Figure 2. Reflectance spectra (400–700 nm) characteristic of distinctive lithologies of sediments from Leg 175. A. Clay with various amounts of diatoms, nannofossils, and authigenic minerals at Holes 1075A, 1076A, and 1077A. B. Organic-rich clay with abundant diatoms at Hole 1084A.

Figure 2. Reflectance spectra (400–700 nm) characteristic of distinctive lithologies of sediments from Leg 175. A. Clay with various amounts of diatoms, nannofossils, and authigenic minerals at Holes 1075A, 1076A, and 1077A. B. Organic-rich clay with abundant diatoms at Hole 1084A. C. Organic-rich clay with high carbonate contents at Hole 1082A. D. Carbonate-rich sediments (oozes) from Holes 1081A, 1084A, and 1085A.