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Origin of silty fracture fillings in crystalline bedrock
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
Clay Technology, AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
1990 (English)In: Geologiska föreningens i Stockholm förhandlingar, ISSN 0016-786X, Vol. 112, no 3, p. 209-213Article in journal (Refereed) Published
Abstract [en]

Silty fillings in subhorizontal fractures of large area are occasionally found at shallow depth in Swedish bedrock. The soil was deposited after widening of the fractures due to the rock stress conditions at the edge of retreating ice sheets, a probable further implication being artesian conditions leading to hydraulic lifting. It is concluded that if the rate of ice retreat was sufficiently high, the basal part of the ice would be adfrozen to still frozen rock, and highly pressurized meltwater discharged through interconnected, steep and flat-lying fractures, which became filled with soil material transported with the water.

Place, publisher, year, edition, pages
1990. Vol. 112, no 3, p. 209-213
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-6158DOI: 10.1080/11035899009454766Local ID: 45ca9750-8aa7-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-6158DiVA: diva2:979035
Note
Godkänd; 1990; 20090816 (svek)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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