TY - RPRT TI - Water and rock geochemistry, geologic cross sections, geochemical modeling, and groundwater flow modeling for identifying the source of groundwater to Montezuma Well, a natural spring in central Arizona AU - Raymond H. Johnson AU - Ed DeWitt AU - Laurie Wirt AU - L. Rick Arnold AU - John D. Horton PY - 2011 DO - 10.3133/ofr20111063 UR - https://pubs.usgs.gov/publication/ofr20111063 ID - ofr20111063 ER -