Footwall of vein marked by curving post-mineral fault raised above No. 4 level. The post-mineral movement probably followed an earlier break for the banding in the quartz (right) is nearly parallel to the fault. Plumbago Mine. Sierra County, California. 1924. Plate 16-A, in U.S.Geological Survey Professional paper 172. 1932.
Summary
Footwall of vein marked by curving post-mineral fault raised above No. 4 level. The post-mineral movement probably followed an earlier break for the banding in the quartz (right) is nearly parallel to the fault. Plumbago Mine. Sierra County, California. 1924. Plate 16-A, in U.S.Geological Survey Professional paper 172. 1932.
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