Our knowledge of the past ocean relies upon measurable quantities in the sedimentary record that represent past conditions. The development of these proxies is driven by linking relationships between processes in the modern ocean and the transfer of signals into preserved archives, ranging from bulk sediment to species-specific fossils. The international GEOTRACES program has been surveying the global ocean distribution of trace elements and isotopes, many of which have specific paleoceanographic applications, including protactinium-thorium ratios and neodymium isotopes. Furthermore, the advancements GEOTRACES has made in the understanding of micronutrient metals, redox sensitive metals and nutrient isotopic ratios also have significant implications for our understanding of past ocean circulation, biological productivity, particle fluxes and climate. In this session we welcome abstracts focusing on either modern or past ocean systems that speak to the development, calibration, or modeling of proxies and/or any associated updates to our proxy-based understanding of ocean conditions.

• OS - Ocean Sciences

• GS: Geochemical Society -
• GSA: Geological Society of America -