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www.usgs.gov. The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the ...
World map. A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map.
Mapped global geologic provinces. A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults, folds, are shown with strike and dip or trend and plunge symbols which give three-dimensional ...
Dr. William Halliday, a world-renowned speleologist, began donating his cave collection in 2003. In a review of USGS Library operations in 1937, William Heers, the Chief Librarian, noted the library had more than 200,000 books and reports, about 60,000 pamphlets, and about 60,000 maps, most of these obtained by gift and exchange.
The US has the 2nd largest Exclusive Economic Zone of 11,351,000 km 2 (4,383,000 sq mi). By total area (water as well as land), the United States is either slightly larger or smaller than the People's Republic of China, making it the world's third or fourth-largest country.
The National Map is a collaborative effort of the United States Geological Survey (USGS) and other federal, state, and local agencies to improve and deliver topographic information for the United States. [1] The purpose of the effort is to provide "...a seamless, continuously maintained set of public domain geographic base information that will ...
The 22 maps of the Geological Atlas of the World were co-published by CGMW and UNESCO from 1974 to 1984. In January 1983, the wall map concept of the Geological Map of the World was revived at the UNESCO G.A. [10] and the 1st edition at 1:25M scale was published in 1990. For the first time, continental geology was shown, alongside ocean geology ...
The logo of the United States Geological Survey (USGS) The Geographic Names Information System (GNIS) is a database of name and location information about more than two million physical and cultural features throughout the United States and its territories; the associated states of the Marshall Islands, Federated States of Micronesia, and Palau; and Antarctica.
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