• thebestaquaman@lemmy.world
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      4 hours ago

      I may be mistaken here, but I think the concept of a “continental shelf” is pretty well defined geologically. That is: Outside a land mass, the ocean floor extends a certain distance before dropping off to the deep ocean floor. An island would be a piece of land that sticks out of the sea from this continental shelf, while the “continent” includes the entire shelf, and all the land masses that stick out of the ocean on that shelf.

      Of course, this seems to break down a bit for e.g. the Europe/Asia divide (and probably a lot more), but the concept of “continents” vs. “islands” can make sense geologically, although the “continents” are then different from the geopolitical borders ones we usually talk about.

    • pHr34kY@lemmy.world
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      8 hours ago

      By definition, a continent and an island are mutually exclusive. Nothing can be both.

      Australia isn’t a continent either. It’s in the continent of Oceania, which includes New Zealand.

      Antarctica is a continent in its own right. It’s not a country and not a nation.

      • bdonvr@thelemmy.club
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        16 hours ago

        I think I remember being told Greenland was the largest island, while Australia was a continent

        Something to do with tectonic plates

        • lugal@lemmy.dbzer0.com
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          16 hours ago

          Continents is a human made construct that’s later rationalized with tectonic plates and other criteria. Basically, people around the Mediterranean Sea divided the Mediterranean Coast into 3 parts and later extended this concept.

        • nightlily@leminal.space
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          15 hours ago

          If you go by the geological definition, Australia is a continent, as is Zealandia. That’s right, New Zealand has equal geological footing with the entirety of Eurasia.

    • dohpaz42@lemmy.world
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      15 hours ago

      Not all continents, no. Islands are bodies of land surrounded by water on all sides, no? Wouldn’t Antarctica and Australia then qualify by that definition?

        • dohpaz42@lemmy.world
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          14 hours ago

          But most of the land that are considered continents are connected to one or kore other land, and thus couldn’t be defined as an island.

          Though, after reading a few other comments, it seems the definition of what makes a continent a continent is apparently subject to debate.

          ~This is why we can’t have nice things.~