Blackfoot diatreme

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The Blackfoot diatreme is a diatreme in southeastern British Columbia, Canada, located 60 km (37 mi) northeast of Cranbrook. It is 1,000 m (3,281 ft)} in length with a maximum width of 400 m (1,312 ft). The diatreme is elongate in shape, and outcrops east of Blackfoot Creek.[1]

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