{"thcode":2,"term":{"code":1199,"name":"unconsolidated deposits","parent":1005,"scope":"Loosely bound sediments such as sand, gravel, and silt which tend to accumulate in low areas or valleys."},"uf":[{"name":"alluvium","usewith":false},{"name":"eolian sediments","usewith":false},{"name":"loess","usewith":false},{"name":"sediment geochemistry","usewith":{"code":153,"name":"chemical analysis","parent":619,"scope":"Chemical techniques used to identify the composition of substances."}},{"name":"sediments","usewith":false},{"name":"surficial deposits","usewith":false}],"bt":[{"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":[{"code":164,"name":"clay deposits","parent":1199,"scope":"Fine-grained sedimentary soil deposits, containing hydrated silicas of aluminum, that are plastic and sticky when wet and harden when heated."},{"code":500,"name":"gravel deposits","parent":1199,"scope":"Alluvial accumulations of small unconsolidated rock fragments, such as pebbles and cobbles, used in construction as fill, ground cover, or aggregate for concrete."},{"code":1998,"name":"mine waste","parent":1199,"scope":"Earth materials removed during mining and concentrated in piles or beds, typically near the site of extraction.  Tailings are mine waste that has been processed to remove valuable components; unprocessed mine waste includes overburden removed to reach commodity materials such as ore or coal."},{"code":1011,"name":"sand deposits","parent":1199,"scope":"Deposits of loose particles of rock or mineral (sediment) that range in size from 0.0625-2.0 millimeters in diameter."},{"code":2044,"name":"soil horizons","parent":1199,"scope":"Layers in soil defined by physical, chemical, biological, or mineralogical properties which vary with depth."},{"code":2271,"name":"solid industrial waste material","parent":1199,"scope":"Waste solid materials produced by industrial processing of earth materials, not simply material extracted in the search for ores."}],"rt":[]}