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- W3096379142 abstract "This paper provides a review of recent publications dealing with different issues of sandstone geomorphology, which was long an under-researched theme. Nevertheless, considerable advances have been made recently regarding the origin of various characteristic landforms and landscapes developed in sandstones. The structure of this review reflects the diversity of spatial scales, so that it begins with minor landforms and moves towards regional landscapes, considering both the form and the process. It first focuses on the origin and evolution of microforms on rock surfaces, especially honeycombs and arcades, which have been demonstrated to reflect the distribution of stress within the rock mass and the hydraulic field. A distinction is made between ‘organizing’ and ‘decay’ factors, with the latter varying depending on local circumstances, whereas the overarching role of the former explains equifinality. Then the concept of negative feedback between stress and erosion is reviewed, with reference to medium-scale landforms, mainly pedestal rocks and rock arches. In the next part new evidence and ideas about the role of subsurface processes in shaping medium-size and major landforms is presented, with emphasis on chemical decay (arenization), mechanical erosion and sapping. Larger landforms discussed are rock cities and ruiniform relief, canyons and mesas. It is argued that subsurface processes play an important part in the evolution of rock cities and boulder-filled canyons, whereas recent work on residual hills shows that plateau ➔ mesa ➔ butte ➔ pinnacle trajectory is but one possible pathway of geomorphic evolution of tablelands. In the following part a new concept of in situ disintegration of sandstone-capped escarpments is presented as complementary to the widely accepted model emphasizing large scale, often catastrophic mass movements. Finally, recent attempts to use geomorphometry tools to characterize rugged sandstone relief are presented. The paper is closed with an outline of challenges for the future." @default.
- W3096379142 created "2020-11-09" @default.
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- W3096379142 date "2021-01-01" @default.
- W3096379142 modified "2023-10-06" @default.
- W3096379142 title "Sandstone geomorphology – Recent advances" @default.
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- W3096379142 doi "https://doi.org/10.1016/j.geomorph.2020.107484" @default.
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