Sharp hanging-wall contact in the main east crosscut of the Knight mine. Rockingham County, North Carolina. 1943.
Dates
Acquisition
1943
Summary
Sharp hanging-wall contact in the main east crosscut of the Knight mine. Note the fine- grained border zone and coarse mica books (dark gray to black) in the wall zone. Rockingham County, North Carolina. circa 1943. Figure 7, in U.S.Geological Survey Professional paper 248. 1953.
Summary
Sharp hanging-wall contact in the main east crosscut of the Knight mine. Note the fine- grained border zone and coarse mica books (dark gray to black) in the wall zone. Rockingham County, North Carolina. circa 1943. Figure 7, in U.S.Geological Survey Professional paper 248. 1953.
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