Open Access
Table 1
Synthetic geological log of the Lorraine coalfield.
Log synthétique du bassin houiller lorrain.
| Period | Epoch | Date [Ma] | Geology | Range thickness |
|---|---|---|---|---|
| Upper Triassic | Keuper & Lettenkohle | -235 to −201 | Clay, Sand | – |
| Middle Triassic | Muschelkalk | -247 to −235 | Marl, Limestone, Anhydrite, Clay | – |
| Lower Triassic | Bundsandstein | -252 to −247 | Vosges sandstones | – |
| Carboniferous | Permian | -299 to −252 | Conglomerates, Sandstone | from 10 to 550 m |
| Carboniferous | Stephanian | -304 to −299 | Sandstone, Siltite, Coal, Conglomerate, shale | up to 1100 m |
| Carboniferous | Westphalian | -323 to −299 | Sandstone, Siltite, Coal, Conglomerate, shale | up to 4000 m |
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