It consists mainly of volcanic breccia, flows, tuff, and intercalated sedimentary rocks.
2.
Within the volcanic conduits of explosive volcanoes the volcanic breccia environment merges into the intrusive breccia environment.
3.
The surrounding rock, locally called " fta ", consists of volcanic breccia and pumice.
4.
Volcanic breccia, a conglomerate, was used for the parts of walls above a height of 7 m.
5.
In the vicinity of the Cape, there are geomorphological examples of gabbro-diorite, volcanic breccia, and granite.
6.
Malpelo Island is composed of Miocene pillow lavas, volcanic breccias, and basaltic Nazca Spreading Centre and the Gal�pagos hotspot.
7.
Agglomerates are typically found near volcanic vents and within volcanic conduits, where they may be associated with pyroclastic or intrusive volcanic breccias.
8.
A concentration of subvolcanic intrusions and coarse volcanic breccia clasts more than } } in length suggest that Devastator Peak is a major vent.
9.
The Bockberg rises immediately north of a loop in the matrix, has built a volcanic breccia here, which contains veins of hematite.
10.
At the margins of the volcanic pipe the lamproite is mixed with a volcanic breccia containing shattered wall rock fragments mixed and milled by the eruption.
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