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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F11%3A00359012" target="_blank" >RIV/67985831:_____/11:00359012 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/11:00359012

Result on the web

<a href="http://www.irsm.cas.cz/abstracts/AGG/01_11/3_Adamovic.pdf" target="_blank" >http://www.irsm.cas.cz/abstracts/AGG/01_11/3_Adamovic.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language 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 explainedby 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 thearmoured 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

<a href="/en/project/IAA300130806" target="_blank" >IAA300130806: The concept of micro- to mesoscale sandstone weathering morphofacies in the temperate zone</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta geodynamica et geomaterialia

ISSN

1214-9705

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

17

Pages from-to

29-45

UT code for WoS article

000290696600003

EID of the result in the Scopus database

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