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. 2000 Mar 21;97(8):3814–3819. doi: 10.1073/pnas.070047197

Figure 6.

Figure 6

Profile of mass accumulation rate of aluminum (AL-MAR in mg/cm2/yr) in sediments of Elk Lake, Minnesota [from Dean (ref. 8, Fig. 2)]. Overlain in red are the times of peak forcing in the 1,800-year tidal cycle (at 4,239, 5,921, and 7,744 yr BP).