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- W1996668881 abstract "Geochemical observations indicate that planktic foraminifer test Mg/Ca is heterogeneous in many species, thereby challenging its use as a paleotemperature proxy for paleoceanographic reconstructions. We present Mg/Ca and Ba/Ca data collected by laser ablation ICP-MS from the shells of Orbulina universa cultured in controlled laboratory experiments. Test calcite was labeled with Ba-spiked seawater for 12 h day or night calcification periods to quantify the timing of intratest Mg-banding across multiple diurnal cycles. Results demonstrate that high Mg bands are precipitated during the night whereas low Mg bands are precipitated during the day. Data obtained from specimens growing at 20 °C and 25 °C show that Mg/Ca ratios in both high and low Mg bands increase with temperature, and average test Mg/Ca ratios are in excellent agreement with previously published empirical calibrations based on bulk solution ICP-MS analyses. In general, Mg band concentrations decrease with increasing pH and/or [CO2−3] but this effect decreases as experimental temperatures increase from 20 °C to 25 °C. We suggest that mitochondrial uptake of Mg2+ from the thin calcifying fluid beneath streaming rhizopodial filaments may provide the primary locus for Mg2+ removal during test calcification, and that diurnal variations in either mitochondrial density or activity produce Mg banding. These results demonstrate that Mg banding is an inherent component of test biomineralization in O. universa and show that the Mg/Ca paleothermometer remains a fundamental tool for reconstructing past ocean temperatures from fossil foraminifers." @default.
- W1996668881 created "2016-06-24" @default.
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- W1996668881 date "2015-01-01" @default.
- W1996668881 modified "2023-10-14" @default.
- W1996668881 title "Timing and mechanism for intratest Mg/Ca variability in a living planktic foraminifer" @default.
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- W1996668881 cites W1606240890 @default.
- W1996668881 cites W1625329436 @default.
- W1996668881 cites W1630140683 @default.
- W1996668881 cites W1636038776 @default.
- W1996668881 cites W1637979207 @default.
- W1996668881 cites W1754578189 @default.
- W1996668881 cites W1854664486 @default.
- W1996668881 cites W1870315799 @default.
- W1996668881 cites W1933408006 @default.
- W1996668881 cites W1955177783 @default.
- W1996668881 cites W1968988439 @default.
- W1996668881 cites W1973193929 @default.
- W1996668881 cites W1976474576 @default.
- W1996668881 cites W1977754125 @default.
- W1996668881 cites W1978191770 @default.
- W1996668881 cites W1990955220 @default.
- W1996668881 cites W1992161729 @default.
- W1996668881 cites W1993235151 @default.
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- W1996668881 cites W2007742342 @default.
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- W1996668881 cites W2009478519 @default.
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- W1996668881 cites W2024436619 @default.
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- W1996668881 cites W2030604405 @default.
- W1996668881 cites W2032405113 @default.
- W1996668881 cites W2034237911 @default.
- W1996668881 cites W2042773045 @default.
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- W1996668881 cites W2052839099 @default.
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- W1996668881 cites W2059709038 @default.
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- W1996668881 cites W2071419644 @default.
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- W1996668881 cites W2100371319 @default.
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- W1996668881 cites W2109836886 @default.
- W1996668881 cites W2120537950 @default.
- W1996668881 cites W2124748305 @default.
- W1996668881 cites W2125776675 @default.
- W1996668881 cites W2135968200 @default.
- W1996668881 cites W2135971946 @default.
- W1996668881 cites W2138169388 @default.
- W1996668881 cites W2147028570 @default.
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- W1996668881 cites W2166276153 @default.
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- W1996668881 doi "https://doi.org/10.1016/j.epsl.2014.10.030" @default.
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