{"thcode":2,"term":{"code":2276,"name":"acid neutralizing potential","parent":1367,"scope":"Geochemical capacity of earth materials to affect the pH of waters flowing through them."},"uf":[{"name":"acid neutralizing capacity","usewith":false},{"name":"neutralization potential","usewith":false}],"bt":[{"code":1367,"name":"earth material properties","parent":287,"scope":"Physical characteristics of rocks and unconsolidated earth materials such as soils and sediments."},{"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":2275,"name":"acid-base accounting","parent":189,"scope":"An analytical procedure that provides values to help assess the acid-producing and acid-neutralizing potential of overburden rocks prior to coal mining and other large-scale excavations."},{"code":1724,"name":"mine drainage","parent":1723,"scope":"Introduction of harmful substances into the environment from mines and tailings."}]}