See Also: granodiorite(dictionary)
granodiorite(encyclopedia)

granodiorite (iou)



granodiorite noun. L19.
[from GRANITE + -O- + DIORITE.]
Geology. Any of a class of coarse-grained quartz-containing plutonic rocks intermediate between granite and diorite in composition, with plagioclase forming at least two-thirds of the total feldspar content.