| 1. | The mountains consist of sedimentary layers lying upon a Ferrar Dolerite.
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| 2. | Dolerite rocks formed during the Jurassic period intrude through this base.
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| 3. | Dolerite is crushed to use as road metal, and aggregate.
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| 4. | The pebbles are mostly quartzite, but include dolerite and agate.
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| 5. | Dolerite has intruded this at Glenugie Peak, and near Banyabba.
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| 6. | In Tasmania dolerite dominates much of the landscape, particularly alpine areas.
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| 7. | Halvm�ne�ya is 12 square kilometres large and consists entirely of dolerite rock.
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| 8. | Dolerite is also a feature of the geology of the Central Plateau.
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| 9. | In the batholiths there are quartz-feldspar porphyry and dolerite dykes.
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| 10. | They intrude the Lower Parmeener Group rocks, and dolerite.
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