Haughton_impact_crater--Eugene_Shoemaker

Haughton impact crater is located on Devon Island, Nunavut in far Northern Canada. It is about 23 km (14 mi) in diameter and was formed 31-32 million years ago during the Early Oligocene. The impacting object is estimated to have been approximately 2 km (1.2 mi) in diameter. Devon Island itself is composed of Paleozoic shale and siltstone overlying gneissic bedrock. When the crater formed, the shale and siltstone were peeled back to expose the basement; material from as deep as 1,700 m (5,600 ft) has been identified.