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Amur

(Encyclopedia)Amur ämo͝orˈ [key], Chin. Heilongjiang, river, c.1,800 mi (2,900 km) long, formed by the confluence of the Shilka and Argun rivers, NE Asia, at the Russian-Chinese border; the Amur-Shilka-Onon syst...

Bangor, city, United States

(Encyclopedia)Bangor băngˈgôr, bănˈ–, băngˈgər [key], city (2020 pop. 31,753), seat of Pe...

Pechenga

(Encyclopedia)Pechenga pyĕˈchĭn-gə [key], Finnish Petsamo, town, NW European Russia, an ice-free port at the head of Pechenga Fjord on the Barents Sea and near the Norwegian border. It is also the northern term...

pothole

(Encyclopedia)pothole, in geology, cylindrical pit formed in the rocky channel of a turbulent stream. It is formed and enlarged by the abrading action of pebbles and cobbles that are carried by eddies, or circular ...

Petropavlovsk, city, Russia

(Encyclopedia)Petropavlovsk kəmchätˈskē [key], city (1989 pop. 269,000), capital of Kamchatka Territory, Russian Far East. It is a major port and naval base on the Northern Sea Route, and there are shipyards an...

Saint Lawrence, Gulf of

(Encyclopedia)Saint Lawrence, Gulf of, arm of the Atlantic Ocean, c.100,000 sq mi (259,000 sq km), SE Canada, extending c.250 mi (400 km) from the mouth of the Saint Lawrence River to Newfoundland on the east. At i...

Barents Sea

(Encyclopedia)Barents Sea, arm of the Arctic Ocean, N of Norway and European Russia, partially enclosed by Franz Josef Land on the north, Novaya Zemlya on the east, and Svalbard on the west. Its waters are warmed b...

Thousand Islands

(Encyclopedia)Thousand Islands, a group of more than 1,800 islands and 3,000 shoals in the St. Lawrence River, E of Lake Ontario, N N.Y. and S Ont., stretching c.50 mi (80 km) along the U.S.-Canada line. Most of th...

Neer, Aert van der

(Encyclopedia)Neer, Aert van der ärt vän dĕr nār [key], c.1603–77, Dutch landscape painter. Working mostly in Amsterdam, he excelled in painting unusual light effects, such as moonlight, sunsets, conflagratio...

boulder, in geology

(Encyclopedia)boulder, large rock fragment formed by detachment from its parent consolidated rock by weathering and erosion. In engineering and geology, especially in the United States, the term is applied to loose...