{"thcode":4,"term":{"code":"2.4","name":"Mixed volcanic\/clastic rock","parent":"2","scope":"An undivided mixture of volcanic rock and clastic sedimentary rock."},"uf":[],"bt":[{"code":"2","name":"Sedimentary rock","parent":"0","scope":"A rock resulting from the consolidation of loose sediment that has accumulated in layers..."},{"code":"0","name":"Earth material","parent":null,"scope":"Geologic map unit classification (Bruce R. Johnson) version 6.2: A hierarchical classification of earth materials for digital geologic maps."}],"nt":[],"rt":[]}