Variation scale and heterogeneity of the lead isotope composition in sulfides from hydrothermal fields of the Mid-Atlantic Ridge: Evidence from high-precision MC-ICP-MS isotopic data

Systematic investigation of the Pb isotopic composition in sulfides from Mid-Atlantic Ridge (MAR) hydrothermal fields (HFs) associated with the two different above-mentioned geological types of the MAR spreading zone was performed. The narrow range of the Pb isotopic compositions of sulfides from concrete HFs provides evidence for the fact that the activity of deep hydrothermal systems (presumably convective cells) provides homogeneity of the isotopic characteristics of lead participating in the formation of sulfides from MAR HFs.