Régions: Dehcho Region, North Slave Region
étiquettes: physical sciences, geology, seismology, tectonic movement, lithology, continental plates
| chercheur principal: | Eaton, David (2) |
| Nᵒ de permis: | 12867 |
| Organisation: | Geological Survey of Canada |
| Année(s) de permis: |
1999
1996
|
| Délivré: | juin 10, 1996 |
| Équipe de projet: | A. Jones (GSC), Fred Cook (U.of C.), Bill Padgham (DIANA) |
Objectif(s): To investigate the structure and composition of the earth's crust to a depth of 50 km or more along two corridors north and south of Great Slave Lake, and a third extending west to Nahanni Butte. These corridors traverse several significant crust features, such as the Archean/Proterozoic Boundary and the Great Slave Lake Shear Zone. The work is an important component of the National Lithoprobe Program, which is aimed at understanding the tectonic evolution of the North American Continent.
Description du projet: Since the region of investigation (down to a depth of 50 km or more) is inaccessible, geophysical techniques will be used. One technique will be seismic reflection profiling, a method adapted from the oil industry. Large vehicles are use to generate seismic waves, which travel downwards and reflect off boundaries. These echoes are recorded by surface instruments, and the data are processed to produce an image. The electromagnetic component of the project will measure the natural variations in the earth's electrical and magnetic fields to determine the distribution of conductive material (e.g., fluids, graphite) in the earth's crust.
