Table 4. Representative Spectral Parameters of Undisturbed, Clean Surfaces of Endurance Crater Stratigraphic Units in the Karatepe Ingress Sectiona Unit R*750 Red/Blue 482 to 535 nm Slope (x10-4) 535 nm Inflection (x10-2) 535 to 601 nm Slope (x10-3) 601 nm Curvature (x10-2) 904 nm Relative Band Depth (x10-3) 754 to 1009 nm Slope (x10-5) A 0.333 +/- 0.009 7.72 +/- 0.33 9.64 +/- 0.59 4.13 +/- 0.36 1.85 +/- 0.084 -2.55 +/- 0.56 -4.30 +/- 4.9 -2.90 +/- 2.6 B 0.235 +/- 0.019 6.47 +/- 0.41 6.52 +/- 0.81 2.86 +/- 0.39 1.23 +/- 0.12 -1.66 +/- 0.46 1.89 +/- 4.1 -6.70 +/- 2.6 C 0.251 +/- 0.015 7.09 +/- 0.38 6.89 +/- 0.75 3.08 +/- 0.38 1.28 +/- 0.12 -1.60 +/- 0.45 0.671 +/- 3.9 -4.20 +/- 2.5 D 0.304 +/- 0.014 8.32 +/- 0.34 7.85 +/- 0.55 3.85 +/- 0.29 1.52 +/- 0.087 -1.66 +/- 0.43 -3.9 +/- 4.3 1.10 +/- 2.8 E1 0.171 +/- 0.022 6.20 +/- 0.61 4.88 +/- 1.0 2.12 +/- 0.41 0.906 +/- 0.13 -1.16 +/- 0.44 1.36 +/- 4.2 -3.70 +/- 3.2 E2 0.288 +/- 0.012 7.77 +/- 0.38 8.40 +/- 0.73 3.42 +/- 0.33 1.50 +/- 0.091 -1.95 +/- 0.46 -4.12 +/- 4.7 -4.20 +/- 2.8 F 0.267 +/- 0.013 7.72 +/- 0.40 7.55 +/- 0.68 3.36 +/- 0.34 1.37 +/- 0.086 -1.57 +/- 0.41 -2.36 +/- 3.8 -3.60 +/- 2.4 G 0.282 +/- 0.010 6.92 +/- 0.31 8.16 +/- 0.42 3.35 +/- 0.31 1.48 +/- 0.08 -1.95 +/- 0.38 -2.69 +/- 5.7 -8.20 +/- 3.4 aValues are average values from within individual scenes accompanied by standard deviation of the mean.