Average concentrations of elements in Dallas County, Arkansas

    Counties page > Na in Conterminous US > Na in south-central US > Averages in Dallas County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)1.8200.5660.3814.197
ArsenicAs (ppm)2.8030.5731.1684.544
CalciumCa (wt%)0.0660.0240.0130.158
CopperCu (ppm)5.1130.9742.3338.524
IronFe (wt%)0.6580.1400.1901.396
MercuryHg (ppm)0.0270.0080.0100.053
MagnesiumMg (wt%)0.0890.0390.0190.313
ManganeseMn (ppm)165.27291.25641.986672.757
SodiumNa (wt%)0.1080.0400.0130.233
PhosphorusP (wt%)0.0130.0030.0050.028
LeadPb (ppm)9.7521.3976.08813.870
SeleniumSe (ppm)0.2620.0810.1050.566
TitaniumTi (wt%)0.2850.0330.1750.367
ZincZn (ppm)20.4667.9388.92573.155

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