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Fig. 6. Tianshui Section: field-observed pedostratigraphy and laboratory data. Md (µm): median size; <10 µm (%): percentage of <10-µm fraction; <2 µm (%): percentage of <2-µm fraction; CaCO3 (%): percentage of carbonate; and
: magnetic susceptibility (107 m3 kg1). Three groups of arrows (associated with three dashed lines 1, 2, 3) indicate carbonate leaching and accumulation for all three paleosols (S1S1, S1S2, S1S3).
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