Pg. 93 (chart 1), 102. South Ridge sandstone. Name applied to thick sequence of fine- to medium-grained thin- to thick-bedded tan to yellowish-tan weathering calcareous cemented quartz sandstone with thin interbedded grayish-tan silty limestone. Outcrops distributed over small area of about 900 sq. mi. in White Pine County, east-central Nevada (Great Basin province); see areal extent map. Occurs stratigraphically above Ely limestone (restricted); basal contact is middle Pennsylvanian regional unconformity. Disconformably underlies Riepe Spring limestone (new). Both South Ridge and Riepe Spring were formerly included in the Ely (restricted in this report to rocks above Chainman shale and below the regional unconformity). Age is Permian (Wolfcampian). Fusulinids (TRITICITES, SCHWAGERINA) of early Wolfcampian age recovered from near middle part. Report includes correlation chart.
Type section: in SE/4 sec. 25, T. 17 N., R. 61 E., White Pine Co., NV (Great Basin province). Named for South Ridge bench mark, in NE/4 SE/4 sec. 27, T. 17 N., R. 61 E., 2 mi due west of type section.
[Discrepancy: GNU records (USGS DDS-6; Denver GNULEX) state "no type locality designated." US geologic names lexicon (USGS Bull. 1200) indicate a type section is designated, which is presented here.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 3672): supplemental information from GNU records (USGS DDS-6; Denver GNULEX).