Fast evolving conduits in clay-bonded sandstone: Characterization, erosion processes and significance for the origin of sandstone landforms

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10128248" target="_blank" >RIV/00216208:11310/12:10128248 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.geomorph.2012.07.028" target="_blank" >http://dx.doi.org/10.1016/j.geomorph.2012.07.028</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.geomorph.2012.07.028" target="_blank" >10.1016/j.geomorph.2012.07.028</a>

Result language
angličtina
Original language name
Fast evolving conduits in clay-bonded sandstone: Characterization, erosion processes and significance for the origin of sandstone landforms
Original language description
In Strelec Quarry, the Czech Republic, an underground conduit network >300 m long with a volume of similar to 10(4) m(3) and a catchment of 7 km(2) developed over 5 years by groundwater flow in Cretaceous marine quartz sandstone. Similar landforms at natural exposures (conduits, slot canyons, undercuts) are stabilized by case hardening and have stopped evolving. The quarry offers a unique opportunity to study conduit evolution in sandstone at local to regional scales, from the initial stage to maturity,and to characterize the erosion processes which may form natural landforms prior to stabilization. A new technique was developed to distinguish erodible and non-erodible sandstone surfaces. Based on measurements of relative erodibility, drilling resistance, ambient and water-saturated tensile strength (TS) at natural and quarry exposures three distinct kinds of surfaces were found. 1) Erodible sandstone exposed at similar to 60% of surfaces in quarry. This sandstone loses as much as 99%
Czech name
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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
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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