Table 3 Interface types results from a point counting of 100 grains from very coarse (1–2 mm), coarse (1–0.5 mm) and medium (0.5–0.25 mm) grain size fractions from Panarea and Salina sand samples (PN = Panarea Island; SA = Salina Island; Vc = very coarse, C = coarse, m = medium)
From: The use of mineral interfaces in sand-sized volcanic rock fragments to infer mechanical durability
Interface type | PN-1-Vc | PN-1-C | PN-1-m | SA-1-Vc | SA-1-C | SA-1-m | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
N. | % | N. | % | N. | % | N. | % | N. | % | N. | % | |
Op/Glgr | 572 | 14.99 | 294 | 9.67 | 171 | 13.56 | 285 | 4.80 | 232 | 5.46 | 130 | 4.78 |
Pl/Glgr | 1151 | 30.15 | 790 | 26.00 | 400 | 31.72 | 2347 | 39.51 | 1613 | 37.98 | 929 | 34.18 |
Px/Glgr | 122 | 3.20 | 102 | 3.36 | 76 | 6.03 | 661 | 11.13 | 692 | 16.29 | 328 | 12.07 |
Ol/Glgr | 37 | 0.97 | 21 | 0.69 | 18 | 1.43 | 118 | 1.99 | 93 | 2.19 | 73 | 2.69 |
Hbl/Glgr | 377 | 9.88 | 333 | 10.96 | 130 | 10.31 | 68 | 1.14 | 4 | 0.09 | 26 | 0.96 |
Idd/Glgr | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 20 | 0.34 | 0 | 0.00 | 0 | 0.00 |
Bt/Glgr | 141 | 3.69 | 31 | 1.02 | 18 | 1.43 | 2 | 0.03 | 5 | 0.12 | 10 | 0.37 |
Rt/Glgr | 5 | 0.13 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Pl/Migr | 159 | 4.17 | 289 | 9.51 | 4 | 0.32 | 623 | 10.49 | 369 | 8.69 | 250 | 9.20 |
Px/Migr | 49 | 1.28 | 11 | 0.36 | 1 | 0.08 | 154 | 2.59 | 219 | 5.16 | 105 | 3.86 |
Op/Migr | 75 | 1.96 | 117 | 3.85 | 3 | 0.24 | 132 | 2.22 | 246 | 5.79 | 126 | 4.64 |
Ol/Migr | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 27 | 0.45 | 0 | 0.00 | 0 | 0.00 |
Hbl/Migr | 6 | 0.16 | 69 | 2.27 | 6 | 0.48 | 0 | 0.00 | 0.00 | 0.00 | 0 | 0.00 |
Rt/Migr | 5 | 0.13 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Bt/Migr | 0 | 0.00 | 7 | 0.23 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 5 | 0.18 |
Op/Ol | 0 | 0.00 | 16 | 0.53 | 0 | 0.00 | 2 | 0.03 | 0 | 0.00 | 26 | 0.96 |
Px/Ol | 10 | 0.26 | 1 | 0.03 | 3 | 0.24 | 83 | 1.40 | 13 | 0.31 | 2 | 0.07 |
Pl/Ol | 15 | 0.39 | 82 | 2.70 | 3 | 0.24 | 30 | 0.50 | 10 | 0.24 | 18 | 0.66 |
Pl/Op | 237 | 6.21 | 0 | 0.00 | 31 | 2.46 | 155 | 2.61 | 147 | 3.46 | 189 | 6.95 |
Px/Op | 34 | 0.89 | 40 | 1.32 | 67 | 5.31 | 249 | 4.19 | 112 | 2.64 | 104 | 3.83 |
Pl/Px | 30 | 0.79 | 4 | 0.13 | 15 | 1.19 | 234 | 3.94 | 148 | 3.48 | 89 | 3.27 |
Ol/Idd | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 11 | 0.19 | 12 | 0.28 | 0 | 0.00 |
Hbl/Pl | 135 | 3.54 | 225 | 7.40 | 57 | 4.52 | 16 | 0.27 | 0 | 0.00 | 8 | 0.29 |
Hbl/Px | 2 | 0.05 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Bt/Pl | 36 | 0.94 | 19 | 0.63 | 6 | 0.48 | 2 | 0.03 | 0 | 0.00 | 0 | 0.00 |
Bt/Px | 2 | 0.05 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 5 | 0.18 |
Bt/Op | 145 | 3.80 | 12 | 0.39 | 22 | 1.74 | 0 | 0.00 | 1 | 0.02 | 8 | 0.29 |
Hbl/Op | 184 | 4.82 | 347 | 11.42 | 167 | 13.24 | 0 | 0.00 | 0 | 0.00 | 35 | 1.29 |
Idd/Px | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Idd/Pl | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Ol/Bt | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Ol/Hbl | 0 | 0.00 | 10 | 0.33 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Bt/Hbl | 21 | 0.55 | 23 | 0.76 | 3 | 0.24 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
Pl/Pl | 200 | 5.24 | 143 | 4.71 | 41 | 3.25 | 580 | 9.76 | 202 | 4.76 | 184 | 6.77 |
Px/Px | 29 | 0.76 | 22 | 0.72 | 8 | 0.63 | 121 | 2.04 | 106 | 2.50 | 65 | 2.39 |
Ol/Ol | 8 | 0.21 | 0 | 0.00 | 2 | 0.16 | 9 | 0.15 | 11 | 0.26 | 1 | 0.04 |
Op/Op | 8 | 0.21 | 7 | 0.23 | 3 | 0.24 | 0 | 0.00 | 12 | 0.28 | 2 | 0.07 |
Hbl/Hbl | 19 | 0.50 | 24 | 0.79 | 6 | 0.48 | 12 | 0.20 | 0 | 0.00 | 0 | 0.00 |
Bt/Bt | 3 | 0.08 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 |
TOT | 3817 | 100 | 3039 | 100 | 1261 | 100 | 5941 | 100 | 4247 | 100 | 2718 | 100 |