Concentration of major ions, and composition of oxygen-18 and deuterium of groundwater samples in the Fuerte-Mayo Aquifer, Mexico

This dataset contains the concentration of major anions (Cl, NO3, CO3, HCO3, SO2, SO4,), major cations ( Ca, Mg, K ) and the composition of Oxygen-18 and deuterium of groudwater samples within the Fuerte-Mayo aquifer (FMA) in Northwestern Mexico. Groundwater samples were collected from forty-six wells drilled in different locations within the Fuerte-Mayo Aquifer. This aquifer is located in the southern coastal plains of the Mexican state of Sonora where it is mainly exploited for human consumption. Samples were collected during the dry season (March to May) of the years 2022 and 2023. In addition, the composition of Oxygen-18 and deuterium of accumulated ranifall samples at four sites in the FMA was determined during the monsoon season 2022. The goal of the dataset is to understand the water-rocks-land use interactions and the possible presence of sea water intrusion in wells near the coastline.本数据集涵盖墨西哥西北部富尔特-马约含水层（Fuerte-Mayo Aquifer, FMA）内地下水样品的主要阴离子（Cl、NO₃、CO₃、HCO₃、SO₂、SO₄）、主要阳离子（Ca、Mg、K）浓度，以及氧-18（Oxygen-18）与氘（deuterium）的同位素组成。研究团队从该含水层内不同布设点位的46口钻井中采集了地下水样品；该含水层坐落于墨西哥索诺拉州南部沿海平原，主要被开发用于居民生活供水。样品采集于2022年与2023年的旱季（3月至5月）。此外，本数据集还测定了2022年季风季期间，富尔特-马约含水层内4个监测点位的累积降雨样品的氧-18与氘同位素组成。本数据集的研究目标为厘清水-岩-土地利用之间的相互作用机制，以及沿海岸线附近钻井中可能存在的海水入侵现象。