The stratified aspect of the Cima di Lanza that we can observe to the east is due to an alternation of more compact calcareous banks and less cohesive pelitic strata. These rocks were laid down between the Upper Carboniferous and Lower Permian (about 320-280 million years ago) in a period of frequent variations in the sea level, due in part to massive glaciations.

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Overview of the Pale di S. Lorenzo geological fault
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Panoramic view across the Forca di Lanza