| |
| | Travel Times Along Selected Flow Paths of the Edwards Aquifer, Central Texas |
 | | The Balcones fault zone is characterized by a series of en echelon faults that trend southwest to northeast along the length of the region (fig. |
 | | Wermund, E.G., Cepeda, J.C., and Luttrell, P.E., 1978, Regional distribution of fractures in the southern Edwards Plateau and their relationship to tectonics and caves: Austin, University of Texas, Bureau of Economic Geology, Geologic Circular 78-2, 14 p. |
 | | Wermund, E.G., Morton, R.A., Cannon, P.J., Woodruff, C.M., Jr., and Deal, D.E., 1974, Test of environmental geologic mapping, southern Edwards Plateau, southwest Texas: Geological Society of America Bulletin, v. |
| water.usgs.gov /ogw/karst/kigconference/elk_traveltimes.htm (4834 words) |
|