Scientific Investigations Report 2007–5009
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5009
Table 2. Soft-conditioning probabilities assigned to hydrofacies for non-U.S. Geological Survey well log descriptions, San Joaquin local study area, California.
[non-USGS, non-U.S. Geological Survey]
| Description in non- USGS well log |
Probability of hydrofacies occurrence | |||
|---|---|---|---|---|
| Clay | Silt | Silty sand | Sand | |
| Clay | 0.75 | 0.25 | 0 | 0 |
| Clayey sand | 0 | 0 | 1 | 0 |
| Clayey shale | 0.5 | 0.5 | 0 | 0 |
| Gravelly sand | 0 | 0 | 0 | 1 |
| Hard pan | 0.5 | 0.5 | 0 | 0 |
| Rock | 0.5 | 0.5 | 0 | 0 |
| Sand | 0 | 0 | 0.25 | 0.75 |
| Sandy clay | 0.5 | 0.5 | 0 | 0 |
| Sandy clayey shale | 0.5 | 0.5 | 0 | 0 |
| Sandy gravel | 0 | 0 | 0 | 1 |
| Sandy shale | 0.5 | 0.5 | 0 | 0 |
| Sandy silt | 0 | 1 | 0 | 0 |
| Sandy topsoil | 0 | 0.4 | 0.4 | 0.2 |
| Shale | 0.5 | 0.5 | 0 | 0 |
| Silty clay | 0.6 | 0.4 | 0 | 0 |
| Silty sand | 0 | 0 | 1 | 0 |
| Topsoil | 0.3 | 0.3 | 0.3 | 0.1 |
| Unknown | 0.25 | 0.25 | 0.25 | 0.25 |
U.S.
Department of the Interior | U.S. Geological
Survey
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