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Himalayan Geology, Vol. 31
(1), 2010, pp. 1-5, Printed in India
Statistical modelling of a fold system, southeast of Zagros (Iran)
DAVOD POREH
Tu Freiberg, Freibereg, Saxony-09599, Germany
Abstract: Remote sensing is a significant tool to process the
geological structures located in zones of sparse vegetation and good
exposures. In this paper statistical analysis of remote sensing data is used
to model the process of folding in the SE of Zagros. The Zagros fold belt
comprises a gently folded cover sequence which has been detached from the
underlying basement along the Hurmoz evaporates and is locally disrupted by
recent faults. Mosaic of 14 Landsat ETM+ scenes were used to cover this
region. We digitized 515 hinge lines of synclines and anticlines and
measured their lengths. It was shown that the fold length distribution is
fractal. The fractal analysis has two implications. (i) it allows the
quantification of complexity of geological surface deformation arising from
growth, interaction and connection of folds to form networks, and (ii) it
permits to model the development of folds. It is proposed that the fold
hinge lines are an Iterated Function System (IFS). Such a model allows us to
understand the structural evolution of a compressional range in 4
dimensions, the fourth dimension being time.
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