Radiocarbon Dates and Foraminiferal Geochemistry Data for Sediment Core Collected from Garrison Basin, Gulf of Mexico

Stable oxygen and carbon isotope composition (delta18O and delta13C) and magnesium-to-calcium (Mg/Ca) ratios were measured in the tests of planktic foraminiferal species, Globigerinoides ruber (white variety), in a northwestern Gulf of Mexico sediment core 2010-GB2-GC1 collected from the Garrison Basin (26.67 degrees N, 93.92 degrees W) at a water depth of 1776 meters (m), aboard the R/V Cape Hatteras in April 2010. These measurements are used to generate sub-centennial-scale reconstructions of sea surface temperature (SST) and the stable oxygen isotope composition of seawater (delta18Osw; a proxy for changes in salinity) over the past 11,700 years. For further information regarding data collection and/or processing methods, refer to the associated journal article (Thirumalai and others, 2021).

Thirumalai, K., Richey, J.N., and Quinn, T.M., 2021, Holocene evolution of sea-surface temperature and salinity in the Gulf of Mexico: Paleoceanography and Paleoclimatology, v. 36, no. 8, art. e2021PA004221, 24 p., https://doi.org/10.1029/2021PA004221.