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             PHOTOGRAPHS FROM DOCTORAL DISSERTATION OF RICHARD HAYES PHILLIPS:
         "PROSPECTS FOR REGIONAL GROUNDWATER CONTAMINATION DUE TO KARST LANDFORMS
             IN MESCALERO CALICHE AT THE WIPP SITE NEAR CARLSBAD, NEW MEXICO"

LEFT:  A joint-controlled slot, enlarged by solution, in carbonate-cemented Gatuna
sandstone at the WIPP-33 sinkhole.  The slot is 2 inches wide and one or more feet
deep.  It is visible for 5 feet of its length, 14 to 19 feet downslope from the caliche
escarpment.  The slot has rounded edges where water has dissolved the carbonate cement.

RIGHT:  Carbonate-cemented Gatuna sandstone 27 feet downslope from the caliche
escarpment at the WIPP-33 sinkhole.  The slots have rounded edges where water has
dissolved the carbonate cement.  One slot contains sandstone pebbles which are rounded
and pitted by solution.  The sandstone surfaces display irregular-shaped pits, often
coalescing, leaving solution-rounded residuals in relief.

For a full discussion of the geologic context of these photographs see "Direct Testimony"
                         http://www.cardnm.org/techsecfrm_a.html