Andesite

intermediate in composition between andesite and rhyolite.

Tōjinbō (東尋坊) is a series of cliffs on the Sea of Japan in Japan made from columnar joints of pyroxene andesite.

The volcano has primarily erupted andesite, with small amounts of dacite and basaltic andesite.

It is composed from andesite with the exception of basaltic cones and lava flows on the eastern side.

Small explosions of gas and ash occur every 15 to 20 minutes, but larger eruptions are less frequent. Andesite and basalt lava types dominate.

There have been andesitic and dacitic Pleistocene and Holocene eruptions from vents at or near the summit.

During the late Pleistocene it produced andesite lava flows that built the Brokeoff composite volcano (stratovolcano).

Monte Pissis is a large andesitic-dacitic volcanic centre.

The magmatic composition of Isarog Volcano is primarily andesitic, with minor dacitic components.

Helens started its growth in the Pleistocene 37,600 years ago, during the Ape Canyon stage, with dacite and andesite eruptions of hot pumice and ash.

The Nevado del Tolima is a Late Pleistocene to recently active andesitic stratovolcano located in the Tolima department, Colombia.

Mountains sides have tertiary volcanic rock, mostly basalt and andesite along with pyroclastic matter and breaches.

Andesite, Basalt, Basaltic Andesite, Picro-Basalt, Dacite

Andesite