Figure F56. A. The downhole distribution of secondary minerals in Hole 1141A as determined from visual examination of macroscopic samples of drill core. Alteration: sl = slight, m = moderate, h = high, c = complete. Colors: Gn = green, G = gray, Pk = pink, Bn = brown, R = red. SiO = quartz and amorphous silica. B. The downhole distribution of secondary minerals in Hole 1142A as determined from visual examination of macroscopic samples of drill core. Alteration: sl = slight, m = moderate, h = high, c = complete. Colors: Gn = green, G = gray, Pk = pink, Bn = brown, R = red. SiO = quartz and amorphous silica.