|
Sample
depth (ft) |
Clay/silt
(%) |
Glauconite
(%)* |
Fine
quartz (%) |
Medium/coarser
quartz sand (%) |
Sphaerosiderite
(%)* |
Mica
(%)* |
Other
(%)* |
|---|---|---|---|---|---|---|---|
| 3.0 | 79.43 | 0 | 13 | 8 | 0 | 0 | 0 |
| 7.5 | 76.79 | 0 | 9 | 14 | 0 | 0 | 0 |
| 15.0 | 5.15 | 0 | 9 | 86 | 0 | 0 | 0 |
| 18.0 | 14.69 | 0 | 13 | 73 | 0 | 0 | 0 |
| 28.0 | 85.28 | 0 | 15 | 0 | 0 | 0 | 0 |
| 33.0 | 82.00 | 0 | 17 | 0 | 0 | 1 | 0 |
| 38.0 | 27.66 | 3 | 58 | 7 | 0 | 4 | 0 |
| 42.4 | 39.56 | 0 | 55 | 6 | 0 | 0 | 0 |
| 51.0 | 44.54 | 3 | 48 | 0 | 0 | 4 | 0 |
| 58.0 | 43.95 | 3 | 49 | 0 | 0 | 4 | 0 |
| 63.0 | 50.78 | 5 | 28 | 0 | 0 | 16 | 0 |
| 66.7 | 57.38 | 2 | 31 | 0 | 0 | 9 | 0 |
| 73.0 | 65.73 | 2 | 28 | 0 | 0 | 5 | 0 |
| 83.0 | 83.21 | 1 | 13 | 0 | 0 | 3 | 0 |
| 86.0 | 84.60 | 0 | 11 | 0 | 0 | 4 | 0 |
| 93.0 | 87.35 | 0 | 6 | 0 | 0 | 7 | 0 |
| 98.0 | 96.32 | 0 | 2 | 0 | 0 | 2 | 0 |
| 104.0 | 45.34 | 39 | 13 | 2 | 0 | 0 | 0 |
| 108.0 | 48.06 | 17 | 16 | 19 | 0 | 0 | 0 |
| 113.0 | 39.83 | 41 | 4 | 15 | 0 | 0 | 0 |
| 118.0 | 60.49 | 10 | 17 | 3 | 0 | 9 | 0 |
| 123.0 | 36.17 | 19 | 36 | 2 | 0 | 6 | 0 |
| 132.5 | 33.01 | 0 | 13 | 54 | 0 | 0 | 0 |
| 138.0 | 6.03 | 0 | 11 | 83 | 0 | 0 | 0 |
| 142.7 | 7.02 | 0 | 76 | 17 | 0 | 0 | 0 |
| 153.0 | 84.14 | 0 | 15 | 0 | 1 | 0 | 0 |
| 164.0 | 85.02 | 0 | 14 | 0 | 0 | 0 | 0 |
| 173.0 | 96.59 | 0 | 2 | 0 | 2 | 0 | 0 |
| 183.0 | 86.82 | 0 | 2 | 0 | 11 | 0 | 0 |
| 193.0 | 95.22 | 0 | 0 | 0 | 5 | 0 | 0 |
| 203.0 | 67.34 | 0 | 11 | 19 | 3 | 0 | 0 |
| 213.0 | 87.76 | 0 | 2 | 0 | 11 | 0 | 0 |
| 223.0 | 84.22 | 0 | 0 | 0 | 15 | 0 | 0 |
| 233.0 | 79.12 | 0 | 2 | 0 | 19 | 0 | 0 |
| 243.0 | 86.47 | 0 | 13 | 0 | 0 | 0 | 0 |
| 253.0 | 94.92 | 0 | 4 | 0 | 1 | 0 | 0 |
| 263.0 | 97.65 | 0 | 0 | 0 | 2 | 0 | 0 |
| 273.0 | 99.63 | 0 | 0 | 0 | 0 | 0 | 0 |
| 283.0 | 59.81 | 0 | 40 | 0 | 0 | 0 | 0 |
| 293.0 | 10.58 | 0 | 80 | 3 | 2 | 4 | 0 |
| 303.0 | 9.41 | 0 | 43 | 44 | 0 | 0 | 3 |
| 311.0 | 76.68 | 0 | 19 | 3 | 0 | 1 | 0 |
| 318.0 | 58.06 | 0 | 37 | 0 | 0 | 5 | 0 |
| 323.0 | 23.90 | 0 | 62 | 1 | 1 | 12 | 1 |
| 328.0 | 7.14 | 0 | 76 | 1 | 0 | 14 | 2 |
| 333.0 | 8.11 | 0 | 31 | 59 | 0 | 1 | 1 |
| 343.0 | 88.56 | 0 | 8 | 0 | 2 | 1 | 0 |
| 353.0 | 6.42 | 0 | 81 | 12 | 0 | 0 | 1 |
| 363.0 | 14.40 | 0 | 19 | 49 | 17 | 0 | 0 |
| 368.0 | 86.89 | 0 | 10 | 0 | 2 | 1 | 0 |
