{"thcode":2,"term":{"code":829,"name":"oil resources","parent":799,"scope":"Deposits (pools) of highly valuable liquid hydrocarbons or fossil fuels."},"uf":[{"name":"petroleum resources (oil)","usewith":false}],"bt":[{"code":799,"name":"energy resources","parent":777,"scope":"Natural resources that are used for heat and power generation, including oil, natural gas, coal, and geothermal energy."},{"code":777,"name":"natural resources","parent":1174,"scope":"Stocks of anything naturally occurring that have a beneficial use for man including economic, nutritional, recreational, aesthetic, and other benefits."},{"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":[{"code":830,"name":"oil sand resources","parent":829,"scope":"Deposits of sandstone or unconsolidated sand containing bitumen that can be extracted as an oil resource."},{"code":831,"name":"oil shale resources","parent":829,"scope":"Deposits of finely grained sedimentary rock containing kerogen that can be distilled to produce liquid or gaseous hydrocarbons."}],"rt":[{"code":312,"name":"economic geology","parent":464,"scope":"Scientific study of the formation, location, and use of marketable geologic materials including fuels, metals, minerals, and water."},{"code":1804,"name":"petroleum","parent":1005,"scope":"Naturally occurring hydrocarbons, typically fluid or gas, often of economic use.  Includes oil, natural gas, and asphaltic compounds found in tar sands and oil shales."},{"code":2279,"name":"thermal maturation","parent":435,"scope":"Chemical alteration of organic material within sediments and sedimentary rocks as a result of heat. Measures of thermal maturation indicate the extent of transformation of detrital organic material into coal and petroleum."}]}