Groundwater chemistry of the Birmingham Triassic Sandstone aquifer and its relation to structure

Abstract

Summary Hydrochemical aspects of the Triassic Sandstone aquifer of the Birmingham area are discussed to show the effect of aquifer structure upon the quality and nature of ground-waters. The presence of faulting and its effects upon ground-water flow and quality are demonstrated by reference to major ion chemistry. Carbon isotope data show that old groundwater exists in an unconfined outcrop area, its distribution being controlled by a structural low in the base of the Triassic. Radiocarbon ages of 20 samples show that low levels of chloride (<20 mg/l) are indicative of old ground-waters.