Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Mapping science

center line of a section

Earth science; Mapping science

The line connecting opposite quarter-section corners, or opposite sixteenth section (quarter quarter section) corners.

cirque

Earth science; Mapping science

An armchair-like valley having a steep, nearly vertical wall at the back (head), a concave floor meeting the back in a sharp break of slope, and a lip, at the front end ...

Benioff zone

Earth science; Mapping science

A nearly flat region of seismic activity (hypocenters) dipping, at continental margins or in continents, into the crust at an angle of about 45 o and extending to depths of up to ...

classification of map projections

Earth science; Mapping science

The separation of map projections into sets according to criteria uniquely characterizing each set. Map projections are commonly classified either by the geometric quality ...

chart reference

Earth science; Mapping science

The indication, on a hydrographic chart, of the chart or plan of next larger scale for some particular region.

component

Earth science; Mapping science

(1) One of the parts into which a vector may be divided and whose vectorial sum is the vector. For example, the vector representing the intensity of the Earth's magnetic field ...