A recent paper on spherulitic concretions of dahllite1 prompted the writer to examine some phosphatic concretions from the geology collection of Cornell University, which had been collected at the base of the New Providence shale (Mississippian), near Junction City, Kentucky.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.