Open Access
Table 3
Program for inferring the paleo-water depth relying on lithology, structure, and bentonic organisms (Zhang et al., 2014a, b).
| Area | Paleo-water depth (m) |
|---|---|
| Marginal area where the strata synchronous to the Guanyinqiao Layer is absent | 0 |
| Underwater highland deposited in the Paraorthograptus pacificus and Metabolograptus extraordinarius zones with the absence of the Guanyinqiao Layer and the Wufeng Formation | 5 |
| Underwater highland deposited in the Metabolograptus extraordinarius zone with the absence of the Guanyinqiao Layer and the Wufeng Formation | 10 |
| Area where the Guanyinqiao Layer containing the shallow-water Hirnantia was deposited | 10–30 |
| Area where the Guanyinqiao Layer containing the deep-water Hirnantia was deposited | 30–60 |
| Area where the black shale was continuously deposited | 60–100 |
| Area where the Tianmashan and Tianlingkou formations were deposited | 60–80 |
| Area where the Daduhe and Tiezufeike formations were deposited | 10–20 |
| Area where the Nanzheng Formation was deposited | 10–30 |
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