Table 2 Thickness of lithostratigraphic units of the Latest Triassic and Early Jurassic in E France and SW Germany (today’s Upper Rhine Graben)
Formation (Fm.) | Thickness compacted [m] | Thickness decompacted [m] | Sedimentation Rate [m/Myr] compacted sediment | Sedimentation Rate [m/Myr] decompacted sediment | Decompaction Factor | Ammonite Zone | Age [Myr] | Duration [Myr] |
|---|---|---|---|---|---|---|---|---|
Jurensismergel Fm. and Opalinuston Fm. | 3.0–39.0 | 6.0–78.0 | 0.7–9.8 | 1.5–19.5 | 2 | Variabilis–Aalensis | 178.2–174.2 | 4 |
Posidonienschiefer Fm. | 3.0?–12.0 | 6.0–24.0 | 0.6–2.2 | 1.1–4.4 | 2 | Tenuicostatum–Bifrons | 183.6–178.2 | 5.4 |
Amaltheenton Fm. | 3.5–c. 30.0 | 7.0–60.0 | 0.7–6.4 | 1.5–12.8 | 2 | Margaritatus–Tenuicostatum | 188.3–183.6 | 4.7 |
Numismalismergel Fm. | c. 0.7–c. 25.0 | 1.3–50.0 | 0.2–9.3 | 0.5–18.5 | 2 | Jamesoni–Davoei | 191.0–188.3 | 2.7 |
Obtususton Fm. | 22.0–30.7 | 44.0–61.4 | 5.6–7.9 | 11.3–15.7 | 2 | Obtusum–Jamesoni | 194.9–191.0 | 3.9 |
Arietenkalk Fm. | <3.0– > 5.0 | <4.5– > 7.5 | 0.7–1.1 | 1.0–1.7 | 1.5 | Bucklandi–Obtusum | 199.4–194.9 | 4.5 |
Angulatenton Fm. | c. 0.5–2.5 | 0.8–3.8 | 0.7–3.6 | 1.1–5.4 | 1.5 | Angulata | 200.1–199.4 | 0.7 |
Psilonotenton Fm. | 0 | 0 | 0 | 0 | 2 | Planorbis–Liasicus | 201.1–200.1 | 1 |
Early Jurassic | 40.0–90.0 | / | 1.5–3.3 | / | / | Planorbis–Aalensis | 201.1–174.2 | 27 |
Exter Fm. | 2.0–10.0 | 3.2–16.0 | 0.2–1.2 | 0.4–1.9 | 1.6 | / | 209.6–201.1 (205.8–201.1) | 8.5 (4.7) |