Fig. 1: Records from the Talos Dome ice core. | Nature Communications

Fig. 1: Records from the Talos Dome ice core.

From: Jarosite formation in deep Antarctic ice provides a window into acidic, water-limited weathering on Mars

Fig. 1

a Ice-grain size; data from Montagnat et al.24. The arrow indicates the very large ice crystals (larger than 40 cm, observed but not quantified) below the depth of 1481 m. b Jarosite relative contribution with respect to Fe minerals found in TALDICE dust; grey dots refer to samples where jarosite was not identified, error bars correspond to standard deviations. c Energy position of the K-edge X-ray absorption line of the iron fraction within TALDICE dust, error bars correspond to standard deviations. d Dust grain size index; developed to highlight the granulometric anomalies observed in dust from the deepest part of TALDICE. e Concentration of insoluble mineral dust in ice samples along TALDICE: part of the data from Albani et al.66. f TALDICE δ18O record; data from Stenni et al.21. The AICC2012 chronology22,23 has been used to prepare the figure. The lower bar refers to the Marine Isotopic Stages (MIS) covered by TALDICE.

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