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Lithological analysis of multiple size fractions of till
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Engineering Geology and Geophysics.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Engineering Geology and Geophysics. (Engineering Geology and Geophysics)
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Engineering Geology and Geophysics.
(English)Article in journal (Other academic) Submitted
Keyword [en]
clast lithology, stratigraphic tool, gravel analysis, size distribution, particle form
National Category
Geophysical Engineering Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-32362OAI: oai:DiVA.org:kth-32362DiVA: diva2:410280
Note
QS 20120326Available from: 2011-04-13 Created: 2011-04-13 Last updated: 2012-03-26Bibliographically approved
In thesis
1. Physical properties of coarse particles in till coupled to bedrock composition based on new 3D image analysis method
Open this publication in new window or tab >>Physical properties of coarse particles in till coupled to bedrock composition based on new 3D image analysis method
2010 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The physical properties of the coarse fraction of the till (0.4 to 20 cm) and the surface boulders have been studied at two different sites in Sweden. The research work included: development of a new image analysis software for 3D size and shape measurements of particles; lithological analysis on multiple size fractions in till and magnetic susceptibility survey on coarse till clasts, surface boulders and local bedrock.

The new 3D image analysis method provides an enormous amount of size and shape data for each particle in the coarse fraction (2 to 20 cm) in till. The method is suitable for field study, cost effective and the software is executable in Matlab. The field imaging method together with the image analysis software give non subjective results of size and shape of coarse particles and makes it feasible and easy to study representative sample size, which is one tonne for testing clasts of size up to 20 cm.

The lithological analysis of the multiple size fraction of the till clasts has been investigated on six different size fractions of the till (0.4 to 20 cm); the result of the different samples from the two sites shows that this method can potentially be used as a stratigraphic tool in the areas where there is no unique indicator lithologies.

The magnetic susceptibility has been made on the surface boulders, the 6-20 cm till fraction and on insitu bedrock outcrops near to the study sites. The method has good potential for determining stratigraphic relationships between different till units as well as for determining the provenance ofcoarse clasts and surface boulders.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. x, 43 p.
Series
Trita-LWR. LIC, ISSN 1650-8629 ; 2047
Keyword
Three-dimensional shape, Grain size, Till lithology, Natural aggregate, Till provenance, Magnetic susceptibility of rock, Physical property of till
National Category
Civil Engineering Geophysical Engineering
Identifiers
urn:nbn:se:kth:diva-11988 (URN)978-91-7415-563-1 (ISBN)
Presentation
2010-02-26, V77, Teknikringen 74, KTH, Stockholm, 10:15 (English)
Opponent
Supervisors
Note
QC 20110413Available from: 2010-02-09 Created: 2010-02-05 Last updated: 2011-04-13Bibliographically approved

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