Lincoln Peak formation is named for Lincoln Peak in the southern Snake Range, White Pine Co, NV. Type section is on the south slope of the south fork of Lincoln Canyon, directly below the head of Johns Wash [T12N R68E, Wheeler Peak 15' quad]. Consists of silty shale and limestone in varying proportions (40:60 average). Both are medium to dark gray. Shale weathers light olive-gray to pale yellow-brown; to yellowish orange and grayish red toward base of unit. Most shaly beds 1/2-2 in thick; finer beds and laminae (some cross-bedded) common. Shale is micaceous and phyllitic near base. Limestone beds are 2-4 ft thick near top of section; rarely exceed 9 in elsewhere. Edgewise limestone-pebble conglomerates common in upper 150 ft; upper 400 ft contain nodular limestone beds. Thickness is 1031 ft at type. Overlies (thrust faulted) Pole Canyon limestone (new); conformably underlies Johns Wash limestone (new). Age is late Middle to early Late Cambrian on the basis of fossils [trilobites].

Source: GNU records (USGS DDS-6; Menlo GNULEX).

Known in the southern Snake Range, White Pine Co, NV where it underlies Johns Wash Limestone. Correlation with newly named members of the Orr Formation in the House Range and Wah Wah Mountains of Millard and Beaver Cos, UT and other formations in the Great Basin province, UT shown on fig. 2. Is of Middle and Late Cambrian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).