Kuttanad area is part of the western coastal plains in Kerala characterized by a thick pile of Tertiary sediments underlying the Recent alluvium. The evolution of aquifer systems in these sediments are closely related to the geological history of the area and the groundwater in the Tertiary aquifer system was evolved during various marine transgressions and regressions. Chemical processes such as leaching of salts, cation exchange and chemical reactions under strong reducing environment modified the hydrochemistry of these aquifers. The salinization and freshening processes in the tertiary aquifer system elucidated from hydrogeological, hydro-chemical and stable isotope ( 2 H and 18 O) studies are documented in this paper. The hydrochemical and isotope studies corroborate with the observations in the earlier study on the flow regime in the coastal aquifers under SIDA assisted coastal hydrology project (CGWB, 1992).

中文翻译：

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喀拉拉邦库塔纳德地区第三系含水层系统水化学环境中的稳定同位素和主要离子破译

Kuttanad 地区是喀拉拉邦西部沿海平原的一部分，其特征是近代冲积层下方有厚厚的第三纪沉积物。这些沉积物中含水层系统的演化与该地区的地质历史密切相关，第三纪含水层系统的地下水是在各种海侵和海退过程中演化的。盐类浸出、阳离子交换和强还原环境下的化学反应等化学过程改变了这些含水层的水化学。本文记录了从水文地质、水化学和稳定同位素（ 2 H 和 18 O）研究中阐明的三级含水层系统中的盐渍化和清新过程。