Page 238 - Geochemistry of Oil Field Waters

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q75 <lop <lop ND lop ND <lop ND ND ND 2Op ND <lop <lop ND <lop ND 1OP

Zirconium md q25 <lop ND <lop <lop ND ND ND <lop ND ND ND ND ND ND ND ND ND ND <lop ND ND ND ND ND <lop <lop ND ND <lop ND ND ND ND

md concentrations in each area; ND = below detection limits; p = concentration
Vanadium q25 - _____. ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

q75 <lop <lop < 1P 2OP <lop <lop <lop <lop <lop <lop <lop 25P <lop <I op <lop 7P

md <1 op <lop ND 7P <lop <lop <lop <lop <lop <lop ND <lop <lop <lop <1 op <lop present 10P -.
Titanium q25 ~ <lop ND ND <lop ND ND ND <lop ND ND ND <lop <lop ND <lop <lop

q75 __. 400 200 750 700 400 300 450 300 400 650 200 450 50 45 60 22

Strontium md q25 300 140 85 45 350 75 450 150 15 200 90 65 300 180 90 75 250 100 300 90 100 20 95 50 25 ND 20 10 20 7 10 ND 13 16

Number of samples 22 79 88 24 148 74 34 15 21 118 25 55 22 28 18 116 - - - *' Medium (md; from Rittenhouse et al., 1969) and quartile (4) ** No data, less sensitive methods of analysis used. Includes Oklahoma Platform and Ardmore Basin.

Illinois Basin Louisiana and Texas Gulf Coast East Texas North Texas West Texas and New Mexico Permian only Pennsylvanian only Silurian and Devonian only Ordovician and Cambrian only Anadarko Basin Williston Basin, postPaleozoic Williston Basin, Paleozoic Powder River Basin Other Wyoming Colorado California Sea water Estimated detection limit ~ in ppb, otherwise ppm. *3