The Elwin Bay diatreme, also called the Elwin Bay kimberlite, is a small post-Silurian kimberlite diatreme located approximately 1 km (0.62 mi) south of Elwin Bay at the eastern margin of Somerset Island, Nunavut, Canada. It has a diameter of 200 m (656 ft).[1]
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73°30′N 090°56′W / 73.500°N 90.933°W
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