Thursday, September 15, 2016

Photomicrograph- Ooid Growth Over A Foraminifera Nucleus

This week's microscopic view is from the Mississippian limestones exposed in the southern Appalachian mountains of Alabama.

Ooid cortices made up of tiny radial crystals of calcite growing around a foraminifera nucleus.

I will be putting up a longer post on ooids and oolite facies as important contributors of carbonate sand through geologic time and their significance as indicators of sea water chemistry and ecologic disruptions.

Stay tuned.


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