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Radium depletion and 210Pb/226Ra disequilibrium of Marítaro hydrothermal deposits, Los Azufres geothermal field, Mexico
hydrothermal deposits 210Pb 226Ra radium adsorption Los Azufres
2017/4/11
In order to calculate the chronology of hydrothermal deposits precipitated from hot springs at Marítaro, Los Azufres
geothermal field, Mexico, their 224Ra, 226Ra, 228Ra and 210Pb activities were meas...
岩溶山区表土中7Be、137Cs、226Ra和228Ra地球化学相分配的实验研究表明,4种核素绝大部分(85%以上)存在于Fe Mn氧化物、有机质及残渣相中。它们在表土的迁移过程中具微粒迁移性,能较好地随土粒般运,可作为土粒侵蚀或沉积的示踪剂。但其微粒示踪类型又各具特征：7Be的化学形态与其季节性微粒迁移示踪一致；137Cs的化学形态适用于示踪土粒累计性迁移和沉积计年；226Ra和228Ra存在于...