- a coarse-grained acid igneous rock containing almost twice as much plagioclase as orthoclase: intermediate in composition between granite and diorite
C19: from grano + diorite
Examples from the Web for granodiorite
From other areas the same materials are present plus sandstone, granite, and granodiorite.The Topanga Culture Final Report on Excavations, 1948
A. E. Treganza
- A coarse-grained igneous rock consisting primarily of quartz, plagioclase, and potassium feldspar, and also containing biotite, hornblende, or pyroxene. It is the coarse-grained equivalent of dacite.