Figure F5. Spectral differences between illite-rich and smectite-rich ocean sediments. These three samples came from two different equatorial Pacific site survey cores. The first two samples, A1 and A2, came from core EW9709-21GC (25°N, 147°W), and the third sample, B, came from core EW9709-12PC (5°N, 140°W). Samples A1 and A2 contain 89% and 88% clay, respectively, and are both dominantly illite. Sample B contains 80% clay and is dominantly smectite.

Figure F5. Spectral differences between illite-rich and smectite-rich ocean sediments. These three samples came from two different equatorial Pacific site survey cores. The first two samples, A₁ and A₂, came from core EW9709-21GC (25°N, 147°W), and the third sample, B, came from core EW9709-12PC (5°N, 140°W). Samples A₁ and A₂ contain 89% and 88% clay, respectively, and are both dominantly illite. Sample B contains 80% clay and is dominantly smectite.