Freezing of rocks and formation of permafrost affect soils and produce specific signatures in their solid matrix. The macro- and micromorphological signatures of frost effects remain preserved in buried soils and can serve as explicit or implicit traces of past cryogenic environments. They are, respectively, cryoturbation, aggregation and size sorting of soil particles, gleying and peat formation in well drained soils upon impermeable permafrost. Such signatures are used, in terms of the cryotraceological approach, to reconstruct glacial environments during MIS-3 and MIS-2 events of the marine oxygen isotope stratigraphy in different regions.
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- Earth and Planetary Sciences(all)