Fig. 2
Stalagmite MAJ-1 with its reconstructed chronology and detailed mineralogy. (a) StalAge model37 of the upper 116 mm of Stalagmite MAJ-1. The thick black line represents the best fit, and the grey lines are the reconstructed uncertainty after the Monte Carlo simulations (see supplementary S4 for details on the Monte Carlo simulation). (b) Image of Stalagmite MAJ-1 with a longitudinal scale showing the trenches locations for U-Th chemistry, and the corresponding U-Th dates in BP. Materials with high detrital contents are highlighted with cross-fill pattern. The locations for XRD analyses are indicated with red stars along with the XRD results. XRD patterns and the phase percentages results are provided in the Supplementary. (c) Preliminary mineralogy map developed using Hyperspectral imaging, overlain with the location of XRD samples. (d) Mineralogy and microstratigraphic log obtained from HSI (blue) and optical petrographic observations using thin sections (orange), respectively. The spelean fabric code was adopted from the acronyms proposed by Frisia38. (e) Summary of calcite–aragonite classification combining XRD and optical microscopy observations.
