{"thcode":2,"term":{"code":824,"name":"oceanic lithosphere","parent":667,"scope":"The solid outer zone of the earth, covered by seawater, and comprised of the crust and the upper layer of the mantle."},"uf":[],"bt":[{"code":667,"name":"lithosphere","parent":219,"scope":"The solid outer zone of the earth comprising the crust and the upper layer of the mantle."},{"code":219,"name":"crust (earth)","parent":292,"scope":"The outermost layer of the earth which is relatively thin, of lower density than the core, and rocky."},{"code":292,"name":"earth structure","parent":287,"scope":"Major interior structural features of the planet earth."},{"code":287,"name":"earth characteristics","parent":1174,"scope":"The measurable, definable properties and features of the earth."},{"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":810,"name":"ocean characteristics","parent":287,"scope":"The attributes and process of seas and oceans."},{"code":1025,"name":"sea-floor characteristics","parent":810,"scope":"Geomorphic features and geographic, compositional, and textural variation in the materials composing the ocean floor. Includes both large-scale structures (such as seamounts and rises) and fine-scale variations in rocks and deposits on the sea floor."},{"code":1147,"name":"tectonophysics","parent":470,"scope":"Branch of geophysics concerned with the structural forces affecting the deformation, uplift, and movement of the earth's crust."}]}