The Full Wiki

More info on List of supercontinents

List of supercontinents: Wikis

  

Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.

Encyclopedia

From Wikipedia, the free encyclopedia

This is a list of supercontinents. The list is written in reverse-chronological order (stratolithic order) comprising nearly all land at the time.

Present-day

  • Afro-Eurasia (~ 5 mya present-day supercontinent)
  • Americas (~ 15 mya present-day supercontinent)
  • Eurasia (~ 60 mya present-day supercontinent)

Historical

  • Gondwana (~600 — ~30 million years ago)
  • Laurasia (~ 300 — ~60 million years ago)
  • Pangaea (~300 — ~180 million years ago)
  • Euramerica (~300 million years ago)
  • Pannotia (~600 — ~540 million years ago)
  • Rodinia (~1.1 Ga— ~750 million years ago)
  • Columbia, also called Nuna (~1.8 — 1.5 Ga ago)
  • Nena (~1.8 Ga)
  • Kenorland (~2.7 Ga ago, Neoarchean sanukitoid cratons and new continental crust formed Kenorland. Protracted tectonic magna plume rifting occurred 2.48 to 2.45 Ga and this contributed to the Paleoproterozoic glacial events in 2.45 to 2.22 Ga. Final breakup occurred ~2.1 Ga.)
  • Ur (~3 Ga ago, Classified as the earliest known landmass. Ur, however, was probably the largest, perhaps even the only continent three billion years ago. While probably not a supercontinent, one can argue that Ur was a supercontinent for its time, even if it was smaller than Australia is today. Still, an older rock formation now located in Greenland dates back from Hadean times.)
  • Komatii Formation (3.475 Ga)
  • Vaalbara (~3.6 Ga ago. Evidence is the Yilgarn Craton, Western Australia and the worldwide Archean greenstone belts that were subsequently spread out across Gondwana and Laurasia)
  • Yilgarn (Zircon crystals from the Jack Hills of the Narryer Gneiss Terrane, Yilgarn craton, Western Australia and also 300 km. south point to a continental crust formation between 4.4-4.3 Ga. Evidence is the high Oxygen-18 values of 8.5 and micro-inclusions of SiO2 in these zircon crystals consistent with growth from a granitic source supracrustal material, low-temperature interactions and a liquid ocean.)

External links








Got something to say? Make a comment.
Your name
Your email address
Message