Table S6A. Grain-size distributions of CRE samples. Sample G1 G2 G3 G4 G5 G6 Grain size (µm) Cumulative (%) Frequency (%) Cumulative (%) Frequency (%) Cumulative (%) Frequency (%) Cumulative (%) Frequency (%) Cumulative (%) Frequency (%) Cumulative (%) Frequency (%) 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.58 0.91 0.91 0.95 0.95 1.04 1.04 1.30 1.30 0.96 0.96 0.85 0.85 1.06 3.09 2.18 3.36 2.40 3.74 2.70 4.16 2.86 3.29 2.33 2.80 1.95 1.95 7.99 4.90 9.07 5.72 10.02 6.28 10.24 6.08 8.89 5.60 7.38 4.57 4.19 19.93 11.94 23.76 14.69 25.21 15.19 23.87 13.63 23.35 14.46 19.66 12.28 7.72 32.97 13.04 39.65 15.89 41.29 16.07 34.12 10.25 39.51 16.16 34.56 14.90 14.22 46.51 13.53 54.23 14.58 56.60 15.31 48.11 14.00 55.80 16.29 50.87 16.30 35.56 68.44 21.94 71.81 17.58 75.66 19.06 69.41 21.30 77.41 21.61 73.50 22.63 63 78.70 10.26 77.80 5.99 82.10 6.44 77.90 8.49 85.00 7.59 80.80 7.30 125 89.50 10.80 87.90 10.10 90.00 7.90 83.70 5.80 89.90 4.90 86.60 5.80 250 95.70 6.20 92.90 5.00 95.00 5.00 89.10 5.40 94.50 4.60 92.40 5.80 500 97.70 2.00 94.70 1.80 96.40 1.40 90.10 1.00 96.30 1.80 94.10 1.70 1000 99.50 1.80 96.90 2.20 97.80 1.40 92.00 1.90 98.50 2.20 96.70 2.60 2000 99.90 0.40 99.50 2.60 98.20 0.40 92.60 0.60 99.10 0.60 97.30 0.60 5000 100.00 0.10 99.60 0.10 99.10 0.90 96.30 3.70 99.80 0.70 98.50 1.20 10000 100.00 0.00 100.00 0.40 100.00 0.90 100.00 3.70 100.00 0.20 100.00 1.50 20000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 30000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 40000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 50000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 60000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 80000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 200000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 300000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 400000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 500000 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00 100.00 0.00