Sr/Ca, Oxygen Isotope, and Linear Extension Data for Five Holocene Orbicella faveolata Corals from Dry Tortugas and Marquesas Keys, Florida, USA

This data release contains new, 40–70-year long sub-annual strontium-to-calcium ratio (Sr/Ca) records and linear extension measurements from five mid-to-late Holocene, Orbicella faveolata corals from the Dry Tortugas National Park (DT) and Marquesas Keys (MK), Florida (FL). U.S. Geological Survey (USGS) researchers used these Sr/Ca data to calculate sea-surface temperature (SST) using the Sr/Ca-SST equation from Flannery and others (2018). The data release also provides paired Sr/Ca and stable oxygen isotope snapshots from two mid-Holocene corals. These data provide a proof-of-concept for the value of coral-based paleoclimate records in the subtropical western Atlantic during the Holocene. Detailed information regarding data collection and processing methods can be found in Jacobs and others (2025).

Flannery, J.A., Richey, J.N., Toth, L.T., Kuffner, I.B., and Poore, R.Z., 2018, Quantifying uncertainty in Sr/Ca‐Based estimates of SST from the coral Orbicella faveolata: Paleoceanography and Paleoclimatology, v. 33, no. 9, p. 958-973, https://doi.org/10.1029/2018PA003389.

Jacobs, J.A., Richey, J.N., Flannery, J.A., Thirumalai, K., and Toth, L.T., 2025, Snapshots of mid-to-late Holocene sea-surface temperature variability from a subtropical western Atlantic coral reef: Palaeogeography, Palaeoclimatology, Palaeoecology, 112777, ISSN 0031-0182, https://doi.org/10.1016/j.palaeo.2025.112777.