Figure 2
From: Origins of pressure dependent permeability in unconventional hydrocarbon reservoirs
EPMA results for Bakken shale with lenticular clay rich inclusions. The panels on either side of the elemental map show the principal component analysis (PCA) for the adjacent image section outlined with a cyan rectangle. The PCA results show that the clay rich inclusions consist of a higher weighting of the principal component with elevated Al content.
