Figure 14. Bentonitic shale with large concretions in upper part of Seabee Formation, east fork of Tuluga River. View to west. Largest concretions are approximately 4 ft in diameter. Photograph by C.G. Mull. PRINT/VIEW a high-quality PDF image |
U.S. Department of the Interior, U.S. Geological Survey
URL: https://pubsdata.usgs.gov/pubs/pp/p1673/thumbnails/fig14.html
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