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Geology and ground-water resources of Medina County, Texas
Charles Lee Roy Holt
1959, Water Supply Paper 1422
The Edwards limestone of Cretaceous age is the principal water-bearing formation in Medina County and makes up the major part of a ground-water reservoir, or aquifier, which in places includes thinner limestone formations both above and below the Edwards. The Glen Rose limestone, also of Cretaceous age, yields moderate amounts...