{"thcode":3,"term":{"code":645,"name":"map quadrangle regions","parent":646,"scope":"Regions on rectangular maps bounded by parallels of latitude and meridians of longitude, generally published in a series with prescribed scale. [Adapted from Glossary of Geology, 4th ed.]"},"uf":[{"name":"quadrangle regions","usewith":false},{"name":"topographic quadrangle regions","usewith":false}],"bt":[{"code":646,"name":"map regions","parent":928,"scope":null},{"code":928,"name":"regions","parent":1,"scope":"(a) Large, indefinite portions of the earth's surface. (b) Specified districts or territories. (c) Areas of interest or activity; spheres. (d) Ecology. Parts of the earth characterized by distinctive animal or plant life. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[]}