Comments on Gigapan: Snowball Earth Educational Rock Sample Suite PFH-4

Banded iron formation with ice-rafted debris. This deep ocean stratigraphic equivalent of Ghaub diamictites indicates highly anoxic oceanic chemistry. The grey is hematite, the red is jasper, and the buff is siderite. The sample is from the Mackenzie Mountains in northwest Canada. Banded iron deposition requires tha...

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    0.10 Gigapixels

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    April 26, 2012

    Date Taken

    April 26, 2012

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    m.a.g.i.c., macro, geology, snowball earth, bif, and 3 more

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