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Name: Saba
Status: student
Grade: n/a
Country: n/a
Date: Summer 2013

What is the real difference between green, red, or gray marls in sedimentary basin?

Hi Saba,

Thanks for the question. The main component of marl is calcium carbonate (chalk or CaCO3). The colors can be expected to arise due to the types of clays and minerals present.

I hope this helps. Thanks Jeff Grell

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