Charlevoix impact structure
| Charlevoix impact structure | |
|---|---|
| Charlevoix crater | |
Stony meteorite | |
| Location | |
| Coordinates | 47°32′N 70°18′W / 47.533°N 70.300°W |
| Country | Canada |
| State | Quebec |
| Municipality | Charlevoix |
  Location of the impact structure in Canada  Charlevoix impact structure (Quebec) | |
The Charlevoix impact structure is a large eroded
Saint Lawrence River
.
Description
The original impact structure is estimated to have been 54 kilometres (34 mi) in
Mont des Éboulements, situated in the exact centre of the impact structure, is interpreted as the central uplift, a consequence of elastic rebound.[3] The impact structure is classified as a multi-ringed basin
with a central uplift.
The impact origin of Charlevoix impact structure was first realized in 1965 after the discovery of many shatter cones in the area. Other evidence for impact includes planar deformation features (PDFs) in quartz and feldspar grains.
In contrast to the surrounding craggy Laurentian Mountains, the impact structure is relatively smooth and flat, which has facilitated human settlement. Today, 90% of the people of Charlevoix live within this impact structure.[3]
References
- ^ a b Schmieder, M., Shaulis, B.J., Lapen, T.J., Buchner, E. and Kring, D.A., 2019. In situ U–Pb analysis of shocked zircon from the Charlevoix impact structure, Québec, Canada. Meteoritics & Planetary Science. 54(8) pp. 1808-1827.
- ^ "Charlevoix". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2017-10-09.
- ^ a b Interpretation Centre, Parc national des Grands-Jardins, Charlevoix
External links
- Earth Impact Database
- Satellite image of the region (from Google Maps)
- Aerial Exploration of the Charlevoix Structure
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