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Science 6 September 1968:
Vol. 161. no. 3845, pp. 1002 - 1005
DOI: 10.1126/science.161.3845.1002
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Articles

Precambrian Rift: Genesis of Strata-Bound Ore Deposits

E. R. Kanasewich 1

1 Division of Geophysics, Department of Physics, University of Alberta, Edmonton

Study of deep seismic reflections has detected a Precambrian rift valley below flat-lying sediments in southern Alberta. The anomalous magnetic and gravity trends show that the rift is continuous across Alberta and British Columbia (through the Kimberley lead-zinc field) and possibly the Coeur d'Alene mining district of Idaho. There is evidence that these ore bodies were deposited in a Precambrian rift under conditions similar to those prevailing in the hot-brine areas of the modern Red Sea.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Proterozoic Volcanogenic Mineralization Styles.
D. Rickard (1987)
Geological Society, London, Special Publications 33, 23-35
   Abstract »    PDF »
Least-squares inversion of spatial seismic refraction data.
E. R. KANASEWICH and S. K. L. CHIU (1985)
Bulletin of the Seismological Society of America 75, 865-880
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)