Cathedral escarpment

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The Cathedral escarpment was a submarine cliff during the Cambrian period, and is often associated with the exquisite preservation of the Burgess Shale. It runs for around 100 km through and around Yoho national park, British Columbia.[1] During the Cambrian period mudflows ran down and along the escarpment, trapping and quickly burying organisms, and preventing their decay, permitting the preservation of soft tissue in the rocks that now comprise the Stephen formation.[1]


  1. ^ a b Caron, J. -B.; Gaines, R. R.; Mangano, M. G.; Streng, M.; Daley, A. C. (2010). "A new Burgess Shale-type assemblage from the "thin" Stephen Formation of the southern Canadian Rockies". Geology 38 (9): 811. doi:10.1130/G31080.1.  edit