| 21. | The composition has been described as basalt trachyte.
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| 22. | Inarichi is the largest volcano in the Udokan plateau and includes a major trachyte caldera.
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| 23. | Commencing at this broad grassland, the Gorge narrows as the river encounters harder trachyte rock.
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| 24. | Above the cornice sits an octagonal two stepped base of trachyte surmounted by a circular step.
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| 25. | The composition of rhomb porphyry places it in the trachyte-latite classification of the QAPF diagram.
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| 26. | The museum building, built of locally quarried grey Kurla basalt and buff coloured trachyte Malad stone.
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| 27. | Constructed from pink trachyte ashlars, it is divided into two parts by a horizontal moulded cornice.
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| 28. | The falls formed when water erosion by streams created gorges through layers of basalt and resistant trachyte.
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| 29. | On one of these he discovered trachyte a volcanic rock easy to mine as a building stone.
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| 30. | Trachyte lavas completely cover the floor of the caldera, concealing the rocks of the older volcano.
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