USGS - science for a changing world

Mineral Resources On-Line Spatial Data

Mineral Resources > Online Spatial Data > Geology > by state > Idaho

Rhyolite dikes and plugs; Miocene felsic subvolcanic feeder intrusions; Owyhee Plateau

Tertiary intrusive rock; where adequately dated, intrusions are denoted (Tmi, Tei).
StateIdaho
NameRhyolite dikes and plugs; Miocene felsic subvolcanic feeder intrusions; Owyhee Plateau
Geologic ageTertiary
Original map labelTi
CommentsTmif (Ti on map ID001 was changed to Tmif to indicate felsic composition. Tmif represents phenocryst-poor rhyolite dikes and plugs (ID112), interpreted as subvolcanic feeders for Miocene volcanic rhyolites of the Silver City Range (16 Ma, ID127).
Primary rock typerhyolite
Secondary rock type
Other rock types
Lithologic constituents
Major
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Dike or sill)feeder dikes for rhyolites of the Silver City Range (15.6-16 Ma)
Minor
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Stock or pipe)feeder plugs for rhyolites of the Silver City Range (15.6-16 Ma)
Map references
Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Unit references
Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Idaho Bureau of Mines and Geology, undated, Geology of the Jordan Valley quadrangle, Oregon-Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, scale 1:250,000.
Ekren, E.B., McIntyre, D.H., Bennett, E.H., and Malde, H.E., 1981, Geologic map of Owyhee County, Idaho, west of longitude 116o W.: U.S. Geological Survey Miscellaneous Investigations Series, Map I-1256, 1:125,000 scale.
Geographic coverageOwyhee

Show this information as [XML] - [JSON]

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=IDTmif;0
Page Contact Information: Peter Schweitzer