Fossil fault zones: significance and applications

Article in Press, Corrected Proof
Pages: 
pp. 61-71
Department of Sedimentary Basins and Petroleum, Shahid Beheshti University, 1983969411 Tehran, Iran
Abstract: 

Fossil faults are permanently inactive fault zones, preserved and recognized in the geological record of an area by major brittle, semi-brittle, or mylonitic fault rocks, showing significant width and displacement. Applications and purposes of fossil fault researches include, but are not limited to, investigation on seismic faulting, analog model of active faults, metal ore deposits, paleo-path and fluid migration, deformation mechanism and fault migration along-strike and down-dip. These categories involve subsidiary subjects, some of which are relatively new and seem to attract more attention. Fossil faults are a major source of information about past geological processes that were active at some depth in Earth’s lithosphere, and also provide an opportunity for assuming and predicting the future in structural geology. This paper reviews the researches done on fossil faults and their applications since the early 1970s, albeit not always listed as “fossil faults”.

Keywords: 

fossil faults, deformation, seismic faulting, fluid migration, ore deposits

VOLUME 47 (1)/May 2018

Faculty of Geology and Geography, Department of Mineralogy, Petrology and Economic Geology, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia

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University of Mining and Geology “St Ivan Rilski”, Department of Geology and Geoinformatics, 1 Prof. Boyan Kamenov Str., Studentski Grad, 1700 Sofia, Bulgaria
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Sofia University “St Kliment Ohridski”, Department of Geology, Palaeontology and Fossil Fuels, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria

Regional Museum of History Kardzhali, 4 Republikanska Str., 6600 Kardzhali, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Department of Sedimentary Basins and Petroleum, Shahid Beheshti University, 1983969411 Tehran, Iran

Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 24, 1113 Sofia, Bulgaria