| 373.0 | 95.74 | 0 | 4 | 0 | 0 | 0 | 0 |
| 383.0 | 90.68 | 0 | 6 | 0 | 3 | 0 | 0 |
| 393.0 | 65.08 | 0 | 20 | 0 | 13 | 1 | 0 |
| 403.0 | 97.97 | 0 | 0 | 0 | 2 | 0 | 0 |
| 413.0 | 90.95 | 0 | 1 | 0 | 8 | 0 | 0 |
| 423.0 | 60.03 | 0 | 37 | 1 | 0 | 2 | 0 |
| 433.0 | 62.45 | 0 | 29 | 3 | 0 | 2 | 4 |
| 443.0 | 67.46 | 0 | 23 | 0 | 10 | 0 | 0 |
| 453.0 | 70.76 | 0 | 28 | 0 | 0 | 1 | 0 |
| 463.0 | 27.14 | 0 | 63 | 1 | 0 | 0 | 10 |
| 473.0 | 53.01 | 0 | 43 | 0 | 2 | 0 | 2 |
| 483.0 | 62.16 | 0 | 35 | 1 | 0 | 1 | 1 |
| 493.0 | 81.07 | 0 | 18 | 0 | 0 | 0 | 0 |
| 503.0 | 90.25 | 0 | 5 | 0 | 0 | 0 | 5 |
| 508.0 | 63.90 | 0 | 32 | 3 | 0 | 0 | 1 |
| 533.0 | 99.53 | 0 | 0 | 0 | 0 | 0 | 0 |
| 543.0 | 79.45 | 0 | 6 | 0 | 14 | 1 | 0 |
| 553.0 | 40.05 | 0 | 54 | 0 | 0 | 6 | 0 |
| 558.0 | 85.28 | 0 | 13 | 0 | 0 | 1 | 0 |
| 573.0 | 8.60 | 0 | 49 | 42 | 0 | 0 | 0 |
| 582.0 | 51.98 | 0 | 48 | 0 | 0 | 0 | 0 |
| 593.0 | 16.58 | 0 | 68 | 15 | 0 | 0 | 0 |
| 605.0 | 65.80 | 0 | 27 | 0 | 5 | 1 | 0 |
| 613.0 | 87.52 | 0 | 5 | 0 | 8 | 0 | 0 |
| 623.0 | 91.74 | 0 | 8 | 0 | 0 | 0 | 0 |
| 633.0 | 60.11 | 0 | 36 | 0 | 0 | 4 | 0 |
| 643.0 | 30.95 | 0 | 39 | 22 | 0 | 2 | 6 |
| 652.0 | 73.07 | 0 | 26 | 0 | 0 | 1 | 0 |
| 663.0 | 88.98 | 0 | 6 | 1 | 4 | 0 | 0 |
| 673.0 | 84.59 | 0 | 3 | 0 | 12 | 0 | 0 |
| 683.0 | 83.65 | 0 | 3 | 0 | 14 | 0 | 0 |
| 694.5 | 99.84 | 0 | 0 | 0 | 0 | 0 | 0 |
| 703.0 | 92.43 | 0 | 3 | 0 | 4 | 0 | 0 |
| 712.5 | 74.07 | 0 | 12 | 1 | 13 | 0 | 0 |
| 722.2 | 45.20 | 0 | 44 | 8 | 3 | 0 | 0 |
| 733.0 | 44.58 | 0 | 23 | 16 | 17 | 0 | 0 |
| 743.0 | 85.93 | 0 | 9 | 3 | 2 | 0 | 0 |
| 751.0 | 49.66 | 0 | 33 | 8 | 9 | 0 | 0 |
| 763.0 | 97.88 | 0 | 0 | 0 | 2 | 0 | 0 |
| 772.0 | 33.08 | 0 | 42 | 21 | 3 | 0 | 0 |
| 783.0 | 77.67 | 0 | 0 | 0 | 22 | 0 | 0 |
| 792.0 | 44.94 | 0 | 36 | 15 | 4 | 0 | 0 |
| 805.5 | 67.15 | 0 | 9 | 7 | 0 | 0 | 16 |
| 813.0 | 25.94 | 0 | 31 | 43 | 0 | 0 | 0 |
Notes: * = The percent silt and clay in each sample was quantitatively measured by weighing each sample before and after washing off the clay and silt. The weight of the remaining sand was compared to the weight of the original sample to calculate percent silt and clay. All other percentages were arrived at qualitatively by visually estimating the proportion of each constituent in the sand fraction.