{"thcode":2,"term":{"code":83,"name":"bedforms","parent":1035,"scope":"Fluctuations from horizontal layers in sediments or sedimentary rocks made by flow on the beds of alluvial channels."},"uf":[{"name":"bed forms","usewith":false}],"bt":[{"code":1035,"name":"sedimentary rocks","parent":1005,"scope":"Rocks formed by the consolidation of loose, uncemented pieces of sediments."},{"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":[{"code":1037,"name":"sedimentology","parent":464,"scope":"Branch of earth sciences concerned with the study of the origin, composition, transport, and changes of materials deposited by water, wind, or ice."}]}