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. 2003 Oct 16;100(22):13111–13115. doi: 10.1073/pnas.2135068100

Table 3. Measured soil—water weight ratios for selected potential agricultural sites.

Soil site Ba/Sr Mg/Sr Y/Yb
Upper Newcomb drainage
   SS #1 0.57 12 15
   SS #3 0.35 13 17
   CTW #1B 0.19 21 14
   CTW #1C 0.11 23 16
Chaco Canyon sites
   WER #1 3.08 68 22
   WER #2 2.26 79 20
   WER #3 1.46 65 20
   LH #2 1.46 130 24

SS, Skunk Springs; CTW, Captain Tom Wash; WER, Weritos Rincon; LH, Lizard House.