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