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The effect of basement step/topography on the geometry of the Zagros fold and thrust belt (SW Iran): an analogue modeling approach
Department of Geology, University of Isfahan, Iran.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.ORCID iD: 0000-0003-1744-7004
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.
2013 (English)In: International journal of earth sciences, ISSN 1437-3254, E-ISSN 1437-3262, Vol. 102, no 8, 2117-2135 p.Article in journal (Refereed) Published
Abstract [en]

Systematic analogue models are run to study the variation in deformation across basement steps in the Zagros Fold-Thrust Belt. Our model results demonstrate that basement configuration/topography influences the sedimentation thickness and, hence, the kinematics and geometric evolution of the fold and thrust belt. The greater the difference in thickness between the adjacent cover units across a basement step, the sharper and clearer will be the offset the deformation front. Based on model results, we conclude that in a fold-thrust belt, where basement step/topography is covered by a layer of ductile salt acting as a decollement, the effect of the salt decollement on the evolution of the belt is far greater than the effect of thickness variation of the cover units.

Place, publisher, year, edition, pages
2013. Vol. 102, no 8, 2117-2135 p.
Keyword [en]
Overburden thickness, deformation front, analogue modeling, Zagros
National Category
Geology
Research subject
Earth Science with specialization in Mineral Chemistry, Petrology and Tectonics
Identifiers
URN: urn:nbn:se:uu:diva-180814DOI: 10.1007/s00531-013-0921-5ISI: 000325804900003OAI: oai:DiVA.org:uu-180814DiVA: diva2:551116
Funder
Swedish Research Council
Available from: 2012-09-10 Created: 2012-09-10 Last updated: 2017-12-07Bibliographically approved

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Publisher's full texthttp://link.springer.com/article/10.1007/s00531-013-0921-5

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Nilfouroushan, FaramarzKoyi, Hemin

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