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Early Proterozoic metavolcanic rocks

Weakly to strongly metamorphosed volcanic rocks. Protoliths include basalt, andesite, dacite, and rhyolite deposited as lava or tuff, related sedimentary rock, and shallow intrusive rock. These rocks, widely exposed in several belts in central Arizona, include metavolcanic rocks in the Yavapai and Tonto Basin supergroups. (1650 to 1800 Ma)
StateArizona
NameEarly Proterozoic metavolcanic rocks
Geologic ageEarly Proterozoic
Original map labelXmv
Primary rock typegreenstone
Secondary rock typeintermediate metavolcanic rock
Other rock typesamphibolite; andesite; basalt; chert; conglomerate; dacite; diabase; diorite; gabbro; gneiss; greenschist; granite; granodiorite; graywacke; felsic metavolcanic rock; metarhyolite; gabbro; migmatite; phyllite; quartz diorite; quartzite; rhyolite; volcanic breccia (agglomerate); schist; siltstone; sandstone; serpentinite; iron formation
Lithologic constituents
Minor
Metamorphic > Greenstone (Greenschist)
Metamorphic > Schist (Greenschist)includes chlorite schist, magnesian schist
Metamorphic > Metavolcanic (Greenschist)includes spilite, keratophyre, meta-andesite, metadacite, metarhyolite
Metamorphic > Schist (Amphibolite, epidote-amphibolite)includes chlorite schist, magnesian schist
Metamorphic > Metavolcanic (Amphibolite, epidote-amphibolite)includes spilite, keratophyre, meta-andesite, metadacite, metarhyolite
Metamorphic > Greenstone (Amphibolite, epidote-amphibolite)
Metamorphic > Amphibolite (Amphibolite, epidote-amphibolite)
Metamorphic > Schist (Amphibolite)includes chlorite schist, magnesian schist
Metamorphic > Metavolcanic (Amphibolite)includes spilite, keratophyre, meta-andesite, metadacite, metarhyolite
Metamorphic > Greenstone (Amphibolite)
Metamorphic > Amphibolite (Amphibolite)
Incidental
Metamorphic > Gneiss (Hornfels)
Metamorphic > Granofels (Hornfels)
Metamorphic > Marble (Hornfels)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-dacite (Stock or pipe)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-andesite (Stock or pipe)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basaltic-andesite (Stock or pipe)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Stock or pipe)includes diabase
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Volcaniclastic)
Igneous > Volcanic > Felsic-volcanic > Dacite (Volcaniclastic)
Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic)
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Volcaniclastic)
Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic)
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic)
Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic)
Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic)
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Pyroclastic)
Igneous > Volcanic > Mafic-volcanic > Basalt (Pyroclastic)
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow)
Igneous > Volcanic > Felsic-volcanic > Dacite (Flow)
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow)
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)
Metamorphic > Skarn (Greenschist)
Metamorphic > Hornfels (Hornfels)
Metamorphic > Skarn (Hornfels)
Metamorphic > Schist (Hornfels)includes chlorite schist, magnesian schist
Metamorphic > Serpentinite (Hornfels)
Metamorphic > Quartzite (Hornfels)
Metamorphic > Migmatite (Hornfels)
Metamorphic > Metavolcanic (Hornfels)includes spilite, keratophyre, meta-andesite, metadacite, metarhyolite
Metamorphic > Metasedimentary (Hornfels)includes metaconglomerate, metachert
Metamorphic > Greenstone (Hornfels)
Metamorphic > Amphibolite (Hornfels)
Metamorphic > Gneiss (Greenschist)
Metamorphic > Granofels (Greenschist)
Metamorphic > Marble (Greenschist)
Metamorphic > Hornfels (Greenschist)
Metamorphic > Serpentinite (Greenschist)
Metamorphic > Quartzite (Greenschist)
Metamorphic > Migmatite (Greenschist)
Metamorphic > Metasedimentary (Greenschist)includes metaconglomerate, metachert
Metamorphic > Gneiss (Amphibolite, epidote-amphibolite)
Metamorphic > Granofels (Amphibolite, epidote-amphibolite)
Metamorphic > Marble (Amphibolite, epidote-amphibolite)
Metamorphic > Hornfels (Amphibolite, epidote-amphibolite)
Metamorphic > Skarn (Amphibolite, epidote-amphibolite)
Metamorphic > Serpentinite (Amphibolite, epidote-amphibolite)
Metamorphic > Quartzite (Amphibolite, epidote-amphibolite)
Metamorphic > Migmatite (Amphibolite, epidote-amphibolite)
Metamorphic > Metasedimentary (Amphibolite, epidote-amphibolite)includes metaconglomerate, metachert
Metamorphic > Gneiss (Amphibolite)
Metamorphic > Granofels (Amphibolite)
Metamorphic > Marble (Amphibolite)
Metamorphic > Hornfels (Amphibolite)
Metamorphic > Skarn (Amphibolite)
Metamorphic > Serpentinite (Amphibolite)
Metamorphic > Quartzite (Amphibolite)
Metamorphic > Migmatite (Amphibolite)
Metamorphic > Metasedimentary (Amphibolite)includes metaconglomerate, metachert
Sedimentary > Chemical (Bed)tourmalinite; massive-sulfide rock (several types)
Sedimentary > Chemical > Chert (Bed)includes ferruginous chert
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Mudstone (Bed)
Sedimentary > Clastic > Sandstone > Graywacke (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
Sedimentary > Chemical > Banded-iron-formation (Bed)
Igneous > Volcanic > Ultramafic > Picrite (Flow)
Igneous > Hypabyssal > Lamprophyre (Dike or sill)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite (Dike or sill)
Igneous > Plutonic > Granitic > Leucocratic-granitic > Aplite (Dike or sill)
Igneous > Plutonic > Granitic > Granite (Dike or sill)
Igneous > Plutonic > Granitic > Granodiorite (Dike or sill)
Igneous > Plutonic > Dioritic > Quartz-diorite (Dike or sill)
Igneous > Plutonic > Dioritic > Diorite (Dike or sill)
Igneous > Plutonic > Gabbroic > Gabbro (Dike or sill)
Igneous > Plutonic > Granitic > Granite (Stock or pipe)
Igneous > Plutonic > Granitic > Granodiorite (Stock or pipe)
Igneous > Plutonic > Dioritic > Quartz-diorite (Stock or pipe)
Igneous > Plutonic > Dioritic > Diorite (Stock or pipe)
Igneous > Plutonic > Gabbroic > Gabbro (Stock or pipe)includes diabase
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Dike or sill)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-dacite (Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-andesite (Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basaltic-andesite (Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Dike or sill)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Stock or pipe)includes granophyre
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.
Anderson, P., 1989, Stratigraphic framework, volcanic-plutonic evolution, and vertical deformation of the Proterozoic volcanic belts of central Arizona, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Ge
Conway, C.M., and Silver, L.T., 1989, Early Proterozoic rocks (1710 - 1615 Ma) in central and southeastern Arizona, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 165-18
Geographic coverageCoconino - Gila - Maricopa - Mohave - Yavapai

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