Iceland is not a volcanic island formed from the atlantic and arctic rift, it is a continental island that is being torn apart by the rift zones, and will eventually be "engulfed" by the sea (more or less just merge into newly formed oceanic crust), which will (possible tomorrow, possibly millions of years from now) cause massive tsunamis and earthquakes.
Data: Continental crust beneath southeast Iceland (pnas.org, 2015)
http://www.pnas.org/content/112/15/E1818.full
So, iceland is a continental island, being torn apart. The earth's radius has been expanding since the archean earth, and all continents fit together on a smaller radius globe. The science which will supersede plate tectonics (as a proto-science) is one which, rather than trying to reconcile the data with a fixed radius, recognizes that it has been produced by an expanding radius earth.
The 21st century brings with it a number of scientific renaissances, one being the work of Dr. James Maxlow, who has spent 25 years producing content and models around expansion tectonics. Dr. Maxlow grew up in Australia, where it is natural to wonder about the Pacific ocean and how it relates to the earth's history.
damm that's interesting to know about this place
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wow thats serious. I heard that before.
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You might think about posting this type of post to steemiteducation. There is a tag and a profile with the same name. The profile has the rules which are not hard and you get really good payouts if they like you :)
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This would fit both steemiteducation and steemstem (though they require attribution for the images and sources).
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You are supposed to do the images anyway. Sources are good :)
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So informatif thanks for sharing
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If the Earth's radius is expanding, this means that the planet's density is decreasing, right? What would cause such a process? Is this supposed to be some side-effect of the planet slowly cooling and "curing"?
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No it means the radius is increasing.
Why it is increasing is another question. The expansion is an empirical observation.
An increase in mass is possible if you have an input of matter. If you feed a kid food that person grows and increases in mass. There is a continuous input of solar particles (electrons, protons and other ions) into the Earth, which would recombine into new matter.
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Oh, I totally forgot about the Sun as a possible source of matter hurling things our way ;) If the Earth is increasing significantly, it means the the Sun is losing really a lot of matter as most of its radiation is missing Earth entirely.
Once again, yet another post of yours is sending me down a rabbit hole ;) I'll read about this more, I wonder about the specific numbers about the process and I'll research that.
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