{"thcode":3,"term":{"code":955,"name":"rift zones","parent":375,"scope":"Divergent tectonic plate boundaries."},"uf":[{"name":"mid-ocean ridges","usewith":false}],"bt":[{"code":375,"name":"faults","parent":1135,"scope":"Fractures in the Earth's crust accompanied by a displacement of one side of the fracture with respect to the other. [UGSG Circ 1048]"},{"code":1135,"name":"tectonic features","parent":816,"scope":"Features resulting from structural deformation of the earth's crust through tectonic processes. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[]}