Geometry and sedimentary structures
Clast or matrix supported textures and subangular to subrounded carbonate and siliceous cobbles to boulders. Local outsized clasts. Fine sandy or muddy matrix, the later in matrix-supported, coarsening-upwards, bodies.
Tabular bodies and rare channelled bases. Clast supported deposits with internal irregular surfaces, horizontal- bedding, and rare trough cross-bedding.
Alluvial fan-proximal sector dominated by flash floods and debris flows. During waning discharges some channels with longitudinal bars developed; overbank areas poorly preserved.
Coarse-grained with polygenic pebbles and cobbles.
Decimetric tabular or irregular bodies with trough cross-bedding and cross lamination.
Massive with disperse polygenic pebbles and cobbles.
Decimetric tabular or irregular bodies.
Conglomerate and Sandstone (CS)
Clast-supported subangular to rounded carbonate and siliceous pebbles and cobbles with fine to medium-grained sandy matrix.
Tabular or channelled bodies with horizontal and trough cross-bedding. Common fining-upwards cycles.
Alluvial fan-middle sector with channelled, sometimes unconfined flows and gravel bars. Sandstones represent deposition during waning water discharges and root traces non-sedimentation episodes.
Coarse to medium-grained sandstone with disperse pebbles and cobbles.
Decimetric-metric tabular or channelled bodies with trough cross-bedding and rare root traces and carbonate nodules.
Conglomerate and Mudstone (CM)
Clast-supported subrounded to rounded carbonate and siliceous pebbles and cobbles with fine to medium-grained sandy matrix.
Channels with gently channelled internal surfaces and trough, and less common, planar cross-bedding. Some tabular beds.
Alluvial fan-middle sector with straight multiepisodic channels commonly overflooded. Well-developed overbank areas that prevented channel migration.
Massive with rare dispersed pebbles and cobbles.
Decimetric tabular bodies with common root traces.
Medium-grained sandstones with disperse pebbles and cobbles.
Mainly decimetriic tabular bodies.
Massive or bioturbated.
Metric tabular bodies.
Alluvial fan-distal sector mudflat areas fed by unconfined water flows and episodically reached by isolated shallow channels. Near-surface water level favoured pedogenic processes and soils but local freshwater ponds also existed.
Carbonate palaeosols with prismatic and rare nodular structure. Disperse carbonate or siliceous pebbles.
Decimetric-metric tabular bodies.
Massive, bioturbated or brecciated mudstone-wackestone with common gastropods.
Decimetric tabular bodies.
Clast-supported rounded polygenic pebbles with very fine sandy matrix.
Decimetric poorly channelled or tabular bodies with occasional irregular internal surfaces.
Limestone and Marl (LM)
Massive, bioturbated or brecciated mudstone-packstone with gastropods, ostracods, charophytes and vegetal remains. Rare coal layers.
Decimetric-metric tabular, irregular or slightly lenticular bodies with occasional symmetric ripples.
Shallow lacustrine-palustrine areas with alternating episodes of carbonate precipitation and detrital deposition. Marginal exposed areas with rooted vegetation. Frequent water-level oscillations.
Massive or laminated with common gastropods and spherical carbonate nodules.
Decimetric-metric tabular or irregular bodies.
Decimetric tabular bodies.