POST-VOLCANIC PHENOMENA FROM MALNAȘ BĂI – ROMANIA AND EXPEDITIONARY MEASURMENT OF SPRINGS WATER

Abstract

The resort is located in a geological contact region. The faulted layers facilitate the water and the different gases ascending to the surface. Contact with different rocks fills the waters with mineral salts. These processes gave rise to mineral springs, gas emissions and peat marshes. The waters are situated in two horizons, the lower one from Cretaceous and the upper from Pliocene and Quaternary. Their use and exploitation began from the earliest times, reaching a peak in the second half of the nineteenth century and the beginning of the twentieth century. There was a period of reflux, but now the resort is trying to revive. The expedition measurements from 2019 have provided clarifications regarding the quantitative assessments and the qualitative properties of the mineral springs. The following parameters were analyzed at most important springs: hydrogen ion concentration, salinity, ion content, redox potential, TDS and the fixed residue. The results were obtained in the field and in the laboratory.

Keywords

• volcanism
• fault
• aquifer
• spring
• mineral salts
• carbon dioxide
• moffete