Global Isotopic Proxy Records for Ordovician Temperature Reconstruction
S2 Ordovician Stratigraphy, Ecosystem and the Habitability Evolution 📅 Add to Calendar✉ Corresponding: Isabel P. Montañez, Junxuan Fan
The Ordovician was a pivotal interval in Earth's history, marked by major biological diversification and extinction events that have been closely linked to climate change. Robust palaeotemperature reconstructions are essential for understanding Ordovician climate evolution and its links to biodiversity change. Here we present a curated dataset of 5,299 isotopic proxy data selected from an initial compilation of 15,406 measurements for Ordovician temperature reconstruction. The dataset is dominated by oxygen isotope (δ18O) data of bulk carbonates, brachiopod and conodont fossils (96.5%), and also includes a smaller subset of carbonate clumped isotope (Δ47) data (3.5%). By providing chronologically constrained and quality-screened proxy data, this publicly available dataset offers a foundation for regional- to global-scale analyses of Ordovician temperature change and for evaluating the role of climate in the Great Ordovician Biodiversification Event and the Late Ordovician Mass Extinction.
Affiliations
- School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth
- Material Cycling, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Critical Earth Material Cycling and Mineral Deposits, Nanjing
- University, Nanjing 210023, China
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei
- 230009, China
- Key Laboratory of Palaeobiology and Petroleum Stratigraphy, Nanjing Institute of Geology and
- Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
- Te Aka Mātuatua, University of Waikato (Tauranga), Bay of Plenty, Tauranga, New Zealand
- Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA
- Institute of the Environment, University of California, Davis, CA 95616, USA