Extended Data Fig. 6: Calibration of XRF scanner data with discrete sample results measured with ICP-OES. | Nature Geoscience

Extended Data Fig. 6: Calibration of XRF scanner data with discrete sample results measured with ICP-OES.

From: South Pacific carbon uptake controlled by West Antarctic Ice Sheet dynamics

Extended Data Fig. 6: Calibration of XRF scanner data with discrete sample results measured with ICP-OES.

(a) Potassium (K). (b) Strontium (Sr). (c) Titanium (Ti). (d) Iron (Fe). (e) Calcium (Ca). (f) Barium (Ba). (g) Aluminium (Al). All XRF scanner data in (a) – (g) are the peak area signal intensities. Linear regressions calculated for n = 137 samples (no XRF scanner data at the depth of n = 2 discrete samples, except for (a) and (c) where n = 139 samples) used to calibrate high resolution XRF-scanner data. Grey shadings indicate 95% confidence intervals. See Methods for more details.

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