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Deformation in Jurassic-Cretaceous redbeds from Champasak and Khammouane, Lao PDR, revealed by anisotropy of magnetic susceptibility
Geophysics Unit, Department of Physics, Faculty of Natural Sciences, National University of Laos; Geophysics Research Center, Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai, Thailand.
Prince of Songkla University, Department of Physics, Hatyai, Thailand.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
2018 (English)In: Chang Mai journal of science, ISSN 0125-2526, Vol. 45, no 1, p. 576-587Article in journal (Refereed) Published
Abstract [en]

The anisotropy of magnetic susceptibility measurement technique was applied to the Jurassic-Cretaceous redbeds in the Champasak and Khammouane provinces of the southern and central part of Lao PDR, in order to define the correlation between the magnetic anisotropic data and degree of deformation in redbeds due to tectonic stress field focusing on the mountain belt and fault areas. The results show that the alignment of Kmax axes is predominantly parallel to the trending of the mountain belts (or fold axis) and the strike of faults. The orientation patterns of the principal axes of the susceptibility ellipsoid did not show the typical pattern usually found in undeformed sedimentary rocks. It can be concluded that the development of the triaxial and pencil structure patterns of secondary magnetic fabric correlates well with the degree of rock deformation which is caused by tectonic compression acting on the rocks.

Place, publisher, year, edition, pages
Chīang Mai: Mahāwitthayālai Chīang Mai , 2018. Vol. 45, no 1, p. 576-587
National Category
Geophysics
Research subject
Exploration Geophysics
Identifiers
URN: urn:nbn:se:ltu:diva-67478ISI: 000432756000053Scopus ID: 2-s2.0-85040939923OAI: oai:DiVA.org:ltu-67478DiVA, id: diva2:1179898
Note

Validerad;2018;Nivå 2;2018-02-02 (svasva)

Available from: 2018-02-02 Created: 2018-02-02 Last updated: 2018-06-08Bibliographically approved

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CiteExportLink to record
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