Underground morpholithogenesis
https://doi.org/10.31857/S0435428121020097
Abstract
This article presents the model of scale-level organization of subrelief (“relief” of underground cavities) based on its genesis. There are 2 morphodynamic levels of subrelief evolution: underground morpholithogenesis (underground cavity formation) and imposed morpholithogenesis (formation of secondary landforms without significant changes of underground cavities). Morpholithogenesis is a process of synchronous formation of sediments and landforms or forms of subrelief. Further classification of suggests two hierarchical levels based on genesis and scale of landform formation. Scales are used according to the size of formed subrelief. These hierarchical levels of morpholithogenesis represent the balance of cavity genesis and her internal dynamic. Stages of W. Davis’s geographic cycles have been chosen as relative time units. Youthful stage corresponds to initial formation and active expansion of the underground cavity. The imposed subrelief actively evolve (for example stalactites and stalagmites in karst caves) in the cavity during mature stage. Then the cavity is being destroyed inside and eventually collapses at the old stage. This concept links the evolution of underground (sometimes semi-underground) cavities with “classical” surficial relief into a natural or natural-technogenic system and should be used as basic method to study subrelief.
Supporting agencies: The work was carried out under the State Research Task АААА-А16-11632810089-5 “Evolution of the environment, relief dynamics and the geomorphologic safety of nature management”.
About the Author
V. A. Nekhodtsev
Lomonosov Moscow State University
Russian Federation
Russian Federation
Faculty of Geography
Moscow
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Nekhodtsev V.A. Underground morpholithogenesis. Geomorfologiya. 2021;52(2):14-20. (In Russ.) https://doi.org/10.31857/S0435428121020097
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