About: Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic

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About: Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.irsm.cas.cz/abstracts/AGG/01_11/3_Adamovic.pdf
Description	Pore parameters of weathered and non-weathered sandstones were determined using mercury intrusion porosimetry. Two types of rock crusts were distinguished on morphological basis: 1. patterned rock crusts with a variety of weathering forms (honeycombs, wandkarren), and 2. armoured rock crusts with a relatively smooth, hardened layer. Patterned rock crusts show an increase in the size of macropores relative to unweathered sandstone, which implies an increase in total effective porosity. This is explained by the subflorescent growth of salt crystals. Armoured rock crusts on fine-grained sandstone show a reduced volume and size of macropores, as these are filled with clay mineral aggregates and gypsum crystals. Insufficient passability of macropores in the armoured layer for pore waters shifts the evaporation front deeper into the rock. This results in contour scaling as the main process of rock-surface degradation, as opposed to granular disintegration on patterned rock crusts. Pore parameters of weathered and non-weathered sandstones were determined using mercury intrusion porosimetry. Two types of rock crusts were distinguished on morphological basis: 1. patterned rock crusts with a variety of weathering forms (honeycombs, wandkarren), and 2. armoured rock crusts with a relatively smooth, hardened layer. Patterned rock crusts show an increase in the size of macropores relative to unweathered sandstone, which implies an increase in total effective porosity. This is explained by the subflorescent growth of salt crystals. Armoured rock crusts on fine-grained sandstone show a reduced volume and size of macropores, as these are filled with clay mineral aggregates and gypsum crystals. Insufficient passability of macropores in the armoured layer for pore waters shifts the evaporation front deeper into the rock. This results in contour scaling as the main process of rock-surface degradation, as opposed to granular disintegration on patterned rock crusts. (en)
Title	Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic (en)
skos:prefLabel	Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic (en)
skos:notation	RIV/67985891:_____/11:00359012!RIV12-AV0-67985891
http://linked.open...avai/predkladatel	Ústav struktury a mechaniky hornin AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA300130806), Z(AV0Z30130516), Z(AV0Z30460519)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Soukupová, Jana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav struktury a mechaniky hornin AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	221417
http://linked.open...ai/riv/idVysledku	RIV/67985891:_____/11:00359012
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	porosity; sandstone; rock crust; salt weathering; case hardening; honeycombs (en)
http://linked.open.../riv/klicoveSlovo	porosity sandstone case hardening honeycombs rock crust salt weathering
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[5BA208139BC5]
http://linked.open...i/riv/nazevZdroje	Acta geodynamica et geomaterialia
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	The concept of micro- to mesoscale sandstone weathering morphofacies in the temperate zone
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Mikuláš, Radek Adamovič, Jiří Böhmová, Vlasta Schweigstillová, Jana
http://linked.open...ain/vavai/riv/wos	000290696600003
http://linked.open...n/vavai/riv/zamer	Zemský systém v průsečíku geologických procesů, vývoje života, klimatických a antropogenních vlivů Research into the properties of geomaterials, development of methods of their ecological exploitation and interpretation of geodynamic processes
issn	1214-9705
number of pages	17 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic Porosity changes induced by salt weathering of sandstones, Bohemian Cretaceous Basin, Czech Republic

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