Table T6. XRD mineralogy by unit. (See table note.)
| Mineral | Maximum | Minimum | Average | Standard deviation |
|---|---|---|---|---|
| Unit I | ||||
| Clay | 53.3 | 32.5 | 41.1 | 5.7 |
| Quartz | 32.3 | 5.8 | 25.2 | 6.4 |
| Plagioclase | 41.2 | 20.0 | 32.3 | 5.5 |
| Calcite | 5.5 | 0.0 | 1.4 | 2.1 |
| Calcite | 5.5 | 0.6 | 3.1 | 2.1 |
| Subunit IIA | ||||
| Clay | 52.7 | 26.7 | 38.1 | 8.2 |
| Quartz | 27.3 | 22.4 | 25.3 | 1.7 |
| Plagioclase | 46.7 | 23.5 | 36.5 | 7.4 |
| Calcite | 0.3 | 0.0 | 0.0 | 0.1 |
| Calcite | 0.3 | 0.1 | 0.3 | 0.3 |
| Subunit IIB | ||||
| Clay | 50.9 | 27.6 | 38.7 | 8.3 |
| Quartz | 32.1 | 17.7 | 26.1 | 4.2 |
| Plagioclase | 45.8 | 22.6 | 35.2 | 7.2 |
| Calcite | 0.1 | 0.0 | 0.0 | 0.0 |
| Calcite | 0.1 | 0.1 | 0.1 | 0.0 |
Note: For each subunit, calcite results are first presented for all samples and then for only those samples containing calcite.
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