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Kaveri

(Encyclopedia)Kaveri or Cauvery both: kôˈvərē [key], river, c.475 mi (760 km) long, rising in the Western Ghats, Karnataka state, and flowing SE across a plateau, through Tamil Nadu state, to the Bay of Bengal,...

pitchblende

(Encyclopedia)pitchblende pĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide (UO2), it usually cont...

cerrado

(Encyclopedia)cerrado, tropical ecological region, c. 770,000 sq mi (2 million sq km), Brazil, encompassing several states and the federal district and extending into Bolivia and Paraguay. Located in the central pl...

Zagros

(Encyclopedia)Zagros zăgˈrŏs [key], mountain system of W Iran, extending c.1,100 mi (1,770 km) from the Turkish-Armenian frontier SE to the Strait of Hormuz, forming the western and southern border of the centra...

Salt River valley

(Encyclopedia)Salt River valley, irrigated region around the lower course of the Salt River, which rises in mountain streams near the Mogollon Rim of the Mogollon Plateau and flows southwest to join the Gila River ...

Spokan

(Encyclopedia)Spokan or Spokane both: spōkănˈ [key], Native North Americans whose language belongs to the Salishan branch of the Algonquian-Wakashan linguistic stock (see Native American languages). In the early...

Stavropol Territory

(Encyclopedia)Stavropol Territory, administrative division (1995 pop. 2,650,000), 31,120 sq mi (80,601 sq km), S European Russia, in the North Caucasus, the northern foothills of the main Caucasian range, and the d...

lava

(Encyclopedia)lava läˈvə [key], molten rock that erupts on the earth's surface, either on land or under the ocean, by a volcano or through a fissure. It solidifies into igneous rock that is also called lava. Bef...

Sierra Madre, mountain system, Mexico

(Encyclopedia)Sierra Madre dĕl so͝orˈ [key] is a tumbled, broken mass of uptilted mountains that touch the Pacific coast but form into no clearly defined range. It spreads over S Mexico between the volcanic belt...

Dasht-e Kavir

(Encyclopedia)Dasht-e Kavir däsht-ēkävērˈ [key], great salt desert, c.500 mi (800 km) long and c.200 mi (320 km) wide, SE of the Elburz Mts., N central Iran. It is a huge basin of interior drainage named after...