Sounding the Sudbury Depths

A definitive answer to the creation of the Sudbury Structure may be forthcoming this spring or summer. Lithoprobe, the seismic reflection survey that is conducting crustal seismic probes across the country, surveyed a 100-km stretch in the Sudbury area last fall.

According to Wilf Meyer, resident geologist for the Sudbury district of the Ontario Ministry of Northern Development and Mines, the survey “should reveal the elusive 3-dimensional picture of the crater fill below surface, and also of the broken rock below the crater.”

A central uplift, like that of craters on the moon, would strongly suggest a meteorite strike had caused the Sudbury Structure, Meyer was quoted as saying in a ministry publication. Beyond the purely scientific implications of the Lithoprobe survey results, a central uplift might become a prime target for exploration drilling.

The federal and provincial governments, Inco, Falconbridge and universities funded the C$400,000-to-$500,000 Sudbury Lithoprobe project.

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