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Jurassic granitic rocks

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)
StateArizona
NameJurassic granitic rocks
Geologic ageJurassic
Original map labelJg
Primary rock typegranodiorite
Secondary rock typegranite
Other rock typesdiorite; pegmatite; leucogranite; aplite; granodiorite; porphyry; quartz monzonite; syenite; hornblendite
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granodiorite (Batholith)
Igneous > Plutonic > Granitic > Granite (Batholith)
Minor
Igneous > Plutonic > Granitic > Granodiorite (Pluton)
Igneous > Plutonic > Granitic > Granite (Pluton)
Igneous > Plutonic > Dioritic > Quartz-diorite (Pluton)
Igneous > Plutonic > Dioritic > Quartz-diorite (Batholith)
Incidental
Metamorphic > Gneiss (Amphibolite)
Metamorphic (Greenschist)metagranodiorite, metagranite
Igneous > Plutonic > Ultramafic > Hornblendite (Dike or sill)
Igneous > Plutonic > Syenitic > Syenite (Dike or sill)
Igneous > Plutonic > Syenitic > Quartz-syenite (Dike or sill)
Igneous > Plutonic > Syenitic > Quartz-monzonite (Dike or sill)
Igneous > Plutonic > Syenitic > Quartz-alkali-feldspar-syenite (Dike or sill)
Igneous > Plutonic > Syenitic > Monzonite (Dike or sill)
Igneous > Plutonic > Syenitic > Alkali-feldspar-syenite (Dike or sill)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite (Dike or sill)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Aplite (Dike or sill)
Igneous > Plutonic > Granitic > Granodiorite (Dike or sill)
Igneous > Plutonic > Granitic > Granite > Syenogranite (Dike or sill)
Igneous > Plutonic > Granitic > Granite > Monzogranite (Dike or sill)
Igneous > Plutonic > Granitic > Granite (Dike or sill)
Igneous > Plutonic > Granitic > Alkali-feldspar-granite > Alkali-granite (Dike or sill)
Igneous > Plutonic > Granitic > Alkali-feldspar-granite (Dike or sill)
Igneous > Plutonic > Gabbroic > Quartz-monzogabbro (Dike or sill)
Igneous > Plutonic > Gabbroic > Quartz-gabbro (Dike or sill)
Igneous > Plutonic > Gabbroic > Monzogabbro (Dike or sill)
Igneous > Plutonic > Gabbroic > Gabbro (Dike or sill)
Igneous > Plutonic > Dioritic > Quartz-diorite (Dike or sill)including appinite and related rocks; including dioritic pegmatite
Igneous > Plutonic > Dioritic > Quartz-monzodiorite (Dike or sill)
Igneous > Plutonic > Dioritic > Monzodiorite (Dike or sill)
Igneous > Plutonic > Dioritic > Diorite (Dike or sill)including appinite and related rocks; including dioritic pegmatite
Igneous > Plutonic > Ultramafic > Hornblendite (Stock or pipe)
Igneous > Plutonic > Syenitic > Syenite (Stock or pipe)
Igneous > Plutonic > Syenitic > Quartz-syenite (Stock or pipe)
Igneous > Plutonic > Syenitic > Quartz-monzonite (Stock or pipe)
Igneous > Plutonic > Syenitic > Quartz-alkali-feldspar-syenite (Stock or pipe)
Igneous > Plutonic > Syenitic > Monzonite (Stock or pipe)
Igneous > Plutonic > Syenitic > Alkali-feldspar-syenite (Stock or pipe)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite (Stock or pipe)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Aplite (Stock or pipe)
Igneous > Plutonic > Granitic > Granodiorite (Stock or pipe)
Igneous > Plutonic > Granitic > Granite > Syenogranite (Stock or pipe)
Igneous > Plutonic > Granitic > Granite > Monzogranite (Stock or pipe)
Igneous > Plutonic > Granitic > Granite (Stock or pipe)
Igneous > Plutonic > Granitic > Alkali-feldspar-granite > Alkali-granite (Stock or pipe)
Igneous > Plutonic > Granitic > Alkali-feldspar-granite (Stock or pipe)
Igneous > Plutonic > Gabbroic > Quartz-monzogabbro (Stock or pipe)
Igneous > Plutonic > Gabbroic > Quartz-gabbro (Stock or pipe)
Igneous > Plutonic > Gabbroic > Monzogabbro (Stock or pipe)
Igneous > Plutonic > Gabbroic > Gabbro (Stock or pipe)
Igneous > Plutonic > Dioritic > Quartz-diorite (Stock or pipe)including appinite and related rocks; including dioritic pegmatite
Igneous > Plutonic > Dioritic > Quartz-monzodiorite (Stock or pipe)
Igneous > Plutonic > Dioritic > Monzodiorite (Stock or pipe)
Igneous > Plutonic > Dioritic > Diorite (Stock or pipe)including appinite and related rocks; including dioritic pegmatite
Map references
Richard, S. M., Reynolds, S.J., Spencer, J. E., and Pearthree, P. A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.
Unit references
Richard, S. M., Reynolds, S.J., Spencer, J. E., and Pearthree, P. A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.
Tosdal R.M., Haxel, G.B., and Wright, J.E., 1989, Jurassic geology of the Sonoran Desert region, southern Arizona, southeastern California, and northernmost Sonora: Construction of a continental-margin magmatic arc, in Jenney, J.P., and Rey
Geographic coverageCochise - La Paz - Maricopa - Pima - Santa Cruz - Yuma

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