UNGAVA-QUEBEC CRATER

formerly Chubb Crater, the largest crater on the Earth's surface that is definitely known to be of meteoritic origin. It is located in the northwestern part of the Ungava Peninsula, northern Quebec province, Canada. First studied in 1950, the crater is 2.1 miles (3.3 km) in diameter and 1,203 feet (367 m) deep, with a rim standing 333 feet (101 m) above ground level. Filled by a lake, it is surrounded by many smaller circular lakes. The surrounding strata are tilted upward toward the centre of the crater and are broken here and there by radial fissures.