Re ectance , dielectric constant and chemical content of selected sedimentary rocks

Abstract. Relationships among average spectral re ectance measured in the visible and near infrared (VNIR) region (0.4–2.5mm), dielectric constantmeasured in the microwave region (0.5–18GHz) and chemical content of 34 sedimentary rock samples were measured. The natural logarithm of the average spectral re ectance and that of the imaginary part of the dielectric constantwere negatively correlated (r=­ 0.60). The average spectral re ectance correlated negatively with 23 (r=­ 0.61), 23 (r=­ 0.63), 2 (r=­ 0.60), 2 (r=­ 0.64), and 25 (r=­ 0.60). The average imaginary part of the dielectric constant correlated positively with 23 (r=0.76), 2 (r=0.62), and 2 (r=0.70). The average real part of the dielectric constant is highly correlated with the weight loss of the rocks due to burning (burnt loss) (r=0.92), 2 (r=­ 0.96), and CaO (r=0.91).