Pg. 19-20, 36 (table 1), pl. 1. Storff Formation. Black to brown thin-bedded phyllites and slates with interbedded argillaceous limestones. Thickness about 3,900 feet. Overlies Chellis Limestone (new); underlies Van Duzer Limestone (new); both contacts apparently conformable. Age is Silurian(?), based on regional correlation.
[Type locality not stated.] Named from Storff Creek which flows down western slope of Bull Run Mountains in northern part of Bull Run 15-min quadrangle, Elko Co., northeastern NV. Exposed on wide east-west band which crosses northern part of Bull Run Mountains.
Source: US geologic names lexicon (USGS Bull. 1350, p. 727); GNU records (USGS DDS-6; Menlo GNULEX).
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