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Fault seal quantitative prediction: shale smear factor, shale gouge ratio, and smear gouge ratio (view source)
Revision as of 23:02, 17 November 2014
, 23:02, 17 November 2014→Shale smear factor
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Lindsay et al.<ref name=Lindsay>Lindsay, N. G., F. C. Murphy, J. J. Walsh, and J. Watterson, 1993, Outcrop studies of shale smear on fault surfaces: International Association of Sedimentologists Special Publication 15, p. 113-123.</ref> described outcrop studies of shale smears in a Carboniferous fluvio-deltaic sequence. In contrast to the sequence described by Weber et al.,<ref name=Weber /> these rocks were lithified at the time of faulting (burial depth about 2 km). Lindsay et al.<ref name=Lindsay /> recognized three types of shale smear: shear, abrasion, and injection.
Lindsay et al.<ref name=Lindsay>Lindsay, N. G., F. C. Murphy, J. J. Walsh, and J. Watterson, 1993, Outcrop studies of shale smear on fault surfaces: International Association of Sedimentologists Special Publication 15, p. 113-123.</ref> described [http://www.merriam-webster.com/dictionary/outcrop outcrop] studies of shale smears in a Carboniferous fluvio-deltaic sequence. In contrast to the sequence described by Weber et al.,<ref name=Weber /> these rocks were lithified at the time of faulting (burial depth about 2 km). Lindsay et al.<ref name=Lindsay /> recognized three types of shale smear: shear, abrasion, and injection.
# Shear smears are analogous to those described by Weber et al.<ref name=Weber>Weber, K. J., G. Mandl, W. F. Pilaar, F. Lehner, and R. G. Precious, 1978, The role of faults in hydrocarbon migration and trapping in Nigerian growth fault structures: Offshore Technology Conference 10, paper OTC 3356, p. 2643-2653.</ref>([[:File:Shale Smear Factor Fig1.png|Figure 1]]). The thicknesses of the smears generally decrease with distance from the source bed, reaching a minimum in the region midway between the hanging-wall and footwall bed terminations.
# Shear smears are analogous to those described by Weber et al.<ref name=Weber>Weber, K. J., G. Mandl, W. F. Pilaar, F. Lehner, and R. G. Precious, 1978, The role of faults in hydrocarbon migration and trapping in Nigerian growth fault structures: Offshore Technology Conference 10, paper OTC 3356, p. 2643-2653.</ref>([[:File:Shale Smear Factor Fig1.png|Figure 1]]). The thicknesses of the smears generally decrease with distance from the source bed, reaching a minimum in the region midway between the hanging-wall and footwall bed terminations.