Pangea [pan jē′ə]〚coined (1912) by A. L. Wegener (1880-1930), Ger geologist: < Gr pan, all + gē, the earth〛the large landmass that nearly extended from pole to pole on one side of the earth during the late Paleozoic and early Mesozoic eras: it eventually split, forming Laurasia and Gondwana: often sp. Pangaea
* * *or PangaeaHypothetical protocontinent proposed by Alfred Wegener in 1912 as part of his theory of continental drift.Pangea (from Greek: pangaia, "all earth") supposedly covered about half the Earth and was completely surrounded by a world ocean called Panthalassa. Late in the Triassic Period (248–206 million years ago), Pangea began to break apart. Its segments, Laurasia (composed of all the present-day northern continents) and Gondwana (the present-day southern continents) gradually receded, resulting in the formation of the Atlantic Ocean.
* * *also spelled Pangaeain early geologic time, a “supercontinent” that incorporated almost all of Earth's landmasses and covered nearly one-third of Earth's surface. It was surrounded by a global ocean called Panthalassa. Pangea was fully assembled by the Early Permian (Permian Period) Period, some 270 million years ago. It began to break apart about 200 million years ago, during the Early Jurassic (Jurassic Period) Period, eventually forming the modern continents and the Atlantic and Indian Oceans. The existence of the Pangean supercontinent was first proposed in 1912 by the German meteorologist Alfred Wegener (Wegener, Alfred Lothar) as a part of his theory of continental drift. Pangea's name is derived from the Greek pangaia, meaning “all the Earth.”During the Early Permian, the northwestern coastline of the ancient continent Gondwana collided with and joined the southern Euramerican continent. With the fusion of the Angaran part of Siberia to this combined landmass during the middle of the Early Permian, the assembly of Pangea was complete. Cathaysia, a landmass comprising both North and South China, was not incorporated into Pangea. Rather, it formed a separate, much smaller, continent within the global ocean, Panthalassa.The breakup of Pangea is now explained in terms of plate tectonics rather than Wegener's outmoded concept of continental drift. Plate tectonics states that Earth's outer shell, or lithosphere (Earth), consists of large, rigid plates that move apart at oceanic ridges (ocean), come together at subduction zones (ocean), or slip past one another along fault lines (fault). The pattern of seafloor spreading (seafloor spreading hypothesis) indicates that Pangea did not break apart all at once but rather fragmented in distinct stages.The first oceans formed from the breakup, some 180 million years ago, were the central Atlantic Ocean between northwestern Africa and North America and the southwestern Indian Ocean between Africa and Antarctica. The South Atlantic Ocean opened about 140 million years ago as Africa separated from South America. About the same time, India separated from Antarctica and Australia, forming the central Indian Ocean. Finally, about 80 million years ago, North America separated from Europe, Australia began to rift away from Antarctica, and India broke away from Madagascar. India eventually collided with Eurasia approximately 50 million years ago, forming the Himalayan mountains (Himalayas).During Earth's long history, there probably have been several Pangea-like supercontinents. The oldest of these supercontinents is called Rodinia and was formed during Precambrian (Precambrian time) time some 1 billion years ago. Another Pangea-like supercontinent, Pannotia, was assembled 600 million years ago, at the end of the Precambrian. Present-day plate motions are bringing the continents together once again. Africa has begun to collide with southern Europe, and the Australian plate is now colliding with Southeast Asia. Within the next 50 million years, Africa and Australia will merge with Eurasia to form a supercontinent that approaches Pangean proportions. This episodic assembly of the world's landmasses has been called the supercontinent cycle or Wegenerian cycle, in honour of Alfred Wegener.
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Pangea — Saltar a navegación, búsqueda Para otros usos de este término, véase Pangea (desambiguación). Las líneas marcadas sobre Pangea señalan las masas de tierra que se separarían para formar los continentes actuales. Pangea (Pangaea) era el… … Wikipedia Español
pangea — PANGEÁ, pangele, s.f. (bot.; reg.) Numele a două legume din familia chenopodiaceelor: a) sfeclă (Beta vulgaris); b) sfeclă roşie (Beta rubra). – Din tc. pancar. Trimis de valeriu, 13.09.2007. Sursa: DEX 98 PANGEÁ s. v. sfeclă. Trimis de siveco … Dicționar Român
Pangea — (Рим,Италия) Категория отеля: Адрес: Via Nostra Signora Di Lourdes 35, Аурелио, 00167 Рим, И … Каталог отелей
pangea — pangèa ž DEFINICIJA geol. hipotetično cjelovito kopno iz paleozoika (pred o. 300 200 milijuna godina); razlomljeno u nekoliko dijelova osnova je današnjih kontinenata ETIMOLOGIJA konstr. Pangaea; ime dao njemački meteorolog A. L. Wegener (1880… … Hrvatski jezični portal
Pangea — [pan jē′ə] [coined (1912) by A. L. Wegener (1880 1930), Ger geologist: < Gr pan, all + gē, the earth] the large landmass that nearly extended from pole to pole on one side of the earth during the late Paleozoic and early Mesozoic eras: it… … English World dictionary
Pangea — ► sustantivo masculino GEOLOGÍA Nombre que se dio a la hipotética masa siálica continental que habría estado rodeada por el pantalasa u océano primitivo. * * * Pangea: (del griego, «todas las tierras») nombre dado por Alfred Wegener al… … Enciclopedia Universal
Pangea — Dieser Artikel beschreibt den ehemaligen Superkontinent Pangaea. Eine Beschreibung der gleichnamigen Expeditionsyacht von Mike Horn findet sich unter Pangaea (Yacht); eine Beschreibung des gleichnamigen Albums von Miles Davis findet sich unter… … Deutsch Wikipedia
pangea — Supercontinente terrestre que se formó hace 200 millones de años. Se conformo por la unión de varios continentes … Diccionario ecologico
Pangea — noun (plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland • Syn: ↑Pangaea • Topics: ↑tectonics, ↑plate tectonics, ↑plate tectonic theory … Useful english dictionary
Pangea Day — was an international multimedia event conducted on May 10, 2008. Cairo, Kigali, London, Los Angeles, Mumbai and Rio de Janeiro were linked to produce a 4 hour program of films, music and speakers. The program was broadcast live across the globe… … Wikipedia