{"thcode":2,"term":{"code":2034,"name":"hydraulic fracturing","parent":775,"scope":"Injection of water and other fluids through a well into geologic formations in order to increase the permeability of the rock units and thus permit natural gas or oil to be produced from them."},"uf":[{"name":"fracking","usewith":false},{"name":"hydrofracking","usewith":false}],"bt":[{"code":775,"name":"natural resource extraction","parent":1174,"scope":"Removal of natural materials or properties (such as heat) for use."},{"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":[{"code":2282,"name":"fluid migration","parent":451,"scope":"Movement or migration of fluids, including petroleum and other chemicals through earth materials by natural or anthropogenic forces."}]}