{"thcode":4,"term":{"code":"4.4.13","name":"Diorite","parent":"4.4","scope":"A plutonic rock defined in the QAPF diagram as having Q between 0 and 5% or F\/(F+A+P) < 10%, P\/(A+P) greater than 90% and plagioclase more sodic than An50"},"uf":[],"bt":[{"code":"4.4","name":"Granitoid","parent":"4","scope":"A general term for all phaneritic igneous rocks dominated by quartz and feldspars."},{"code":"4","name":"Plutonic rock","parent":"0","scope":"A rock formed at considerable depth by crystallization of magma and\/or by chemical alteration.  It is characteristically medium- to coarse-grained, of granitoid texture."},{"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":[{"code":"4.4.13.1","name":"Diabase","parent":"4.4.13","scope":"A plutonic rock whose main components are labradorite and pyroxene and which is characterized by ophitic texture."}],"rt":[]}