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Paektu, Mount

(Encyclopedia)Paektu or Baekdu, Mount, volcanic peak, 9,003 ft (2,744 m) high, in the Changbai Mts. on the border between North Korea and China. The highest mountain in Korea, it rises from a basalt lava plateau th...

paleomagnetism

(Encyclopedia)paleomagnetism, study of the intensity and orientation of the earth's magnetic field as preserved in the magnetic orientation of certain minerals found in rocks formed throughout geologic time. Paleom...

Yellowstone National Park

(Encyclopedia)Yellowstone National Park, 2,219,791 acres (899,015 hectares), the world's first national park (est. 1872), NW Wyo., extending into Montana and Idaho. It lies mainly on a broad plateau in the Rocky Mt...

Fuego

(Encyclopedia)Fuego fwēˈgō [key] [Span.,=volcano of fire], active volcano, 12,346 ft (3,763 m) high, S central Guatemala, near the colonial city of Antigua Guatemala. One of Central America's most active volcan...

Mojave Trails National Monument

(Encyclopedia)Mojave Trails National Monument, 1.6 million acres (647,000 hectares), SE California. Linking Joshua Tree National Park and Mojave National Preserve, it follows the trails of the Chemehuevi people, a ...

Surtsey

(Encyclopedia)Surtsey, volcanic island, c.1.25 sq mi (3.2 sq km), S of Iceland in Vestmannaeyjar (Westman Islands). The island was formed by the eruption (Nov., 1963) of Sutur, an underwater volcano named for a gia...

cave

(Encyclopedia)cave, a cavity in the earth's surface usually large enough for a person to enter. Caves may be formed by the chemical and mechanical action of a stream upon soluble or soft rock, of rainwater seeping ...

Petrobras scandal

(Encyclopedia)Petrobras scandal, Brazilian corruption scandal involving executives at the government-controlled oil company, Petróleo Brasileiro S.A. (Petrobras), prominent politicians, and construction firms work...

Columbia Plateau

(Encyclopedia)Columbia Plateau, physiographic region of North America, c.100,000 sq mi (259,000 sq km), NW United States, between the Rocky Mts. and the Cascade Range in Washington, Oregon, and Idaho. Most of the p...

Nyiragongo

(Encyclopedia)Nyiragongo nyēˌrägôngˈgō [key], active volcano (c.11,400 ft/3,475 m), S Virunga range, in E Congo near the Rwanda border, NE of Lake Kivu and 12 mi (19 km) N of Goma, in S Virunga National Park....

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