- installations that are set in place intentionally, and appear as either horizontal surfaces or as ordered aggregation, and
- deposits that can result either from either layering or buildup, or else from an amorphous amassment.
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| Material | Total | Percentage | Histogram |
|---|---|---|---|
| cl | 33 | 82% | |
| st | 7 | 18% | |
| Total | 40 | 100% |