Volcanic rock

Usage examples of tuff.

Tuff is much softer than basalt and andesite, and over the years this exposed layer has eroded away, leaving us with our wonderful hotel.

In parts of China, houses were built of bricks carved from ignimbrite quarries, but in northern Italy the opposite approach had been taken, with homes and shops being excavated within tuff deposits.

Porphyritic tuffs and massive limestone compose the western chain of the Andes above Lima, while in the Oroya Valley we find carbonaceous sandstones.

Some of the tuffs may be of the Jurassic age, though the Cretaceous period is also largely represented.

Erosion had carved the tuff wherever bracks in the andesite exposed it, forming the tunnel-bottomed ravines, and also revealing great seams of caliche, trapped between the two layers.

The road then led twenty miles across a plain littered with boulders of honey-colored tuff, toward a pair of tall volcanic necks, each growing into an ancient weathered castle, in ages past the headquarters of hermetic cults but now, according to Cauch, the abode of ghouls.

The bell tower of an old Spanish church rises up above the coconut palms not far away, carved from blocks of volcanic tuff that are beginning to glow in the lambency of another damn mind-blowing tropical sunset.

Over by the cold-ash fireplace Dorry Mears was sitting, doing nothing but tuffing up her hair.