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Gondwana |
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Gondwanaor GondwanalandHypothetical former supercontinent in the Southern Hemisphere, which included modern South America, Africa, southern Europe, India, Australia, and much of the Middle East and Antarctica. The concept that the continents were at one time joined was first set forth in detail by Alfred Wegener in 1912. He envisioned a single great landmass, Pangea, which supposedly began to separate early in the Jurassic Period (approximately 200 million to 146 million years ago). Subsequent workers distinguished between a southern landmass, Gondwana, and Laurasia to the north. See also continental drift. Gondwana [gänd′wä·nə] (geology) The ancient continent that is supposed to have fragmented and drifted apart during the Triassic to form eventually the present continents. Also known as Gondwanaland. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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2002a, Attempted subduction of the Gondwanan continental margin beneath Laurentia: new images from reprocessed Lithoprobe seismic reflection data across the Newfoundland Appalachians, in Abstract with Programs, Geological Society of America, Annual Meeting, p. |
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