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Geology of the Grand Canyon: Chapter I. The Plateau Province.
CHAPTER II. GEOGRAPHY OF THE G...CHAPTER I. THE PLATEAU PROVINCE.The investigations made by this division of the Geological Survey during the last two years have been pursued with the object…river
(Encyclopedia) river, stream of water larger than a brook or creek. Land surfaces are never perfectly flat, and as a result the runoff after precipitation tends to flow downward by the shortest and…hogback
(Encyclopedia) hogback, sharp-crested ridge with steep slopes on both sides, formed by the erosion of steeply tilted rock layers. Hogbacks are commonly formed along the eroded flanks of large,…Sylt
(Encyclopedia) SyltSyltzĭlt, Ger. zült [key], island (1994 pop. 5,543), 36 sq mi (93 sq km), Schleswig-Holstein, N Germany, in the North Sea. It is the largest of the North Frisian Islands and is…lespedeza
(Encyclopedia) lespedezalespedezalĕsˌpədēˈzə [key] or bush clover, any plant of the genus Lespedeza, leguminous herbs or undershrubs of the family Leguminosae (pulse family); native to North America…disk plow
(Encyclopedia) disk plow or disk, farm implement employing a row or rows of concave circular steel disks that cut and pitch the soil in a way somewhat similar to a moldboard plow. It can be used in…Palisades
(Encyclopedia) Palisades, cliffs along the west bank of the Hudson River, NE N.J. and SE N.Y., extending from N of Jersey City, N.J., to the vicinity of Piermont, N.Y., with a general altitude of…cover crop
(Encyclopedia) cover crop, green temporary crop grown to prevent or reduce erosion and to improve the soil by building up its organic content. Green-manure crops, which are specifically grown for…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…Integrated Pest Management
(Encyclopedia) Integrated Pest Management (IPM), planned program that coordinates economically and environmentally acceptable methods of pest control with the judicious and minimal use of toxic…Trending
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