An igneous rock for Dr. Pollock

Micah Risacher and Andrew Retzler exploring a stock of nordmarkite in the Gevanim Valley, Makhtesh Ramon, southern Israel. It is somewhat rudely intruded into the Gevanim and Saharonim Formations we're studying. How do we know it's nordmarkite? We're just that good.

About Mark Wilson

Mark Wilson is a Professor of Geology at The College of Wooster. He specializes in invertebrate paleontology, carbonate sedimentology, and stratigraphy. He also is an expert on pseudoscience, especially creationism.
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1 Response to An igneous rock for Dr. Pollock

  1. Meagen says:

    Don’t be so modest! Even if there were no sign, I’m sure all of that perthite would have given it away.

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