Hybrid extraction of tectonic lineaments from digital elevation model

The extraction of lineaments from spaceborne data is invaluable for a regional tectonic evaluation of rocks. In this study, a hybrid approach consisting of an automated and manual lineament extraction routine was applied for lineament generation using the Mandara Mountains as a case study. The workf...

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Bibliographic Details
Published in:Applied geomatics 2022-06, Vol.14 (2), p.163-180
Main Authors: Tende, Andongma Wanduku, Mustapha, Tajuddeen, Fru, Mary Immaculate Neh, Gajere, Jiriko Nzeghi, Aminu, Mohammed Dahiru
Format: Article
Language:English
Subjects:
Analysis
Case studies
Density
Dimensions
Earth and Environmental Science
Elevation
Fractals
Geographical Information Systems/Cartography
Geography
Geophysics/Geodesy
Geospatial data
Measurement Science and Instrumentation
Mineral resources
Mountains
Original Paper
Remote Sensing/Photogrammetry
Spatial analysis
Surveying
Tectonics (Geology)
Trends
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Summary:The extraction of lineaments from spaceborne data is invaluable for a regional tectonic evaluation of rocks. In this study, a hybrid approach consisting of an automated and manual lineament extraction routine was applied for lineament generation using the Mandara Mountains as a case study. The workflow consists of filtering of a high-resolution digital elevation model, automatic extraction of lineaments, Euclidean distance analysis, binary discretisation, spatial integration and manual digitisation. Spatial and statistical techniques such as lineament orientation, lineament length distribution analysis, spatial density and fractal analysis were used in the evaluation of tectonic attributes. A total of eighty lineaments were extracted using the hybrid approach and a rose plot analysis suggests the dominance of NNE-SSW trend alongside less prominent alignment to the WNW-ESE, NE-SW and E-W. The statistically analysed lineament lengths displayed a mean length value of 9.4 km accompanied by a negatively skewed histogram pattern. The spatial density analysis of lineament trends suggests a mean lineament density of 0.68 and mean intersection density of 0.16. Fractal analysis of high lineament density zones suggests a relatively moderate to low fractal dimension value for both lineament trends and lineament intersection patterns. The lineaments within the Mandara Mountains are characterised by a poly deformational tectonic episode accompanied by relatively low fractal dimension which may advance possible reasons for its poor mineral resource potential.
ISSN:1866-9298
1866-928X
DOI:10.1007/s12518-022-00422-6