{"thcode":4,"term":{"code":"3.3.1","name":"Bimodal suite","parent":"3.3","scope":"A mixed sequence of sub-equal amounts of felsic and mafic volcanic rocks, commonly rhyolite and basalt with little or no intermediate composition rock."},"uf":[],"bt":[{"code":"3.3","name":"Lava flow","parent":"3","scope":"A solidified body of rock that is formed by the lateral, surficial outpouring of molten lava from a vent or a fissure."},{"code":"3","name":"Volcanic rock","parent":"0","scope":"A generally finely crystalline or glassy igneous rock resulting from volcanic action at or near the Earth's surface, either ejected explosively or extruded as a lava.  The term includes near-surface intrusions that form a part of the volcanic structure."},{"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":[]}