(oldest part of continents)

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• Oldest dated rocks — The oldest dated rocks on Earth, as an aggregate of minerals that have not been subsequently melted or disaggregated by erosion, are from the Archean Eon. Such rocks are exposed on the surface in very few places.[1] There is some controversy… …   Wikipedia

• Oldest rock — The oldest rock or rocks on Earth, as an aggregate of minerals that have not undergone subsequent metamorphosis, are from the Archean Eon. Such rocks are only exposed on the surface in very few places. [Some meteorites, such as the ALH84001 Mars… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

• Michigan State University — Motto …   Wikipedia

• pre-Columbian civilizations — Introduction       the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …   Universalium

• Istanbul —   City   Top: Topkapı Palace – Hagia Sophia – Blue Mosque Center: Beyoğlu; …   Wikipedia

• Kolkata — Calcutta redirects here. For other uses, see Calcutta (disambiguation). Kolkata (কলকাতা) City of Joy, Cultural Capital of India, Literary Capital of India, City of Furious Creative Energy, City of Palaces, City of All Cities, City of Bridges in… …   Wikipedia

• Riyadh — Infobox City official name = City of Riyadh nickname = Riyadh motto = image caption = A part of King Fahd Road flag link = Flag of Saudi Arabia flag size = 80px image shield = Coat of arms of Saudi Arabia.svg shield link = Coat of arms of Saudi… …   Wikipedia

• New Castle of Ansembourg — The New Castle of Ansembourg The New Castle of Ansembourg (French: Grand Château d Ansembourg), in central Luxembourg is one of the castles belonging to the Valley of the Seven Castles. Located about one kilometre or just over half a mile below… …   Wikipedia

• Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …   Universalium