Marilyn's Photos - Nov 5 2025 - Supercontinents Below
It says there are supercontinents - large low-seismic-velocity provinces (LLSVPs) and they are “lurking” below the surface of the Earth. Way below - 1,200 miles below. They are hidden islands inside Earth and reach heights of 620 miles. Can you imagine peaks like that on the surface? No, because they would collapse under gravity. But continuing on the idea, the base would have to be a significant portion of a continent and would be visible from any point on Earth’s surface. I asked this question of AI and got a pleasant answer. By that I mean it gave a sense of appearance and scale, environmental conditions, and geological implications. But, alas. Can I trust AI to tell me fact? I did enjoy the fantasy sense of it all.
These two “mountains” are below the Earth and are located beneath Africa and the Pacific Ocean. How to study them? Seismologists look at oscillations caused by massive earthquakes. These LLSVPs are instrumental in shaping the Earth’s surface processes. I still can’t grasp that the inside of the Earth is a molten core. And to find out there are supercontinents down in the mantle.
The Earth’s mantle has 1,800 miles of mostly solid rock. It was thought to be a consistency of thickened caramel that is uniformly blended. Now scientists find out there are unmixed regions and it isn’t uniform down there. Won’t they have to redo all those cross-section drawings? The article refers to “sunken worlds.” Isn’t that so mysterious! Sometimes it is hard to know the purpose of scientific research. This seems to me to be about understanding the surface plate tectonics, those things that give us the grief of earthquakes.
In all, this is definitely the stuff of imaginative science fiction ideas. Full scientific description and detailsHERE.
This is another version of the Echinacea watercolour yesterday. Today’s version has the Echinaceas in a vase.
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