tufaceous

Reserves of dolomite exists in the district and tufaceous deposits are also found near several Nullahs.

It forms the rolling tufaceous plateau.

The main lower site was carved from the cliff's central stratum of tufaceous breccia at an elevation of thirteen hundred metres above sea level.

The middle portion of Barangay Milagrosa is ranging of 8-18% slope that forms the rolling tufaceous plateau.

Into its upper surface are dug several narrow channels and in front of it are the remains of a draining channel made of tufaceous slabs.

The tufaceous ground gives the Cabernet a peculiar supple trace and a sweet wrapping nuance that perfectly melts the strong personality of the Sangiovese.

Uranium was present as meta-autunite, uranophane, uraninite, and coffinite in tufaceous fluvial sandstones of the Miocene Browns Park Formation.

The rocks predominantly comprise calcareous mudstones though also include clays, shales and marls with marly, tufaceous and shelly limestones, occasional oolitic and sandy strata, and evaporites.

The town center of Zagarolo lies on a very narrow tufaceous plateau (2 kilometers long and about 100 meters wide) at an elevation of 310 meters, surrounded by two green valleys, "Valle del Formale" and "Valle della Foresta".

At the beginning of the 20th century, behind the Arch of Septimius Severus were found some ancient tufaceous foundations that probably belonged to the Volcanal and traces of a rocky platform, 3.95 meters long and 2.80 meters wide, that had been covered with concrete and painted in red.

The vast quantity of this unworked fuel would be sufficient to warm the whole population of Iceland for a century; this vast turbary measured in certain ravines had in many places a depth of seventy feet, and presented layers of carbonized remains of vegetation alternating with thinner layers of tufaceous pumice.