Facies distribution on a carbonate ramp controlled by underground relief and subsidence (Late Eocene of the eastern Alpine Foreland Basin)

 

13. Reconstruction - Stage 2

Extensive maerl-fields develop in the northern area, which continue to fill up the relief. Terrigenous influence decreases owing to the rising sea-level. Frequency of coralline detritus reflects high hydrodynamic energy. Rhodolith accumulations and a few coral biostromes occur in low-energy areas. Thin sandstone intercalations reveal that erosion of high zones is subordinate compared to stage one.

The nummulitid sandstones of the southern area grades upsection into Orthophragminid marls/limestones. The soft substrate prevents coralline algae growth in this area.

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