Limestone, dolomite, and shale (NVPMc;0)

State	Nevada
Name	Limestone, dolomite, and shale
Geologic age	Mississippian to Permian
Original map label	PMc
Comments	The Van Duzer Limestone is more than 7,200 feet thick but is limited to one large outcrop in Bull Run Quadrangle. See NVOCt for the other rocks in the area which resemble the Van Duzer Limestone. The remainder of this unit is described by Coats, 1987, as "the unit of limestone, shale, chert, orthoquartzite, and quartz siltite". It includes the Poorman Peak and Hammond Creek Formations as well as outcrops too faulted to be divided into formations. Thicknesses range from 1,800 to 4,300 feet thick. Coats, 1987, does not include dolomite in this unit.
Primary rock type	limestone
Secondary rock type	shale
Other rock types	sandstone; quartzite; siltstone; chert; conglomerate
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale (Bed)Possibly only minor in rank but generally prevelent throughout unit. Sedimentary > Carbonate > Limestone (Bed) Minor Sedimentary > Clastic > Siltstone (Bed) Metamorphic > Quartzite Incidental Sedimentary > Clastic > Conglomerate (Bed)Locally present in the valley of Camp Creek Sedimentary > Chemical > Chert (Bed)May also be present in lenses and nodules. Sedimentary > Clastic > Sandstone (Bed)Possibly minor in rank, though unlikely, depending on how much of it is considered quartzite. Mostly arenite.
Map references	Stewart, J.H., and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey and Nevada Bureau of Mines and Geology, 1:500,000 (not part of any formal series, printed and distributed by the U.S. Geological Survey, G75163, reprinted, 1981, G81386).
Unit references	Stewart, J.H., and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey and Nevada Bureau of Mines and Geology, 1:500,000 (not part of any formal series, printed and distributed by the U.S. Geological Survey, G75163, reprinted, 1981, G81386). Stewart, J. H., 1980, Geology of Nevada: A discussion to accompany the Geologic Map of Nevada: Nevada Bureau of Mines and Geology Special Publication 4. Coats, R.R., 1987, Geology of Elko County, Nevada: Nevada Bureau of Mines and Geology Bulletin 101, 112 p., 1 pl.
Geographic coverage	Elko - White Pine