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<br />FIGURES-Continued
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<br />Photographs showing:
<br />4. Ourcropping strata of the Brushy Basin and Westwater Canyon Members of the Morrison
<br />Formation, capped by the Dakota Sandstone, in the Greater Aneth Oil Field, San Juan
<br />
<br />County, Utah........... .................................. ............................ ............................ ............. ..............
<br />5. Navajo Nation windmill and holding tank near the Greater Aneth Oil Field, San Juan
<br />
<br />County, Utah........... ...... ......... ............ ..... .................. ........................ ...........................................
<br />6. Hand-pump water well in alluvial deposits near Montezuma Creek in the Greater Aneth
<br />Oil Field, San Juan County, Utah ...............................................................................................
<br />7. Abajo Mountains near Monticello, Utah, about 35 miles nonh of the study area, San Juan
<br />
<br />County, Utah .......... ........... ................. ............. ......... ........................... .... .................. ........ ..........
<br />8. Map showing generalized potentiometric surface of the Navajo aquifer, directions of ground. water
<br />movement, and area where hydraulic head in upper Paleozoic aquifer is higher than that in
<br />Navajo aquifer, southeastern San Juan County, Urah .......................................................................
<br />
<br />9. Photographs showing flowing water wells N30 (top) and N 16 (bottom) in the Greater Aneth Oil
<br />Field, San Juan County, Utah .............................................................................................................
<br />
<br />10. Map showing location of selected wells, springs, surface-water sites, precipitation sites, and
<br />brine-injection facilities in and near the Greater Aneth Oil Field, San Juan County, Utah ...............
<br />
<br />II. Box plots showing relation of the specific conductance of water from the Navajo aquifer
<br />from wells and springs in the State of Utah .......................................................................................
<br />
<br />Graphs showing:
<br />
<br />12. Variarion in specific conductance of water from selected wells completed in the Navajo
<br />aquifer in and near the Greater Aneth Oil Field, San Juan County, Utah .............. ............
<br />
<br />13. Bromide and chloride concentration in water samples collected in and near the Greater
<br />Aneth Oil Field, San Juan County, Utah, compared with the bromide-to-chloride weight
<br />ratio of modern standard mean ocean water................................................................................
<br />
<br />4-7.
<br />
<br />12-20.
<br />
<br />14. Bromide-to-chloride weight ratios compared with chloride concentration in end-member
<br />water groups in and near the Greater Aneth Oil Field, San Juan County, Utah ..........................
<br />
<br />15. Mixing lines constructed between potential saline end-member water samples collected in
<br />and near the Greater Aneth Oil Field, San Juan County, Utah, compared with bromide-
<br />to-chloride weight ratios in water from the Navajo aquifer with chloride concentrations
<br />greater than 60 milligrams per liter ............................................................................................
<br />
<br />16. Iodide-to-chloride weight ratios compared wirh chloride concentration in water samples
<br />collected in and near the Greater Aneth Oil Field, San Juan County, Utah ...............................
<br />
<br />17. Mixing lines constructed between potential saline end-member water samples collected in
<br />and near the Greater Aneth Oil Field, San Juan County, Utah, compared with iodide-
<br />to-chloride weight ratios in water from the Navajo aquifer with chloride concentrations
<br />greater than 60 milligrams per liter .............................................................................................
<br />
<br />18. The 00 and ot80 values of ground-water, surface-water, and snow samples collected in
<br />and near the Greater Aneth Oil Field, San Juan County, Utah, in relation to the Nonh
<br />American and arid-zone meteoric water lines .............................................................................
<br />
<br />19. Mixing lines constructed using the 00 and 0'80 values of water samples collected in and
<br />near the Greater Aneth Oil Field, San Juan County, Utah...........................................................
<br />
<br />20. The 00 and 0'80 values of water from wells completed in the Navajo aquifer in areas I
<br />and 2 in relation to the 00 and 0180 values of other water samples collected in and near the
<br />Greater Aneth Oil Field, San Juan County, Utah ........................................................................
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