| 11. | It is mainly composed of dolerite and basaltic volcanic rocks.
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| 12. | The effects of quarrying for dolerite can be clearly seen.
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| 13. | Nearby were thousands of balls of dolerite, a stone harder than granite.
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| 14. | Cradle Mountain, another dolerite peak, for example, was a nunatak.
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| 15. | Quartz-dolerite contains many cooling fractures and weathers badly, becoming unstable.
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| 16. | For example, dolerite axes made at Plussulien have been found in Britain.
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| 17. | The crushed dolerite ( 1889 1931 ) was used as a road stone.
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| 18. | Zircon grains in the Cooee Dolerite are from mostly.
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| 19. | Dolerite ( or diabase ) and lamprophyre dykes intruded.
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| 20. | The peak is sandstone with dolerite intrusions and is a sharp summit ridge.
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