{"thcode":2,"term":{"code":1341,"name":"plutonic rocks","parent":572,"scope":"Rocks formed at considerable depth by crystallization of magma and\/or by chemical alteration. They are characteristically medium- to coarse-grained, of granitoid texture."},"uf":[{"name":"intrusive rocks","usewith":false},{"name":"magma","usewith":false}],"bt":[{"code":572,"name":"igneous rocks","parent":1005,"scope":"Rocks formed from melted rock that has cooled and solidified."},{"code":1005,"name":"rocks and deposits","parent":287,"scope":"Solid masses that make up the earth's crust as well as accumulations of materials. Use for major rock types and unconsolidated deposits. For deposits of economic value, see related terms."},{"code":287,"name":"earth characteristics","parent":1174,"scope":"The measurable, definable properties and features of the earth."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[]}