Stratigraphy, petrology, and some fossil data of the Roberts Mountains Formation, north-central Nevada

Silty laminated very fine grained carbonate is the host rock for the large gold-ore deposits at the Carlin and Cortez mines. After setting out the geological setting of the Formation, and the methods of study, the stratigraphy and petrology of the Formation are examined in detail, followed by the age of the formation, its correlation, environment of deposition, source of its detrital material, its trace elements and gold deposits