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Teton , rivers, United States

(Encyclopedia)Teton tētŏnˈ [key]. 1 River, 143 mi (230 km) long, rising in several branches in the Rocky Mts., NW Mont., and flowing E to the Marias River. Bynum Reservoir, on a tributary, is a unit in the irrig...

Yankton, city, United States

(Encyclopedia)Yankton, city (1990 pop. 12,703), seat of Yankton co., extreme SE S.Dak., on the Missouri River; inc. 1869. A railroad and trade center in an agricultural region, it has grain elevators, creameries, a...

Riobamba

(Encyclopedia)Riobamba rēōbämˈbä [key], city (1990 est. pop. 95,505), capital of Chimborazo prov., central Ecuador, near Chimborazo volcano, in a high basin of the Andes. Riobamba is the headquarters of the ra...

Amazon, river, Peru and Brazil

(Encyclopedia)Amazon, Port. Amazonas ämäzōˈnəs [key], world's second longest river, c.3,900 mi (6,280 km) long, formed by the junction in N Peru's Andes Mts. of two major headstreams, the Ucayali and the short...

Carboniferous period

(Encyclopedia)Carboniferous period kärbənĭfˈərəs [key], fifth period of the Paleozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 350 to 290 million years ago. The pl...

Altai

(Encyclopedia)Altai or Altay both: ăltīˈ, äl–, ălˈtī, Rus. əltīˈ [key], geologically complex mountain system of central Asia; largely in the Altai Republic, Russia, and in Kazakhstan, but extending into...

Jinsha

(Encyclopedia)Jinsha shäˈsēˈ [key], city (1994 est. pop. 683,000), S Hubei prov., China, on the Chang River. It is an important trade center for the N Dongting Lake basin and the site of a massive reservoir bui...

Atyrau

(Encyclopedia)Atyrau go͞orˈyĭf [key], city, W Kazakhstan, on the Ural River and near the Caspian Sea. A port, rail center, and an industrial base of the Emba basin oil fields, it has...

Pechora

(Encyclopedia)Pechora pyĭchôˈrə [key], river, c.1,120 mi (1,800 km) long, rising in the N Urals, N European Russia. It flows generally north through the forest and tundra regions of the Komi Republic and the Ne...

Wissmann, Hermann von

(Encyclopedia)Wissmann, Hermann von hĕrˈmän fən vĭsˈmän [key], 1853–1905, German explorer in Africa. He crossed (1880–82) Africa from Luanda to Zanzibar and, on behalf of Leopold II of Belgium, explored ...