Yellowstone, has a chamber that may have a volume up to 120,000 cubic km – it is this that also made researchers question how these behemoths erupt – when it last became effusive, it created the entire volcanic region around Naples in a few hundred years – this includes all the volcanoes, including Vesuvius, in the region, demonstrating that they may not, at least all, explode in one cataclysmic event, local conditions within the magma are clearly a defining factor in how the event happens, if they are high in dissolved gases they are likely more explosive, as we see with strato volcanoes – more gases, more explosive eruptions (Vesuvius), less gases, more magmatic and effusive eruptions (Etna).
The fact is we have a lot to learn about both shield and supervocanoes, we know both are assiated with plumes rising from the mantle, although at vastly differing scales, as we have little idea why this happens – there are theories, some are likely correct, but a fuller understanding is required. That Gakkel Caldera exists should not really be a surpise, and I will bet that when we start to properly map the deep ocean we will find more of these behemoths straddling oceanic plate boundaries – recent research identified another 18500+ volcanoes on the ocean floor that we simply did not know about – and they were only the ones that were obvious – it is likely there are many 1000s more and several supervolcanoes we have yet to identfiy.
From the map you show, it appears the caldera is the end of the line for the rift, that means it could be the hinge point for tectonic movement with compression occuring on the other side. The stresses involed much contribute to the reason the volcano is there in the furst place.
"Mark my words." And live for some couples of thousands of years. Then you will see the new East-African volcanoes I foretold.
What are governments doing about all that noxious Co2 these super volcanoes pump out eh? 🤔😂
One major item not mentioned is that super volcanos are stationary hot spots and long lasting with the surface plates movng over them. While this is the only current one with a speading ridge above it, there should be past examples.
Also what evidence is there that super volcanos form at speading ridges. I am happy with various associated volcanic actvity at or near the ridges, but need to be convinced about the super volcano link.