Pedro Bank, Exuma Sound - Sclerosponge Sr/Ca Temperature Calibration Data Rosenheim, B.; Swart, P.K.; Thorrold, S.R.; Willenz, P.; Berry, L.; Latkoczy, C. Rosenheim, B. Swart, P.K. Thorrold, S.R. Willenz, P. Berry, L. Latkoczy, C. earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Ceratoporella nicholsoni,null,millimole per mole,null,corals and sclerosponges,raw,inductively-coupled plasma mass spectrometry|laser ablation,N,null) earth science/paleoclimate/instrumental (sea water temperature,null,null,degree Celsius,null,instrumental,null,null,N,in situ data logger) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Pedro Bank>LATITUDE 17.53>LONGITUDE -78.97) (Exuma Sound>LATITUDE 23.67>LONGITUDE -75.75) Ratios of strontium to calcium have been analyzed by laser-ablation inductively coupled plasmaŋmass spectrometry (LA-ICP-MS) in a skeletal section of the sclerosponge Ceratoporella nicholsoni. The growth period, representative of 3 yr, was stained in the skeleton with a fluorochrome (calcein). Temperatures were recorded at 2 h intervals within the shallow, cryptic reef enclosure that the sclerosponge inhabited on the northern coast of Jamaica, allowing the formulation of a direct empirical relationship between Sr/Ca and temperature. To verify this calibration, Sr/Ca ratios of two sclerosponges of the same species from depths of 67 m and 136 m in Exuma Sound, Bahamas, were analyzed by LA-ICP-MS and compared to the temperatures from these depths over a decade prior to collection. The result is an independently verified, high-resolution empirical calibration for the temperature sensitivity of Sr/Ca ratios in the aragonite skeletons of sclerosponges from Jamaica and the Bahamas. The calibration is a first for C. nicholsoni and indicates that sclerosponges are more sensitive temperature recorders than zooxanthellate corals. It represents an important step in establishing skeletal geochemistry of sclerosponges as a proxy of temperature in the upper 250 m of the ocean. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Rosenheim, B. Investigator : Swart, P.K. Investigator : Thorrold, S.R. Investigator : Willenz, P. Investigator : Berry, L. Investigator : Latkoczy, C. 2004-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1921 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/sclero-srca-calib2004.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/sclero-srca-calib2004.txt English https://www.ncdc.noaa.gov/paleo/study/1921 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/sclero-srca-calib2004.txt Rosenheim, B.E., P.K. Swart, S.R. Thorrold, P. Willenz, L. Berry, and C. Latkoczy. 2004. High resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. Geology, Vol. 32, No. 2, pp. 145-148, February 2004. START YEAR: 1890 AD * END YEAR: 1990 AD -78.97 17.53 -75.75 23.67