volcanic rock in a sentence

Examples

1. The Calapooya Mountains are composed of volcanic rocks and newer sedimentary strata.
2. The source for the uranium was most likely local volcanic rock units.
3. It was volcanic rock with steep sides except for two landing places.
4. Some Rwandans are living on volcanic rock fields almost devoid of water.
5. Perlite is a volcanic rock " popped " at high temperature.
6. These volcanic rocks are of Tertiary age, and are mostly basalt.
7. Volcanic rocks of Kurile Lake range from basaltic andesite to rhyolite.
8. The cactus grows in volcanic rock on slopes, at altitudes around.
9. It also occurs in skarn, pegmatite and hydrothermally altered volcanic rocks.
10. Different kind of volcanic rocks can be found on Sharp Island.