• bdonvrA
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    16 hours ago

    I mean it’s greatly exaggerated on Mercator but it’s definitely not tiny.

    It’s bigger than Australia

    • grue@lemmy.world
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      13 hours ago

      That outline is like the entire continental shelf, or all the area where the glaciers are directly over rock (as opposed to having ocean in between), or something like that.

      But if the ice weren’t there, not all of it would actually be above sea level:

      Might actually be smaller than Australia if the ice were gone, give or take things like sea level rise and isostatic rebound.

        • thebestaquaman@lemmy.world
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          3 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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          7 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.

          • bdonvrA
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            15 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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              15 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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              14 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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          14 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?

          • bdonvrA
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            13 hours ago

            I mean every landmass is surrounded on all sides by water though

            • dohpaz42@lemmy.world
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              13 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.~

    • skisnow@lemmy.ca
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      12 hours ago

      Nice. What did you use for that one?

      https://niy.ai/worldmap lets you reproject Mercator to put any landmass you want in the middle by clicking on it, but it doesn’t have that overlay thing.