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U.S. Geological Survey Water-Resources Investigations Report 03–4189

March 8, 2004

Hydrogeology of the D aquifer and movement and ages of ground water determined from geochemical and isotopic analyses, Black Mesa area, northeastern Arizona

The errors described below were detected after the report was printed and distributed.


Page 23, Table 3:

δ34S (sulfate) and δ18O (sulfate) values for some formations are incorrect.


The correct values are:


δ34S (sulfate)

Toreva Formation                                                          2.5

Mancos Shale                                                               3.3

Navajo Sandstone (top entry)                                         (2)


δ18O (sulfate)

Toreva Formation                                                          0.0

Mancos Shale                                                              11.8

Navajo Sandstone (top entry)                                         (2)


We apologize for any problems this may have caused.


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