March 03, 2022
Stable isotopes are formidable tracers of physicochemical processes at all scales. Steady advances in mass spectrometry have allowed isotopic inquiries to move from the so-called “traditional” systems (i.e., H, C, N, O, and S) to heavier “nontraditional” systems (e.g., Fe, Mo, Ti, Zr, U) whose diverse geochemical characteristics are providing novel and complementary insights. Moving from micron-size systems (single crystals) to planetary-size bodies, the articles in this issue explore the enormous range of temporal and physical scales over which heavy stable isotopes have provided paradigm-shifting insights into the evolution of our planet and solar system. Also highlighted are new frontiers where novel stable isotope systematics appear particularly promising for unraveling long-standing questions. Current Geochemical Society members can access this issue now via the Elements website using your email address (UserID) and member number (Password).