trachyte

If so, the trachyte must be younger than the syenite.

On one of these he discovered trachyte a volcanic rock easy to mine as a building stone.

The mountain is a volcanic feature known as a trachyte plug.

The last known eruption was a trachyte flow which occurred in the early 20th century.

It is found in trachyte and similar rocks.

The valley is made up of trachyte, another igneous rock with massive texture.

The rock is trachyte and thus disproves the volcanic crater theory.

The mountain is basically a column of trachyte.

It is a massive tower built with huge regular trachyte blocks from local quarries.

On the village's outskirts is an old quarry where trachyte was once mined.

These falls are characterized by its trachyte andesite rocks.

Trachybasalt is a volcanic rock with a composition between trachyte and basalt.

Its component rock is trachyte and Lower Carboniferous in origin.

It has also been found as a coating along joint planes and fractures within a trachyte sill.

The products were dominated by viscous trachyte and rhyolite lavas.

It is a trachyte plug, in parts containing numerous inclusions of basalt.

These have altered the trachyte at their margins to various shades of brown, hence the name of the ridge.

Dykes, plugs and domes are common and mostly made from trachyte.

They are formed of trachyte, dolerite and basalt.

The church was built using slabs of red trachyte and of brighter limestone for the decorations.

In 1978 trachyte setts and ornamental iron gates were used to make an attractive entrance to the Gardens.

Lava flows of more viscous phonotephrite and trachyte erupted after the basanite.

The facade in the style is trachyte Baroque; very characteristic is the dome brick.

However, other members disagreed because the supposed crater is underlain by massive trachyte, not volcanic breccia.

The volcanic rocks of the island consist of olivine basalt and trachyte.