{"thcode":3,"term":{"code":599,"name":"land regions","parent":928,"scope":"Use for land areas distinguished from ocean areas as well as general land-based regions without a more specific type designation."},"uf":[{"name":"lake districts","usewith":false},{"name":"lake regions","usewith":false}],"bt":[{"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":[{"code":253,"name":"continents","parent":599,"scope":"Earth's major land masses, including both dry land and continental shelves. [Glossary of Geology, 4th ed.]"},{"code":575,"name":"islands","parent":599,"scope":"Tracts of land smaller than a continent, surrounded by the water of an ocean, sea, lake or stream. [Glossary of Geology, 4th ed.]"},{"code":1104,"name":"subcontinents","parent":599,"scope":"(a) Divisions or parts of a continent having characteristics that distinguish them from the rest of the continent. These subdivision are typically based on geologic or geomorphic characteristics. (b) Large land masses smaller than any of the seven recognized continents. [Adapted from Glossary of Geology, 4th ed.]"}],"rt":[]}