Mineral Resources On-Line Spatial Data
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Geologic units containing leucogranite
A plutonic rock defined in the QAPF diagram as having Q between 20 and 60% and P/(A+P) between 10 and 65%
This category is also used for monzogranite and leucogranite.
- Jurassic granitic rocks (Jurassic)
- Granite to diorite, locally foliated and locally alkalic; includes Triassic(?) granitoids in the Trigo Mountains. This unit includes two dominant assemblages of igneous rocks. The Kitt Peak-Trigo Peaks superunit includes, from oldest to youngest: dark, foliated or gneissic diorite, medium-grained equigranular to porphyritic granodiorite, and small, irregular intrusions of light-colored, fine-grained granite. The Ko Vaya superunit, limited to south-central Arizona, includes texturally heterogeneous K-feldspar-rich granitic rocks. (150-180 Ma)