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PetrographypediA is the portal of petrography. It provides an interactive atlas of thin-section photomicrograph analyses. It helps the process of petrographic description and analysis.

Highlighted Photomicrographs

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Tips for Using PetrographypediA

• Searching a petrographic term: use the text field located in the upper right corner of this page. For example, search Quartz.

• Example of Photomicrographic Description: Photomicrograph 00001097

• Visualizing a category: Detrital quartz

Constituent Sets

• Primary Constituent
• Diagenetic Constituent
• Porosity