North Atlantic Globorotalia inflata coretop Mg/Ca calibrations and temperature reconstructions over Termination I

Elizabeth J. Farmer, Mark R. Chapman, Julian E. Andrews

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Mg/Ca ratios from planktonic foraminifera are widely used as an independent proxy for ocean temperature. The choice of calibration is vital for reconstructing meaningful temperatures. We present preliminary results based on a new Mg/Ca-temperature calibration (Mg/Ca = 0.92e0.039T) for the thermocline-dwelling foraminifera Globorotalia inflata, derived using a suite of North Atlantic coretops. The downcore Mg/Ca record from core SU90–03 (40°N, 32°W) was used to compare how our new and existing calibrations performed for the Holocene and over the large scale change associated with Termination I.
Original languageEnglish
Article number012019
JournalIOP Conference Series: Earth and Environmental Science
Publication statusPublished - 2010

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