{"thcode":2,"term":{"code":172,"name":"coal resources","parent":799,"scope":"Fuel resources such as anthracite, lignite, bituminous coal, or coke, consisting largely of carbonaceous material and formed from fossilized plants."},"uf":[{"name":"anthracite resources","usewith":false},{"name":"bituminous coal resources","usewith":false},{"name":"lignite resources","usewith":false},{"name":"subbituminous coal resources","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":[],"rt":[{"code":173,"name":"coalbed methane resources","parent":770,"scope":"Resources of methane-rich gas generated and stored in coalbeds."},{"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":2043,"name":"mineral deposits","parent":1005,"scope":"Deposits in which particular minerals are concentrated, typically noticed and studied if the minerals have economic value."},{"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."}]}