Miocene volcanic rocks (UTTmv;0)

State	Utah
Name	Miocene volcanic rocks
Geologic age	Late Oligocene to Middle Miocene
Original map label	Tmv
Comments	This unit mostly in Richfield 2 deg sheet. In the Delta sheet, includes the Topaz Mountain Rhyolite; also many local units
Primary rock type	ash-flow tuff
Secondary rock type	basalt
Other rock types
Lithologic constituents	Major Igneous > Volcanic > Felsic-volcanic (Pyroclastic, ash-flow) Minor Igneous > Volcanic > Felsic-volcanic (Flow) Incidental Igneous > Volcanic > Mafic-volcanic (Volcaniclastic) Igneous > Volcanic > Mafic-volcanic (Flow) Igneous > Volcanic > Felsic-volcanic (Pyroclastic, tuff) Sedimentary > Clastic > Conglomerate (Bed) Igneous > Volcanic > Felsic-volcanic (Pyroclastic, air fall) Igneous > Volcanic > Felsic-volcanic (Dome)
Map references	Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.
Unit references	Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000. Hintze, L.F., 1988, Geologic History of Utah: Brigham Young University Geology Studies Special Publication 7, 202 p. Stevens, T.A., Morris, H.T., and Rowley, P.D., 1990, Geologic map of the Richfield 1øx2ø quadrangle, west-central Utah: U.S. Geological Survey Map I-1901, scale 1:250,000. [http://pubs.er.usgs.gov/publication/i1901] Lindsey, D.A., 1979, Geologic map and cross sections of Tertiary rocks in the Thomas Range and northern Drum Mountains, Juab County, Utah: Miscellaneous Investigations Series Report I- 1176, scale 1:62,500. Shubat, M.A., Felger, T.J., and King, J.K., 1999, Geologic map of the Keg Mountain Ranch quadrangle, Juab County, Utah: Utah Geological Survey Miscellaneous Publication 99-5, 22 p, scale 1:24,000
Geographic coverage	Beaver - Garfield - Iron - Juab - Millard - Piute - Salt Lake - Sevier - Tooele - Utah - Washington - Wayne