The Velodrome is a large recumbent fold spilled southward, formed at the end of the Tertiary (23 to 5 million years) at the Alpine front. It consists of sedimentary series composed mainly of sand, sandstone and conglomerate produced by erosion of the Alps.
Manicouagan Impact Structure in Quebec, Canada. Lake Manicouagan and Lake Mushalagan surround the central uplift of the crater. The original diameter of the crater was 62 miles (100 kilometers), and the age has been dated at 214 million years. Shattercones (striated features found in rocks deformed by the passage of shock waves), along with shattered and brecciated rocks found in the central uplift, confirm the crater’s impact origin. Several glacial advances have scoured the crater to its…
Clearwater Lakes, Canada. This one is a double doozy of meteor impacts. A pair of asteroids hit Quebec approximately 290 million years ago on the eastern shore of Hudson Bay. The impact created the Clearwater Lakes. The larger lake is 20 miles in diameter, while the smaller one is 13.7 miles in diameter.
The "Ahnighito" fragment fell to Earth nearly 10,000 years ago. The iron masses were known to Inuit as Ahnighito (the Tent), weighing 31 metric tons (31 long tons; 34 short tons); the Woman, weighing 3 metric tons (3.0 long tons; 3.3 short tons); and the Dog, weighing 400 kilograms (880 lb). For centuries, Inuit living near the meteorites used them as a source of metal for tools and harpoons. The Inuit would work the metal using cold forging--that is by stamping and hammering it.