If you have results from geochemical/isotopic studies of biologically-associated minerals in terrestrial systems, we hope you will consider submitting an abstract to our session at the Goldschmidt 2024 meeting, 18-23 August, Chicago, IL, USA. Session details are below: Session title: Isotopic tracers and geochemistry of biominerals in terrestrial and freshwater systems (Session 10j) Description: The chemistry of biogenic minerals is notoriously complex, but has the potential to provide insights into both environmental conditions and biological processes. Organisms exert some amount of control over mineral precipitation, which chemically distinguishes biogenic minerals (e.g. shells, otoliths, fin rays) from those precipitated abiotically. This session intends to showcase scientists who use geochemical or isotopic tracers to (1) track environmental sources and processes recorded in the shells of freshwater or terrestrial organisms and /or (2) elucidate the dual roles of biological and environmental influences on the biomineralization processes and preservation of biosignatures. Topics may range from the use of novel isotope systems, biochemical ion transport mechanisms, schlerochronology of shells or otoliths as paleoclimate proxies, isotopic provenance studies of humans or other animals, preservation of geochemical signals during diagenesis, the use of trace metal chemistry in determining mobility of organisms, or other similar topics. Mineralized hard parts include carbonates (including amorphous calcium carbonate), sulfate minerals, silica, and apatite. Contributions regarding advances in analytical techniques, the development of novel isotopic proxies in biominerals, and studies of trace metal uptake into biogenic minerals are encouraged. Conveners: Kristi Dobra, Brian Stewart, Rosemary Capo Abstract Deadline: March 29 Conference website and abstract submission: https://conf.goldschmidt.info/goldschmidt/2024/meetingapp.cgi Thanks, Brian - - - - - - - - - - - - - - - - - - - - - - - - - - - Brian W. Stewart Associate Professor Director of Graduate Studies Department of Geology & Environmental Science University of Pittsburgh Pittsburgh, PA 15260, USA bstewart@pitt.edu https://www.geology.pitt.edu/person/brian-stewart Office location: 413 SRCC (Space Research Coordination Center) Main Geology Office: 412-624-8780 FAX: 412-624-3914 - - - - - - - - - - - - - - - - - - - - - - - - - - -