{"thcode":61,"term":{"code":511,"name":"relative dating (geologic)","parent":501,"scope":"includes all methods for determining the relative order of geologic events"},"uf":[],"bt":[{"code":501,"name":"geologic dating","parent":486,"scope":"used for all methods of dating geologic (or archaeologic) materials, including both absolute dating methods (yielding numerical ages) relative dating methods (for determining the relative order of geologic events)."},{"code":486,"name":"laboratory methods","parent":398,"scope":"used for all laboratory procedures in support of scientific investigations."},{"code":398,"name":"research method","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[{"code":512,"name":"biostratigraphic correlation","parent":511,"scope":"the use of fossil assemblages to establish the relative ages of sedimentary strata in different locations (i.e., where direct superposition cannot be observed); not to be confused with lithostratigraphic correlation (the matching of sedimentary strata based solely on rock type)."}],"rt":[]}