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Table 3 Thicknesses of lithostratigraphic units of the Latest Triassic and Early Jurassic in SW Germany

From: Evidence for synsedimentary differential tectonic movements in a low-subsidence setting: Early Jurassic in northwestern Switzerland

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. 1.8–8.0 3.6–16.0 0.5–2.0 0.9–4.0 2 Variabilis–Aalensis 178.2–174.2 4
Posidonienschiefer Fm. 1.7–12.4 3.3–24.9 0.3–2.3 0.6–4.6 2 Tenuicostatum–Bifrons 183.6–178.2 5.4
Amaltheenton Fm. 1.6–10.2 3.1–20.4 0.3–2.2 0.7–4.3 2 Margaritatus–Tenuicostatum 188.3–183.6 4.7
Numismalismergel Fm. 0.7–3.0 1.4–6.0 0.3–1.1 0.5–2.2 2 Jamesoni–Davoei 191.0–188.3 2.7
Obtususton Fm. 15.0–25.0 30.0–50.0 3.9–6.4 5.9–12.8 2 Obtusum–Jamesoni 194.9–191.0 3.9
Arietenkalk Fm. 2.6–c. 6.0 3.9–9.0 0.6–1.3 0.9–1.2 1.5 Bucklandi–Obtusum 199.4–194.9 4.5
Angulatenton Fm. 0.4–2.0 0.6–3.0 0.6–2.9 0.9–4.3 1.5 Angulata 200.1–199.4 0.7
Psilonotenton Fm. 0–9.1 0–18.2 0–9.1 0–18.2 2 Planorbis–Liasicus 201.1–200.1 1
Early Jurassic 36.0–c. 65.0 / 1.3–2.4 / / Planorbis–Aalensis 201.1–174.2 27
Exter Fm. 0–8.5 0–13.6 0–1.0 0–1.6 1.6 / 209.6–201.1 (205.8–201.1) 8.5 (4.7)