{"thcode":61,"term":{"code":517,"name":"thin section analysis","parent":516,"scope":"traditional method of examining very thin, transparent samples of rock (typically 30 microns thick) under a polarizing optical microscope to determine mineralogy and texture."},"uf":[],"bt":[{"code":516,"name":"optical microscopy","parent":515,"scope":"used for observations with an optical microscope."},{"code":515,"name":"microscopy","parent":486,"scope":"used for all observations requiring a magnification."},{"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":[],"rt":[]}