Random Earth's Known SuperContinents (9 items)

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  (#8) Laurasia & Gondwanaland

  Formed 200 Million Years Ago

  These two guys aren't really a single supercontinent, they are the result of Pangea breaking in half and creating two enormous continents, Gondwannaland and Laurasia.

  Gondwanaland contained most of the landmasses in today's Southern Hemisphere, including Antarctica, South America, Africa, Madagascar and Australia, as well as the Arabian Peninsula and the Indian subcontinent, which have now moved entirely into the Northern Hemisphere.

  Laurasia, to the north, contained North America, Europe, and Asia (but not India). Laurasia is thought to have fragmented into the present continents of North America, Europe, and Asia some 66 million to 30 million years ago.

  The fracturing of both these supercontinents give us the picture of the globe we have today.
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  (#2) Ur

  Formed: 3 Billion Years Ago

  Ur is the first definitively known continent, despite being smaller at the time than Australia is now. Because it was the only one at the time, and because Vaalbara is still a theory, Ur is considered to be the first "super"continent. Ur would eventually join up with the continents Nena and Atlantica about one billion years later to form the supercontinent Rodinia. Ur actually survived for quite a while, making it through the breakup of Rondina and into the era of Pangaea, until it broke apart about 208 million years ago into Laurasia and Gondwanaland.

  You can now find the remains of Ur in parts of Africa, Australia, India, and Madagascar.
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  (#5) Rodinia

  Formed 1 Billion Years Ago

  Rodinia (along with it's more famous brother, Pangea) is one of the two true "super" continents. Gaining this title simply because it was massive, and contained many of the land masses we know today - but all mashed together into one. Unlike Pangea, not as much is known about Rodinia... its look and feel have been pieced together by comparing similar geologic features, now widely dispersed.

  Interestingly, the extreme cooling of the global climate around 700 million years ago (the aforementioned "Snowball Earth" theory) and the rapid evolution of primitive life during the subsequent periods are often thought to have been triggered by the breaking up of Rodinia.
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  (#7) Pangea

  Formed 300 Million Years Ago

  This is the one that everyone has heard of, and because it's the only one we were taught about in school, is thought of as Earth's only supercontinent. During the Early Permian, the northwestern coastline of Gondwana smashed into the Euramerican continent. With the fusion of the Angaran part of Siberia to this combined landmass, the assembly of Pangea was pretty much done becoming 'super'.

  It began to break apart about 200 million years ago, during the Early Jurassic, eventually forming the modern continents and the Atlantic and Indian Oceans.
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  (#9) Pangea Ultima

  Future: 250+ Million Years From Now

  Knowing what we know about how plate tectonics work, we can actually theorize what the continents will be doing down the road. After all, as you read this, the continents are still moving. It's a fantasy, of course, we still know only a fraction of what we need to understand about how our planet's plates move and dance and fight with each other.

  In the Pangea Ultima scenario, subduction destroys the Atlantic oceanic basin, causing the Atlantic Ocean to close, bringing the Americas back together with Africa and Europe. As with most supercontinents, the interior of this massive new continent would probably become a semi-arid desert prone to temperature extremes.
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  (#6) Pannotia

  Formed 600 Million Years Ago

  Also known as the Vendian supercontinent, Pannotia lasted up to the end of the Precambrian period, about 550 Million years ago. It would eventually split into pieces - Laurentia, Siberia and Baltica with the main landmass of Gondwana to the south.

  This is when you can really start to see the shapes of today's continents starting to become recognizable.

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