Earth: Day Zero • Paper 181 of 512
Manicouagan Structure
The Manicouagan Structure in Quebec, Canada, represents one of the most recognizable circular geological features preserved on Earth.
Regional Geological Context
The structure is located near Baie-Comeau, Quebec, Canada, within the Canadian Shield. Regional institutions include McGill University, Montréal, Quebec, Canada, and Université Laval, Québec City, Quebec, Canada.
Observation
The structure preserves circular morphology, impact-related deformation, melt products, and large-scale geological continuity.
Constraint Analysis
Manicouagan provides a useful intermediate comparison between relatively young structures and highly modified ancient impact systems.