SPATIOTEMPORAL FLUCTUATIONS OF THE CHEMIC AL-COMPOSITION AND THE STRONTIUM ISOTOPIC-RATIOS (SR-87 SR-86) OF MINERAL WATERS FROM THE LIMAGNE-DALLIER (FRANCE)/

Spatial differences in levels; of major and trace elements and isotope s (O, D, Sr-87-/Sr-86 ratio) in selected mineral springs near the Rive r Allier are presented in this Note. The investigation area is the eme rgence zone of mineral waters of the Limagne d'Allier, between Clermon t-Ferrand and and Issoire. These mineral waters contain bicarbonate, c hloride and sodium. A delta(2)H versus delta(18)O diagram situates the m between the local and global meteoric lines. In the emergence field of the Limagne d'Allier springs the Sr-87/Sr-86 ratios are remarkably uniform; only ata spring at Coudes is this ratio high. Fluctuations wi th time were studied at one of the unexploited boreholes at Sainte-Mar guerite. Some of the elements determined varied greatly between the ob served maximum and minimum. At first, the Sr-87/Sr-86 ratios, taken mo nthly, varied little, brit then increased significantly for 6 months b efore returning to initial values.