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Comments on Gigapan: Snowball Earth Educational Rock Sample Suite P101A

  2. Sample P101A, from the Ravensthroat Formation in northwest Canada, is a laminated peloidal cap dolostone. The graded and reverse-graded peloids exhibit low-angle cross laminations easily visible to the naked eye. Peloid deposition reflects conditions in which calcium carbonate precipitation is occuring rapidly and has ...

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