Trachytes example sentences

"Trachytes" Example Sentences

1. The trachytes of the region are characterized by their porphyritic texture.
2. The trachytes are composed of phenocrysts of sanidine and alkali feldspar in a fine-grained matrix.
3. The trachytes are cut by numerous dikes of phonolite and basalt.
4. The trachytes are overlain by thick flows of basalt and tephrite.
5. The trachytes are often associated with extensive hydrothermal alteration zones.
6. The trachytes are intruded by a series of younger dikes and sills.
7. Trachytes are of volcanic origin and are composed mainly of alkali feldspar and quartz.
8. Trachytes are common in the volcanic fields of the western United States.
9. Trachytes are often found in association with other igneous rocks such as basalt and andesite.
10. Trachytes are relatively rare in the geologic record, but they are still found in some areas.
11. The trachytes are usually medium-grained and may contain phenocrysts of plagioclase, alkali feldspar, and quartz.
12. Trachytes are typically light-colored and may be porphyritic, containing large crystals in a finer-grained matrix.
13. Trachytes are usually composed of alkali feldspar and quartz, with minor amounts of mafic minerals.
14. Trachytes are usually associated with other volcanic rocks such as basalt, andesite, and rhyolite.
15. Trachytes are composed of alkali feldspar, quartz, and minor amounts of mafic minerals.
16. The trachytes are often porphyritic, with large crystals in a finer-grained matrix.
17. Trachytes are often light-colored and may contain phenocrysts of plagioclase, alkali feldspar, and quartz.
18. Trachytes are a type of volcanic rock that is composed mainly of alkali feldspar and quartz.
19. Trachytes are characterized by their light-colored appearance and porphyritic texture.
20. Trachytes are often intruded by younger dikes and sills, and may be associated with extensive hydrothermal alteration zones.

Common Phases

Volcanic; Igneous; Extrusive; Porphyritic; Aphanitic; Phaneritic; Glassy; Microcrystalline; Hypabyssal; Trachytic.