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Article: Meteor linked to rich ores at Sudbury. (unusual geologic structure in Ontario, Canada)
- Article from:
- Science News
- Article date:
- October 26, 1985
- Author:
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Copyright informationCOPYRIGHT 1985 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Take a nickel out of your pocket and chances are that the metal came from an unusual geologic structure in Ontario, Canada, called the Sudbury Igneous Complex. This 60-kilometer-long structure is made up of zones of different igneous (cooled from a molten state) rock types stacked like a series of elliptical-shaped bowls. Not only is it the world's largest single source of nickel, but it is also rich in copper and other elements.
In spite of a long history of mining, the geologic origin of the complex has remained in question for more than a century. Some scientists have argued that the complex formed when magma(molten rock) from the mantle moved up through the crust. ...
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