Lastreghe stone


Lastreghe stone is extracted in one quarry in Lastreghe (Ponte nelle Alpi), on the orographic left of the Piave valley, at about 520 m above sea level. On this slope, white bioclastic limestones emerge, with the strata orientated in the direction of the slope, with same inclination more or less.




Lithostratigraphy (see Italy Geological Map, 1:50.000 scale, sheet 063 Belluno): in this particular sector of the Belluno Basin: Calcari del Fadalto Formation, followed by the Cugnan and Scaglia Rossa Formation above and by the Biancone Formation at the base (Cretaceous sup.). They have the following lithological characteristics.

Lithological characteristics
  • Formazione di Cugnan e Scaglia Rossa (Cugnan Formation and Scaglia Rossa): Paleocene – Cretaceous (Santonian – Maastrichtian); alternating light grey biocalcarenites, marl limestones and reddish clay marlstones in globoborotallides; reddish slab-shaped calcareous marlstones and marl limestones in globotroncanidides, truncarotaloidides, inocerami and ichnofossils, flint in the lower part, with calcarenites and whitish bioclastic breccias.
  • Formazione dei Calcari del Fadalto (Fadalto Limestones Formation): Cretaceous (Abian/Cenomanian – Santonian); hazel-coloured calcarenites and bioclastic breccias with fragments of rudists and caprinidae. Indistinct stratification or in meters-thick layers.
  • Biancone: Cretaceous (Tithonian p.p.– late Cretaceous): well stratified white and grey flint micrites, with sporadic interbedded graded biocalcarenites. Also rough calcarenites (local Soccher limestone).
  • In particular, in this particular sector of Belluno Basin, Lastreghe Stone consists of white and hazel-coloured calcarenites and bioclastic calcirutides, in tabular strata, from dm to 1 m thick.

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