Sandstone landforms shaped by negative feedback between stress and erosion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10284628" target="_blank" >RIV/00216208:11310/14:10284628 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/14:00432542 RIV/67985891:_____/14:00432542
Result on the web
<a href="http://dx.doi.org/10.1038/NGEO2209" target="_blank" >http://dx.doi.org/10.1038/NGEO2209</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/NGEO2209" target="_blank" >10.1038/NGEO2209</a>

Result language
angličtina
Original language name
Sandstone landforms shaped by negative feedback between stress and erosion
Original language description
Weathering and erosion of sandstone produces unique landforms(1,2) such as arches, alcoves, pedestal rocks and pillars. Gravity-induced stresses have been assumed to not play a role in landform preservation(3) and to instead increase weathering rates(4,5). Here we show that increased stress within a landform as a result of vertical loading reduces weathering and erosion rates, using laboratory experiments and numerical modelling. We find that when a cube of locked sand exposed to weathering and erosionprocesses is experimentally subjected to a sufficiently low vertical stress, the vertical sides of the cube progressively disintegrate into individual grains. As the cross-sectional area under the loading decreases, the vertical stress increases until acritical value is reached. At this threshold, fabric interlocking of sand grains causes the granular sediment to behave like a strong, rock-like material, and the remaining load-bearing pillar or pedestal landform is resistant to further
Czech name
—
Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
—

Project
<a href="/en/project/GA13-28040S" target="_blank" >GA13-28040S: Multi-approach study of processes in sandstone exposures: new view on study and interpretation of selected sandstone landforms</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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