1. Interpretive geologic map of the bedrock, showing radioactivity, and aeromagnetic map of the Salisbury, Southmont, Rockwell, and Gold Hill quadrangles, Rowan and Davidson counties, North Carolina [cartographic material] Yale Public content 1975. 2013-08-20T14:53:50Z. 2014-09-09T22:09:49Z. Stromquist, Arvid A. U.S. Geological Survey. English. Public. North Carolina, Rowan County, and Davidson County.