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geomorphology

(Encyclopedia)geomorphology, study of the origin and evolution of the earth's landforms, both on the continents and within the ocean basins. It is concerned with the internal geologic processes of the earth's crust...

Frankenthaler, Helen

(Encyclopedia)Frankenthaler, Helen frăngkˈənthŏlər [key], 1928–2011, American painter, b. New York City. The youngest of the women who formed part of abstract expressionism's second generation, Frankenthaler...

Comstock Lode

(Encyclopedia)Comstock Lode, richest known U.S. silver deposit, W Nevada, on Mt. Davidson in the Virginia Range. It is said to have been discovered in 1857 by Ethan Allen Grosh and Hosea Ballou Grosh, sons of a Pen...

Fisher, John Arbuthnot Fisher, 1st Baron

(Encyclopedia)Fisher, John Arbuthnot Fisher, 1st Baron ärbŭthˈnət [key], 1841–1920, British admiral. Entering the navy in 1854, he specialized in gunnery and in 1872 was responsible for instituting the develo...

Powell, John Wesley

(Encyclopedia)Powell, John Wesley, 1834–1902, American geologist and ethnologist, b. Mt. Morris (now part of New York City). The family moved to Illinois, where Powell joined the Natural History Society, making c...

Constitutional Convention

(Encyclopedia)Constitutional Convention, in U.S. history, the 1787 meeting in which the Constitution of the United States was drawn up. The convention at Philadelphia drew up one of the most influential document...

Burgoyne, John

(Encyclopedia)Burgoyne, John bərgoinˈ [key], 1722–92, British general and playwright. In the Seven Years War, his victory over the Spanish in storming (1762) Valencia de Alcántara in Portugal made him the toas...

Mallarmé, Stéphane

(Encyclopedia)Mallarmé, Stéphane stāfänˈ mälärmāˈ [key], 1842–98, French poet. Mallarmé's great importance is as the chief forebear of the symbolists; the influence of his poetry was particularly felt b...

folk dance

(Encyclopedia)folk dance, primitive, tribal, or ethnic form of the dance, sometimes the survival of some ancient ceremony or festival. The term is used also to include characteristic national dances, country dances...

Duer, William

(Encyclopedia)Duer, William do͞oˈər, dyo͞oˈ– [key], 1747–99, political leader in the American Revolution and financier, b. Devonshire, England. He served for a time as aide-de-camp to Robert Clive in India...