International Field Workshop on 'The Triassic of eastern France'

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supported by the occurrence of bioturbation. The interbedded aeolian sand sheets, sometimes bioturbated, and mud-crack structures indicate frequent subaerial exposure. The occurrence of sheet flood deposits, aeolian sand-sheets and mudcracks in fine-grained sediments point to an ephemeral hydrologically-closed lake formed under arid condition (Rogers and Astin, 1991). This facies association characterizes fluvio- aeolian overbank environments. Stop 4.5 - Niedersteinbach (forest trail): Permian (‘French Lower Buntsandstein’ (‘Grès d'Annweiler’ Fm.) on Rotliegends) In this outcrop (See p. 7 for location), just at the western end of Niedersteinbach, the 'French Lower Buntsandstein' is represented by the ‘Grès d’Annweiler’. In the region of the eponyme locality, north of Wissembourg, the basal part of the formation yielded a marine malacofauna typical of the Zechstein I; thus the 'French Lower Buntsandstein' is Permian in age. The lithofacies are very similar to those of the ‘Couches intermédiaires’. Stop 4.6 - Fleckenstein Castle: ‘Grès d'Annweiler’ Fm. and Trifels facies of the ‘Grès vosgien’ Fm The lowermost fluvial conglomerate facies association is located at the base of the Lower Triassic, characterizing the ‘Conglomérat basal’ Formation. This formation, well observed on well-logs, overlies the basement and is located in the western part of the basin. It is diachronous and represents the landward equivalent of the ‘Grès vosgiens’ Formation (See stop 1.4). It corresponds to more proximal braided-river deposits, that evolve in space (laterally, i.e. eastwards) and time (vertically) into braided river of the ‘Grès vosgiens’ Formation. In this outcrops (See p. 7 for location, Fig. 48), the ‘Grès vosgiens’ Formation shows typical fluvial facies (see Stop 1.1) and in its upper part aeolian deposits (Fig. 49) well preserved between to fluvial episods (see stop 1.4 for facies description). 74
Aeolian dune (Fig. 49) 75 Figure 48: Sedimentological log of Fleckenstein Castle (after Péron, 2004).
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Pan-European correlation of the epi
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DAY 3 — THURSDAY, 05.10.2006 ....
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Excursions Tuesday, 03.10 2006 Stop
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I. - Introduction The Triassic of e
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Figure I.1: Lithostratigraphic colu
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location (Durand and Jurain, 1969;
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Figure II.4: A) Geometries and lith
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Silurian and Proterozoic graphitic
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(Durand and Jurain, 1969; Gall, 197
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sedimentary break period of by-pass
Page 23 and 24: Figure II.11: Climate simulations f
Page 25 and 26: Figure III.1: (A) E-W Muschelkalk s
Page 27 and 28: IV. The Keuper IV.1. - Geological s
Page 29 and 30: Figure IV.1: Lithostratigraphy, sed
Page 31 and 32: Figure IV.2: (A) Maps of the retrog
Page 33 and 34: Figure IV.4: (A) Maps of retrograda
Page 35 and 36: 4.2.6. Upper ‘Marnes irisées sup
Page 37: Dolomites (Aigner and Bachmann, 199
Page 40 and 41: layers, with frequent mud-cracks th
Page 42 and 43: Figure 3: (A) Early Triassic palaeo
Page 44 and 45: Landscape reconstruction for the An
Page 46 and 47: Figure 8: Correlations between Hemi
Page 48 and 49: Figure 10: Aeolian dune facies obse
Page 50 and 51: Day 2 — Wednesday, 04.10 2006 Sto
Page 52 and 53: Stop 2.2 - Relanges (quarry along D
Page 54 and 55: Stop 2.4 - Crainvilliers (gullies i
Page 56 and 57: Stop 2.6 - Poussay (D55 road cuttin
Page 58 and 59: Stop 2.8 - Xirocourt (S.R.D.E. quar
Page 60 and 61: The first one crops out in old quar
Page 62 and 63: Figure 33: Outcrop of the old gypsu
Page 64 and 65: Stop 3.6 - Saint-Avold (N3 road cut
Page 66 and 67: Stop 3.8 - Grosbliederstroff (N61 r
Page 68 and 69: Stop 4.2 - Volmunster-Lengelsheim:
Page 70 and 71: Stop 4.3 - Bitche (N62 road): Harde
Page 72 and 73: Figure 46: Sedimentary log of Bitch
Page 76 and 77: Figure 49: Detailed view of the aeo
Page 78 and 79: Dittrich D. (1989). Beckenanalyse d
Page 80: Simms M.J., Ruffell A.H. (1990). Cl
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International Field Workshop on 'The Triassic of eastern France'

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