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Structural Mapping of Folded Sedimentary Environments from Satellite Images: an Example from Central AsiaIn the Tadjik Depression, in Soviet Central Asia, in the absence of existing geologic or topographic maps, an enhanced LANDSAT multispectral scanner image was used in combination with field data to produce a 1:250000 geologic map of the Vakhsh fold-and-thrust belt and adjacent autochthon. Several structural conclusions are reached as a result of this mapping. Deformation of the Cretaceous and Tertiary strata of the fold-and-thrust belt is, in the central Tadjik Depression, conspicuously absent north of a buried basement fault that marks the hinge-zone of the Late Mesozoic passive margin. But, in the eastern half of the depression, thrusting has moved coherent sheets northward, over the block fault, these sheets now lie flat atop the autochthon to the north. The crustal structure inherited from the Mesozoic extensional phase has strongly influenced the Late Cenozoic pattern of deformation, producing the fold-and-thrust belt that is markedly asymmetric. The development of the thrust system has included the progressive overlapping of thrust: the later thrusts apparently formed internal to the older thrusts, and subsequently overrode them.
Document ID
19860001140
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leith, W.
(Lamont-Doherty Geological Observatory Palisades, NY, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: JPL Rept. of the Workshop on Geol. Appl. of Remote Sensing to the Study of Sedimentary Basins
Subject Category
Geophysics
Accession Number
86N10607
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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