Fig. 10
From: Chert outcrops differentiation by means of low-field NMR relaxometry
PCA analysis for different sets of primary variables: 1D-T2 NMR data including T2 times of peaks from distributions of dry (D1, D2, D3, D4, D5) and saturated (S1, S2, S3, S4, S5) samples, and T2 standard protocol data: T2cutoff, BVI, and FFI (a); only T2 times of peaks from 1D-T2 distributions of saturated (S1, S2, S3, S4, S5) samples (b); 2D T1-T2 maps data including T2 times of peaks from maps obtained for saturated samples (S1, S2, S3, S4, S5) and T1/T2 ratios for these peaks, as well as SiO2 and CaO content (c).
