{"thcode":2,"term":{"code":1389,"name":"alkaline earth elements","parent":1426,"scope":null},"uf":[],"bt":[{"code":1426,"name":"chemical element groups","parent":1382,"scope":"Groups shown at <http:\/\/periodic.lanl.gov\/>"},{"code":1382,"name":"elements","parent":1174,"scope":"Chemical elements and element groups"},{"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":1403,"name":"barium","parent":1427,"scope":"Alkaline earth element with symbol Ba and atomic number 56 <http:\/\/periodic.lanl.gov\/56.shtml>"},{"code":1406,"name":"beryllium","parent":1427,"scope":"Alkaline earth element with symbol Be and atomic number 4 <http:\/\/periodic.lanl.gov\/4.shtml>"},{"code":1418,"name":"calcium","parent":1427,"scope":"Alkaline earth element with symbol Ca and atomic number 20 <http:\/\/periodic.lanl.gov\/20.shtml>"},{"code":1498,"name":"magnesium","parent":1427,"scope":"Alkaline earth element with symbol Mg and atomic number 12 <http:\/\/periodic.lanl.gov\/12.shtml>"},{"code":1551,"name":"radium","parent":1427,"scope":"Alkaline earth element with symbol Ra and atomic number 88 <http:\/\/periodic.lanl.gov\/88.shtml>"},{"code":1581,"name":"strontium","parent":1427,"scope":"Alkaline earth element with symbol Sr and atomic number 38 <http:\/\/periodic.lanl.gov\/38.shtml>"}]}