Legend pipe

{{Short description|Diatreme in Canada}}

The Legend pipe is a diatreme associated with the Birch Mountains kimberlite field in northern Alberta, Canada. It is thought to have formed about 75 million years ago during the Late Cretaceous period.[http://www.ags.gov.ab.ca/minerals/diamonds/8IKC_Abstract.pdf Petrogenetic considerations for the Late Cretaceous northern Alberta kimberlite province] {{webarchive|url=https://web.archive.org/web/20110526054242/http://www.ags.gov.ab.ca/minerals/diamonds/8ikc_abstract.pdf |date=2011-05-26 }}[http://www.ags.gov.ab.ca/minerals/diamonds/diamonds.html Alberta Geological Survey: Kimberlites, Indicator Minerals and Diamonds] {{webarchive|url=https://web.archive.org/web/20100326152129/http://www.ags.gov.ab.ca/minerals/diamonds/diamonds.html |date=2010-03-26 }}