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Detailed Reference Information |
Wu, J., Mereu, R.F. and Percival, J.A. (1992). Seismic image of the Ivanhoe Lake Fault Zone in the Kapuskasing Uplift of the Canadian Shield. Geophysical Research Letters 19: doi: 10.1029/91GL03180. issn: 0094-8276. |
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The Kapuskasing uplift, located in the central Canadian shield, represents an oblique exposure of the Archean middle to lower crust. The Ivanhoe Lake fault zone, believed to be the basal thrust carrying the high-grade rocks of the Kapuskasing zone over the low-grade Abitibi green-stone belt, holds the key to understanding the nature and evolution of the Kapuskasing uplift. Despite numerous geological and geophysical studies, including LITHOPROBE deep seismic reflection profiles, and because of very limited bedrock exposure in the area, the shallow structure of the Ivanhoe Lake fault zone remains obscure. Here we present results obtained by reprocessing data from a LITHOPROBE seismic reflection profile across the fault zone. For the first time, the Ivanhoe Lake fault zone is clearly imaged on the seismic section as a series of west-dipping reflectors with an average dip of 20¿, which can be traced to the surface. The results support the conclusion that fault zones form good reflectors. ¿ American Geophysical Union 1992 |
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Abstract |
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Keywords
Seismology, Structure of the crust, Exploration Geophysics, Data processing, Exploration Geophysics, Seismic methods, History of Geophysics, Tectonophysics |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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