The analytical study of rock samples, typically performed by examining thin sections under a polarized light microscope. Geologists use this technique to identify mineral assemblages, grain sizes, and structural relationships that are invisible to the naked eye. The resulting data is essential for determining a rock's origin, its burial history, and its potential to host economic mineral deposits or hydrocarbon reservoirs.
The petrography report confirms the sandstone has enough secondary porosity to be an excellent reservoir rock.
Related terms
Mineralogy
The scientific study of the chemistry, crystal structure, and physical properties of minerals.
Lithogeochemistry
The study of the chemical composition of rocks to understand their origin and locate ore deposits.
Microfacies
The microscopic characteristics of a rock that reveal its depositional environment.