Table T5. XRD mineralogy by unit.
| Mineral | Maximum | Minimum | Average | Standard deviation |
|---|---|---|---|---|
| Unit I | ||||
| Clay | 61.7 | 39.0 | 51.3 | 5.6 |
| Quartz | 25.7 | 17.2 | 20.7 | 2.0 |
| Plagioclase | 25.0 | 13.3 | 18.8 | 2.9 |
| Calcite | 25.9 | 0.0 | 9.2 | 8.1 |
| Subunit IIA | ||||
| Clay | 66.2 | 48.3 | 58.4 | 4.7 |
| Quartz | 23.9 | 16.9 | 21.4 | 2.1 |
| Plagioclase | 23.7 | 16.7 | 19.4 | 2.1 |
| Calcite | 5.3 | 0.0 | 0.8 | 1.7 |
| Subunit IIB | ||||
| Clay | 64.0 | 28.4 | 24.2 | 5.9 |
| Quartz | 47.5 | 17.6 | 16.8 | 0.0 |
| Plagioclase | 57.8 | 21.5 | 19.7 | 1.1 |
| Calcite | 3.7 | 2.3 | 2.2 | 2.1 |
| Unit III | ||||
| Clay | 65.4 | 52.9 | 59.8 | 3.4 |
| Quartz | 20.8 | 18.2 | 19.6 | 0.7 |
| Plagioclase | 21.9 | 14.7 | 17.9 | 1.8 |
| Calcite | 8.9 | 0.0 | 2.7 | 2.9 |
| Unit IV | ||||
| Clay | 55.2 | 25.0 | 49.3 | 5.5 |
| Quartz | 24.2 | 16.4 | 21.4 | 1.7 |
| Plagioclase | 35.4 | 18.9 | 26.1 | 3.9 |
| Calcite | 39.0 | 0.0 | 3.1 | 6.6 |
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