Mobility of Radiogenic Isotopes 4Не and 3Не and Their Retention in a Mineral (by the Example of Amphibole)

Doklady Earth Sciences -     

The Formation and Balance of the Atmospheric Precipitations,Surface Water,and Groundwater on the Southern Slopes of the Khibiny Massif (Based on Data on the Isotopic Composition of Oxygen and Hydrogen)

Water Resources - The δ2H and δ18O values of the atmospheric precipitations in the Khibins vary within the range –147 ≤ δ2H ≤ –37‰, –20 ≤...     

The tritium-helium-3 method and its application to groundwater dating by the example of the Kirovsk mine region,Murmansk oblast

The measurement of ³H, ³He, ⁴He, and ²⁰Ne concentrations in waters at the Tsentralny pumping station (southern Khibiny massif, Kola Peninsula) showed that they are a mixture of young (>90%) and old (<10%) waters. The excess noble gas component from the young water is caused by the dissolution of air bubbles trapped during recharge in the unsaturated zone. The ³H-³He(³H) age of the young water is 21 ± 1.5 yr. The U-Th-4He age of the old water is about 50 ka. The high concentrations of helium and some toxic elements (e.g., aluminum) in this old water are caused by dissolution of the alkaline rocks of the Khibiny massif as a result of water-rock interaction.